Tlv1012-Pre Amp p Electret Mic

8/4/2019 Tlv1012-Pre Amp p Electret Mic

1/12

1 F E A T U R E S A P P L I C A T I O N S

GNDOUTPUT

INPUTGND

YDC PACKAGE

(TOP VIEW)

B2

A1

A2

B1

D E S C R I P T I O N / O R D E R I N G I N F O R M A T I O N

T L V 1 0 1 2

w w w . t i . c o m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S L C S 1 5 4 A O C T O B E R 2 0 0 8 R E V I S E D N O V E M B E R 2 0 0 8

A M P L I F I E R F O R H I G H - G A I N T W O - W I R E M I C R O P H O N E S

C e l l u l a r P h o n e s S u p p l y V o l t a g e : 2 V t o 5 V

H e a d s e t s S u p p l y C u r r e n t : < 1 8 0 A M o b i l e C o m m u n i c a t i o n s S i g n a l - t o - N o i s e R a t i o ( A - W e i g h t e d ) : 6 0 d B A u t o m o t i v e A c c e s s o r i e s O u t p u t V o l t a g e N o i s e ( A - W e i g h t e d ) : 8 9 d B V P D A s

T o t a l H a r m o n i c D i s t o r t i o n : 0 . 0 1 3 % A c c e s s o r y M i c r o p h o n e P r o d u c t s

V o l t a g e G a i n : 1 5 . 6 d B

T h e T L V 1 0 1 2 i s a n a u d i o a m p l i f i e r s e r i e s f o r s m a l l - f o r m - f a c t o r e l e c t r e t m i c r o p h o n e s . T h i s t w o - w i r e a m p l i f i e r i s d e s i g n e d t o r e p l a c e J F E T a m p l i f i e r s c u r r e n t l y i n u s e . T h e T L V 1 0 1 2 i s i d e a l l y s u i t e d f o r a p p l i c a t i o n s t h a t r e q u i r e h i g h s i g n a l i n t e g r i t y i n t h e p r e s e n c e o f a m b i e n t o r R F n o i s e , s u c h a s i n c e l l u l a r c o m m u n i c a t i o n s . T h e T L V 1 0 1 2 a u d i o a m p l i f i e r i s s p e c i f i e d f o r o p e r a t i o n o v e r a 2 . 2 - V t o 5 - V s u p p l y v o l t a g e r a n g e w i t h a f i x e d g a i n o f 1 5 . 6 d B . T h e d e v i c e o f f e r s e x c e l l e n t T H D , g a i n a c c u r a c y , a n d t e m p e r a t u r e s t a b i l i t y c o m p a r e d t o J F E T m i c r o p h o n e s .

T h e T L V 1 0 1 2 e n a b l e s a t w o - p i n e l e c t r e t m i c r o p h o n e s o l u t i o n , w h i c h p r o v i d e s d i r e c t p i n - t o - p i n c o m p a t i b i l i t y w i t h t h e e x i s t i n g J F E T m a r k e t .

T h e T L V 1 0 1 2 i s o f f e r e d i n a s p a c e - s a v i n g f o u r - t e r m i n a l u l t r a - t h i n l e a d - f r e e p a c k a g e ( Y D C ) a n d i s i d e a l l y s u i t e d f o r t h e f o r m f a c t o r o f m i n i a t u r e e l e c t r e t m i c r o p h o n e p a c k a g e s . T h e T L V 1 0 1 2 i s c h a r a c t e r i z e d f o r o p e r a t i o n o v e r a f r e e - a i r t e m p e r a t u r e r a n g e o f 4 0 C t o 8 5 C .

O R D E R I N G I N F O R M A T I O N ( 1 )

TA AV( 2 ) P A C K A G E ( 3 ) O R D E R A B L E P A R T N U M B E R T O P - S I D E M A R K I N G

N a n o S t a r W C S P 4 0 C t o 8 5 C 1 5 . 6 d B R e e l o f 3 0 0 0 T L V 1 0 1 2 - 1 5 Y D C R Y 3 8

( D S B G A ) Y D C

( 1 ) F o r t h e m o s t c u r r e n t p a c k a g e a n d o r d e r i n g i n f o r m a t i o n , s e e t h e P a c k a g e O p t i o n A d d e n d u m a t t h e e n d o f t h i s d o c u m e n t , o r s e e t h e T I w e b s i t e a t w w w . t i . c o m .

( 2 ) T y p i c a l v a l u e m e a s u r e d a t V D D = 2 . 2 V , V I N = 1 8 m V , R L = 2 . 2 k , CL = 2 . 2 F( 3 ) P a c k a g e d r a w i n g s , t h e r m a l d a t a , a n d s y m b o l i z a t i o n a r e a v a i l a b l e a t w w w . t i . c o m / p a c k a g i n g .

1

P l e a s e b e a w a r e t h a t a n i m p o r t a n t n o t i c e c o n c e r n i n g a v a i l a b i l i t y , s t a n d a r d w a r r a n t y , a n d u s e i n c r i t i c a l a p p l i c a t i o n s o f T e x a s I n s t r u m e n t s s e m i c o n d u c t o r p r o d u c t s a n d d i s c l a i m e r s t h e r e t o a p p e a r s a t t h e e n d o f t h i s d a t a s h e e t .

P R O D U C T I O N D A T A i n f o r m a t i o n i s c u r r e n t a s o f p u b l i c a t i o n d a t e . C o p y r i g h t 2 0 0 8 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d P r o d u c t s c o n f o r m t o s p e c i f i c a t i o n s p e r t h e t e r m s o f t h e T e x a s I n s t r u m e n t s s t a n d a r d w a r r a n t y . P r o d u c t i o n p r o c e s s i n g d o e s n o t

n e c e s s a r i ly i n c l u d e t e s t i n g o f a l l p a r a m e t e r s .
http://www.ti.com/packaginghttp://www.ti.com/http://focus.ti.com/docs/prod/folders/print/tlv1012.html


2/12

OUTPUT

INPUT

VCC

GND

+

+

A B S O L U T E M A X I M U M R A T I N G S ( 1 )

R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S

2 . 2 - V E L E C T R I C A L C H A R A C T E R I S T I C S

T L V 1 0 1 2

S L C S 1 5 4 A O C T O B E R 2 0 0 8 R E V I S E D N O V E M B E R 2 0 0 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . w w w . t i . c o m

F U N C T I O N A L B L O C K D I A G R A M

o v e r o p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e ( u n l e s s o t h e r w i s e n o t e d )

VC C S u p p l y v o l t a g e 0 . 3 V t o 5 . 5 V

VI N I n p u t v o l t a g e 0 . 3 V t o 0 . 3 V J A T h e r m a l i m p e d a n c e , j u n c t i o n t o f r e e a i r

( 2 ) 2 3 0 . 4 7 C / W

TA O p e r a t i n g f r e e - a i r t e m p e r a t u r e r a n g e 4 0 C t o 8 5 C

Ts t g S t o r a g e t e m p e r a t u r e r a n g e 6 5 C t o 1 5 0 C

( 1 ) S t r e s s e s b e y o n d t h o s e l i s t e d u n d e r a b s o l u t e m a x i m u m r a t i n g s m a y c a u s e p e r m a n e n t d a m a g e t o t h e d e v i c e . T h e s e a r e s t r e s s r a t i n g s o n l y , a n d f u n c t i o n a l o p e r a t i o n o f t h e d e v i c e a t t h e s e o r a n y o t h e r c o n d i t i o n s b e y o n d t h o s e i n d i c a t e d u n d e r r e c o m m e n d e d o p e r a t i n g c o n d i t i o n s i s n o t i m p l i e d . E x p o s u r e t o a b s o l u t e - m a x i m u m - r a t e d c o n d i t i o n s f o r e x t e n d e d p e r i o d s m a y a f f e c t d e v i c e r e l i a b i l i t y .

( 2 ) P a c k a g e t h e r m a l i m p e d a n c e i s c a l c u l a t e d a c c o r d i n g t o J E S D 5 1 - 5 .

M I N M A X U N I T

VC C S u p p l y v o l t a g e 2 5 V

TA O p e r a t i n g f r e e - a i r t e m p e r a t u r e 4 0 8 5 C

VC C = 2 . 2 V , V I N = 1 8 m V , R L = 2 . 2 k a n d C L = 2 . 2 F ( u n l e s s o t h e r w i s e n o t e d )

P A R A M E T E R T E S T C O N D I T I O N S T J M I N T Y P M A X U N I T

2 5 C 1 5 0 2 4 0 IC C S u p p l y c u r r e n t V I N = G N D A

F u l l r a n g e 2 8 0

S N R S i g n a l - t o - n o i s e r a t i o f = 1 k H z , V I N = 1 8 m V P P, A - w e i g h t e d 2 5 C 6 0 d B

VI N M a x i m u m i n p u t s i g n a l f = 1 k H z , T H D + N < 1 % 2 5 C 1 0 0 m V P P

2 5 C 1 . 7 0 1 . 8 7 1 . 9 4 VO U T O u t p u t v o l t a g e V I N = G N D V

F u l l r a n g e 1 . 6 3 2 . 0 0

fL O W L o w e r 3 - d B r o l l - o f f f r e q u e n c y R S O U R C E = 5 0 2 5 C 6 5 H z

fH I G H U p p e r 3 - d B r o l l - o f f f r e q u e n c y R S O U R C E = 5 0 2 5 C 9 5 k H z

VN O u t p u t n o i s e A - w e i g h t e d 2 5 C 8 9 d B V

T H D T o t a l h a r m o n i c d i s t o r t i o n f = 1 k H z , V I N = 1 8 m V P P 2 5 C 0 . 0 1 3 %

CI N I n p u t c a p a c i t a n c e 2 5 C 2 p F

ZI N I n p u t i m p e d a n c e 2 5 C > 1 0 0 0 G

2 5 C 1 4 . 0 1 5 . 6 1 6 . 9 AV G a i n f = 1 k H z , R S O U R C E = 5 0 d B

F u l l r a n g e 1 3 . 1 1 7 . 5

2 S u b m i t D o c u m e n t a t i o n F e e d b a c k C o p y r i g h t 2 0 0 8 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d

P r o d u c t F o l d e r L i n k ( s ) : T L V 1 0 1 2
http://focus.ti.com/docs/prod/folders/print/tlv1012.htmlhttp://www.go-dsp.com/forms/techdoc/doc_feedback.htm?litnum=SLCS154A&partnum=TLV1012http://focus.ti.com/docs/prod/folders/print/tlv1012.html


3/12

5 - V E L E C T R I C A L C H A R A C T E R I S T I C S

T L V 1 0 1 2


VC C = 5 V , V I N = 1 8 m V , R L = 2 . 2 k a n d C L = 2 . 2 F ( u n l e s s o t h e r w i s e n o t e d )

P A R A M E T E R T E S T C O N D I T I O N S T J M I N T Y P M A X U N I T

2 5 C 1 6 0 3 0 0 IC C S u p p l y c u r r e n t V I N = G N D A

F u l l r a n g e 3 2 5

S N R S i g n a l - t o - n o i s e r a t i o f = 1 k H z , V I N = 1 8 m V P P, A - w e i g h t e d 2 5 C 6 0 d B VI N M a x i m u m i n p u t s i g n a l f = 1 k H z , T H D + N < 1 % 2 5 C 1 0 0 m V P P

2 5 C 4 . 3 4 4 . 5 6 4 . 7 4 VO U T O u t p u t v o l t a g e V I N = G N D V

F u l l r a n g e 4 . 2 8 4 . 8 0

fL O W L o w e r 3 - d B r o l l - o f f f r e q u e n c y R S O U R C E = 5 0 2 5 C 6 7 H z

fH I G H U p p e r 3 - d B r o l l - o f f f r e q u e n c y R S O U R C E = 5 0 2 5 C 1 5 0 k H z

VN O u t p u t n o i s e A - w e i g h t e d 2 5 C 8 9 d B V

T H D T o t a l h a r m o n i c d i s t o r t i o n f = 1 k H z , V I N = 1 8 m V P P 2 5 C 0 . 0 1 3 %

CI N I n p u t c a p a c i t a n c e 2 5 C 2 p F

ZI N I n p u t i m p e d a n c e 2 5 C > 1 0 0 0 G

2 5 C 1 4 . 0 1 5 . 6 1 6 . 9 AV G a i n f = 1 k H z , R S O U R C E = 5 0 d B

F u l l r a n g e 1 3 . 1 1 7 . 5

C o p y r i g h t 2 0 0 8 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d S u b m i t D o c u m e n t a t i o n F e e d b a c k 3



4/12

T Y P I C A L C H A R A C T E R I S T I C S

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

Frequency Hz

GaindB

-180

-135

-90

-45

0

45

90

135

180

Phase

10 100 1k 10k 100k 1M0

0.1

0.2

0.3

0.4

0.5

0.6

10 100 1,000 10,000 100,00

Frequency Hz

THD+N%

VS = 2.2 V

VIN = 18 mVpp

10 100 1k 10k 100k

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

0 20 40 60 80 100 120

Input Amplitude mVpp

THD+N%

VCC = 5 V

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

0 20 40 60 80 100 120

Input Amplitude mVpp

THD+N%

VCC = 2.2 V

T L V 1 0 1 2


C L O S E D L O O P G A I N A N D P H A S E T O T A L H A R M O N I C D I S T O R T I O N + N O I S E v s v s

F R E Q U E N C Y F R E Q U E N C Y

T O T A L H A R M O N I C D I S T O R T I O N + N O I S E T O T A L H A R M O N I C D I S T O R T I O N + N O I S E v s v s

I N P U T V O L T A G E I N P U T V O L T A G E

F i g u r e 1 .




5/12

-150

-140

-130

-120

-110

-100

-90

-80

10 100 1,000 10,000 100,00

Frequency Hz

OutputVoltageNoisedBV/rtHz

10 100 1k 10k 100k

T L V 1 0 1 2


T Y P I C A L C H A R A C T E R I S T I C S ( c o n t i n u e d )

O U T P U T V O L T A G E N O I S E v s

F R E Q U E N C Y




6/12

A P P L I C A T I O N I N F O R M A T I O N

H i g h G a i n

B u i l t - I n G a i n

TLV1012

Airgap

Diaphragm

Electret

ConnectorBackplate

A - W e i g h t e d F i l t e r

-70

-60

-50

-40

-30

-20

-10

0

10

10 100 1000 10000 100000

Frequency Hz

FilterdBV

T L V 1 0 1 2


T h e T L V 1 0 1 2 p r o v i d e s o u t s t a n d i n g g a i n c o m p a r e d t o J F E T a m p l i f i e r s a n d s t i l l m a i n t a i n s t h e s a m e e a s e o f i m p l e m e n t a t i o n , w i t h i m p r o v e d g a i n , l i n e a r i t y , a n d t e m p e r a t u r e s t a b i l i t y . A h i g h g a i n e l i m i n a t e s t h e n e e d f o r e x t r a e x t e r n a l c o m p o n e n t s .

T h e T L V 1 0 1 2 i s o f f e r e d i n t h e s p a c e - s a v i n g Y D C p a c k a g e , w h i c h f i t s p e r f e c t l y i n t o t h e m e t a l c a n o f a m i c r o p h o n e . T h i s a l l o w s t h e T L V 1 0 1 2 t o b e p l a c e d o n t h e P C B i n s i d e t h e m i c r o p h o n e .

T h e b o t t o m s i d e o f t h e P C B u s u a l l y s h o w s a b u l l ' s - e y e p a t t e r n , w h e r e t h e o u t e r r i n g , w h i c h i s s h o r t e d t o t h e m e t a l c a n , s h o u l d b e c o n n e c t e d t o t h e g r o u n d . T h e c e n t e r d o t o n t h e P C B i s c o n n e c t e d t o t h e V C C t h r o u g h a r e s i s t o r . T h i s p h a n t o m b i a s i n g a l l o w s b o t h s u p p l y v o l t a g e a n d o u t p u t s i g n a l o n o n e c o n n e c t i o n .

F i g u r e 2 . B u i l t - I n G a i n

T h e h u m a n e a r h a s a f r e q u e n c y r a n g e f r o m 2 0 H z t o a b o u t 2 0 k H z . W i t h i n t h i s r a n g e t h e s e n s i t i v i t y o f t h e h u m a n e a r i s n o t e q u a l f o r e a c h f r e q u e n c y . T o a p p r o a c h t h e h e a r i n g r e s p o n s e , w e i g h t i n g f i l t e r s a r e i n t r o d u c e d . O n e o f t h o s e f i l t e r s i s t h e A - w e i g h t e d f i l t e r .

T h e A - w e i g h t e d f i l t e r i s u s u a l l y u s e d i n s i g n a l - t o - n o i s e r a t i o m e a s u r e m e n t s , w h e r e s o u n d i s c o m p a r e d t o d e v i c e n o i s e . I t i m p r o v e s t h e c o r r e l a t i o n o f t h e m e a s u r e d d a t a t o t h e s i g n a l - t o - n o i s e r a t i o p e r c e i v e d b y t h e h u m a n e a r .

F i g u r e 3 . A - W e i g h t e d F i l t e r




7/12

M e a s u r i n g N o i s e a n d S N R

5 pF A-Weighted

Filter

S o u n d P r e s s u r e L e v e l

Absolute

SoundPressure(dBPa)

94 dBSensitivity(dBV/Pa)

SoundPressure(dBSPL)

Voltage(dBV)

T L V 1 0 1 2


T h e o v e r a l l n o i s e o f t h e T L V 1 0 1 2 i s m e a s u r e d w i t h i n t h e f r e q u e n c y b a n d f r o m 1 0 H z t o 2 2 k H z u s i n g a n A - w e i g h t e d f i l t e r . T h e i n p u t o f t h e T L V 1 0 1 2 i s c o n n e c t e d t o g r o u n d w i t h a 5 - p F c a p a c i t o r .

F i g u r e 4 . N o i s e M e a s u r e m e n t

T h e s i g n a l - t o - n o i s e r a t i o ( S N R ) i s m e a s u r e d w i t h a 1 k H z i n p u t s i g n a l o f 1 8 m V P P u s i n g a n A - w e i g h t e d f i l t e r . T h i s r e p r e s e n t s a s o u n d p r e s s u r e l e v e l o f 9 4 d B S P L . N o i n p u t c a p a c i t o r i s c o n n e c t e d .

T h e v o l u m e o f s o u n d a p p l i e d t o a m i c r o p h o n e i s u s u a l l y s t a t e d a s t h e p r e s s u r e l e v e l w i t h r e s p e c t t o t h e t h r e s h o l d o f h e a r i n g o f t h e h u m a n e a r . T h e s o u n d p r e s s u r e l e v e l i n d e c i b e l s i s d e f i n e d b y :

S o u n d p r e s s u r e l e v e l ( d B ) = 2 0 l o g P m / PO

W h e r e P m i s t h e m e a s u r e d s o u n d p r e s s u r e , a n d P O i s t h e t h r e s h o l d o f h e a r i n g ( 2 0 P a ) .

T o c a l c u l a t e t h e r e s u l t i n g o u t p u t v o l t a g e o f t h e m i c r o p h o n e f o r a g i v e n s o u n d p r e s s u r e l e v e l , t h e s o u n d p r e s s u r e i n d B S P L n e e d s t o b e c o n v e r t e d t o t h e a b s o l u t e s o u n d p r e s s u r e i n d B P a . T h i s i s t h e s o u n d p r e s s u r e l e v e l i n d e c i b e l s , w h i c h i s r e f e r r e d t o a s 1 P a s c a l ( P a ) .

T h e c o n v e r s i o n i s g i v e n b y :

d B P a = d B S P L + 2 0 l o g 2 0 P a

d B P a = d B S P L 9 4 d B

T r a n s l a t i o n f r o m a b s o l u t e s o u n d p r e s s u r e l e v e l t o a v o l t a g e i s s p e c i f i e d b y t h e s e n s i t i v i t y o f t h e m i c r o p h o n e . A c o n v e n t i o n a l m i c r o p h o n e h a s a s e n s i t i v i t y o f 4 4 d B V / P a .

F i g u r e 5 . d B S P L t o d B V C o n v e r s i o n

F o r e x a m p l e , b u s y t r a f f i c i s 7 0 d B S P L :

VO U T = 7 0 9 4 4 4 = 6 8 d B V

T h i s i s e q u i v a l e n t t o 1 . 1 3 m V P P.

B e c a u s e t h e T L V 1 0 1 2 - 1 5 h a s a g a i n o f 6 ( 1 5 . 6 d B ) o v e r t h e J F E T , t h e o u t p u t v o l t a g e o f t h e m i c r o p h o n e i s 6 . 7 8 m V P P. B y r e p l a c i n g t h e J F E T w i t h t h e T L V 1 0 1 2 - 1 5 , t h e s e n s i t i v i t y o f t h e m i c r o p h o n e i s 2 8 . 4 d B V / P a ( 4 4 + 1 5 . 6 ) .




8/12

L o w - F r e q u e n c y C u t - O f f F i l t e r

-30

-25

-20

-15

-10

-5

0

5

10

15

20

25

30

Frequency Hz

GaindB

-180

-135

-90

-45

0

45

90

135

180

Phase

10 100 1k 10k 100k 1M

T L V 1 0 1 2


T o r e d u c e n o i s e o n t h e o u t p u t o f t h e m i c r o p h o n e , a l o w - c u t f i l t e r i s i m p l e m e n t e d i n t h e T L V 1 0 1 2 . T h i s f i l t e r r e d u c e s t h e e f f e c t o f w i n d a n d h a n d l i n g n o i s e .

I t i s a l s o h e l p f u l t o r e d u c e t h e p r o x i m i t y e f f e c t i n d i r e c t i o n a l m i c r o p h o n e s . T h i s e f f e c t o c c u r s w h e n t h e s o u n d s o u r c e i s v e r y c l o s e t o t h e m i c r o p h o n e . T h e l o w e r f r e q u e n c i e s a r e a m p l i f i e d , w h i c h g i v e s a b a s s s o u n d . T h i s

a m p l i f i c a t i o n c a n c a u s e a n o v e r l o a d , w h i c h r e s u l t s i n a d i s t o r t i o n o f t h e s i g n a l .

F i g u r e 6 . G a i n a n d P h a s e v s F r e q u e n c y

T h e T L V 1 0 1 2 i s o p t i m i z e d t o b e u s e d i n a u d i o - b a n d a p p l i c a t i o n s . T h e T L V 1 0 1 2 p r o v i d e s a f l a t g a i n r e s p o n s e

w i t h i n t h e a u d i o b a n d a n d o f f e r s l i n e a r i t y a n d e x c e l l e n t t e m p e r a t u r e s t a b i l i t y .




9/12

N o i s e

VCC

Output

Input

10 pF 33 pF

T L V 1 0 1 2


N o i s e p i c k - u p b y a m i c r o p h o n e i n c e l l p h o n e s i s a w e l l k n o w n p r o b l e m . A c o n v e n t i o n a l J F E T c i r c u i t i s s e n s i t i v e f o r n o i s e p i c k - u p b e c a u s e o f i t s h i g h o u t p u t i m p e d a n c e , w h i c h i s u s u a l l y a r o u n d 2 . 2 k .

R F n o i s e i s a m o n g o t h e r n o i s e s c a u s e d b y n o n l i n e a r b e h a v i o r . T h e n o n l i n e a r b e h a v i o r o f t h e a m p l i f i e r a t h i g h f r e q u e n c i e s , w e l l a b o v e t h e u s a b l e b a n d w i d t h o f t h e d e v i c e , c a u s e s A M d e m o d u l a t i o n o f h i g h - f r e q u e n c y s i g n a l s .

T h e A M m o d u l a t i o n c o n t a i n e d i n s u c h s i g n a l s f o l d s b a c k i n t o t h e a u d i o b a n d , t h e r e b y d i s t u r b i n g t h e i n t e n d e d m i c r o p h o n e s i g n a l . T h e G S M s i g n a l o f a c e l l p h o n e i s s u c h a n A M - m o d u l a t e d s i g n a l . T h e m o d u l a t i o n f r e q u e n c y o f 2 1 6 H z a n d i t s h a r m o n i c s c a n b e o b s e r v e d i n t h e a u d i o b a n d . T h i s k i n d o f n o i s e i s c a l l e d b u m b l e b e e n o i s e .

R F n o i s e c a u s e d b y a G S M s i g n a l c a n b e r e d u c e d b y c o n n e c t i n g t w o e x t e r n a l c a p a c i t o r s t o g r o u n d ( s e e F i g u r e 7 ) . O n e c a p a c i t o r r e d u c e s t h e n o i s e c a u s e d b y t h e 9 0 0 - M H z c a r r i e r , a n d t h e o t h e r r e d u c e s t h e n o i s e c a u s e d b y 1 8 0 0 / 1 9 0 0 M H z .

F i g u r e 7 . R F N o i s e R e d u c t i o n




10/12

PACKAGING INFORMATION

Orderable Device Status (1) PackageType

PackageDrawing

Pins PackageQty

Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)

TLV1012-15YDCR ACTIVE DSBGA YDC 4 3000 Green (RoHS &

no Sb/Br)

SNAGCU Level-1-260C-UNLIM

(1) The marketing status values are defined as follows:ACTIVE: Product device recommended for new designs.LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part ina new design.PREVIEW: Device has been announced but is not in production. Samples may or may not be available.OBSOLETE: TI has discontinued the production of the device.

(2)Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.TBD: The Pb-Free/Green conversion plan has not been defined.Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirementsfor all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be solderedat high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die andpackage, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHScompatible) as defined above.Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flameretardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it isprovided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to theaccuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to takereasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis onincoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limitedinformation may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TIto Customer on an annual basis.

PACKAGE OPTION ADDENDUM

www.ti.com 24-Oct-2008

Addendum-Page 1
http://www.ti.com/productcontenthttp://www.ti.com/productcontent


11/12


12/12

I M P O R T A N T N O T I C E

T e x a s I n s t r u m e n t s I n c o r p o r a t e d a n d i t s s u b s i d i a r i e s ( T I ) r e s e r v e t h e r i g h t t o m a k e c o r r e c t i o n s , m o d i f i c a t i o n s , e n h a n c e m e n t s , i m p r o v e m e n t s , a n d o t h e r c h a n g e s t o i t s p r o d u c t s a n d s e r v i c e s a t a n y t i m e a n d t o d i s c o n t i n u e a n y p r o d u c t o r s e r v i c e w i t h o u t n o t i c e . C u s t o m e r s s h o u l do b t a i n t h e l a t e s t r e l e v a n t i n f o r m a t i o n b e f o r e p l a c i n g o r d e r s a n d s h o u l d v e r i f y t h a t s u c h i n f o r m a t i o n i s c u r r e n t a n d c o m p l e t e . A l l p r o d u c t s a r e s o l d s u b j e c t t o T I s t e r m s a n d c o n d i t i o n s o f s a l e s u p p l i e d a t t h e t i m e o f o r d e r a c k n o w l e d g m e n t .

T I w a r r a n t s p e r f o r m a n c e o f i t s h a r d w a r e p r o d u c t s t o t h e s p e c i f i c a t i o n s a p p l i c a b l e a t t h e t i m e o f s a l e i n a c c o r d a n c e w i t h T I s s t a n d a r d

w a r r a n t y . T e s t i n g a n d o t h e r q u a l i t y c o n t r o l t e c h n i q u e s a r e u s e d t o t h e e x t e n t T I d e e m s n e c e s s a r y t o s u p p o r t t h i s w a r r a n t y . E x c e p t w h e r e m a n d a t e d b y g o v e r n m e n t r e q u i r e m e n t s , t e s t i n g o f a l l p a r a m e t e r s o f e a c h p r o d u c t i s n o t n e c e s s a r i l y p e r f o r m e d .

T I a s s u m e s n o l i a b i l i t y f o r a p p l i c a t i o n s a s s i s t a n c e o r c u s t o m e r p r o d u c t d e s i g n . C u s t o m e r s a r e r e s p o n s i b l e f o r t h e i r p r o d u c t s a n d a p p l i c a t i o n s u s i n g T I c o m p o n e n t s . T o m i n i m i z e t h e r i s k s a s s o c i a t e d w i t h c u s t o m e r p r o d u c t s a n d a p p l i c a t i o n s , c u s t o m e r s s h o u l d p r o v i d e a d e q u a t e d e s i g n a n d o p e r a t i n g s a f e g u a r d s .

T I d o e s n o t w a r r a n t o r r e p r e s e n t t h a t a n y l i c e n s e , e i t h e r e x p r e s s o r i m p l i e d , i s g r a n t e d u n d e r a n y T I p a t e n t r i g h t , c o p y r i g h t , m a s k w o r k r i g h t , o r o t h e r T I i n t e l l e c t u a l p r o p e r t y r i g h t r e l a t i n g t o a n y c o m b i n a t i o n , m a c h i n e , o r p r o c e s s i n w h i c h T I p r o d u c t s o r s e r v i c e s a r e u s e d . I n f o r m a t i o np u b l i s h e d b y T I r e g a r d i n g t h i r d - p a r t y p r o d u c t s o r s e r v i c e s d o e s n o t c o n s t i t u t e a l i c e n s e f r o m T I t o u s e s u c h p r o d u c t s o r s e r v i c e s o r a w a r r a n t y o r e n d o r s e m e n t t h e r e o f . U s e o f s u c h i n f o r m a t i o n m a y r e q u i r e a l i c e n s e f r o m a t h i r d p a r t y u n d e r t h e p a t e n t s o r o t h e r i n t e l l e c t u a l p r o p e r t y o f t h e t h i r d p a r t y , o r a l i c e n s e f r o m T I u n d e r t h e p a t e n t s o r o t h e r i n t e l l e c t u a l p r o p e r t y o f T I .

R e p r o d u c t i o n o f T I i n f o r m a t i o n i n T I d a t a b o o k s o r d a t a s h e e t s i s p e r m i s s i b l e o n l y i f r e p r o d u c t i o n i s w i t h o u t a l t e r a t i o n a n d i s a c c o m p a n i e d b y a l l a s s o c i a t e d w a r r a n t i e s , c o n d i t i o n s , l i m i t a t i o n s , a n d n o t i c e s . R e p r o d u c t i o n o f t h i s i n f o r m a t i o n w i t h a l t e r a t i o n i s a n u n f a i r a n d d e c e p t i v e b u s i n e s s p r a c t i c e . T I i s n o t r e s p o n s i b l e o r l i a b l e f o r s u c h a l t e r e d d o c u m e n t a t i o n . I n f o r m a t i o n o f t h i r d p a r t i e s m a y b e s u b j e c t t o a d d i t i o n a l r e s t r i c t i o n s .

R e s a l e o f T I p r o d u c t s o r s e r v i c e s w i t h s t a t e m e n t s d i f f e r e n t f r o m o r b e y o n d t h e p a r a m e t e r s s t a t e d b y T I f o r t h a t p r o d u c t o r s e r v i c e v o i d s a l l

e x p r e s s a n d a n y i m p l i e d w a r r a n t i e s f o r t h e a s s o c i a t e d T I p r o d u c t o r s e r v i c e a n d i s a n u n f a i r a n d d e c e p t i v e b u s i n e s s p r a c t i c e . T I i s n o t r e s p o n s i b l e o r l i a b l e f o r a n y s u c h s t a t e m e n t s .

T I p r o d u c t s a r e n o t a u t h o r i z e d f o r u s e i n s a f e t y - c r i t i c a l a p p l i c a t i o n s ( s u c h a s l i f e s u p p o r t ) w h e r e a f a i l u r e o f t h e T I p r o d u c t w o u l d r e a s o n a b l y b e e x p e c t e d t o c a u s e s e v e r e p e r s o n a l i n j u r y o r d e a t h , u n l e s s o f f i c e r s o f t h e p a r t i e s h a v e e x e c u t e d a n a g r e e m e n t s p e c i f i c a l l y g o v e r n i n g s u c h u s e . B u y e r s r e p r e s e n t t h a t t h e y h a v e a l l n e c e s s a r y e x p e r t i s e i n t h e s a f e t y a n d r e g u l a t o r y r a m i f i c a t i o n s o f t h e i r a p p l i c a t i o n s , a n d a c k n o w l e d g e a n d a g r e e t h a t t h e y a r e s o l e l y r e s p o n s i b l e f o r a l l l e g a l , r e g u l a t o r y a n d s a f e t y - r e l a t e d r e q u i r e m e n t s c o n c e r n i n g t h e i r p r o d u c t s a n d a n y u s e o f T I p r o d u c t s i n s u c h s a f e t y - c r i t i c a l a p p l i c a t i o n s , n o t w i t h s t a n d i n g a n y a p p l i c a t i o n s - r e l a t e d i n f o r m a t i o n o r s u p p o r t t h a t m a y b e p r o v i d e d b y T I . F u r t h e r , B u y e r s m u s t f u l l y i n d e m n i f y T I a n d i t s r e p r e s e n t a t i v e s a g a i n s t a n y d a m a g e s a r i s i n g o u t o f t h e u s e o f T I p r o d u c t s i n s u c h s a f e t y - c r i t i c a l a p p l i c a t i o n s .

T I p r o d u c t s a r e n e i t h e r d e s i g n e d n o r i n t e n d e d f o r u s e i n m i l i t a r y / a e r o s p a c e a p p l i c a t i o n s o r e n v i r o n m e n t s u n l e s s t h e T I p r o d u c t s a r e s p e c i f i c a l l y d e s i g n a t e d b y T I a s m i l i t a r y - g r a d e o r " e n h a n c e d p l a s t i c . " O n l y p r o d u c t s d e s i g n a t e d b y T I a s m i l i t a r y - g r a d e m e e t m i l i t a r y s p e c i f i c a t i o n s . B u y e r s a c k n o w l e d g e a n d a g r e e t h a t a n y s u c h u s e o f T I p r o d u c t s w h i c h T I h a s n o t d e s i g n a t e d a s m i l i t a r y - g r a d e i s s o l e l y a t t h e B u y e r ' s r i s k , a n d t h a t t h e y a r e s o l e l y r e s p o n s i b l e f o r c o m p l i a n c e w i t h a l l l e g a l a n d r e g u l a t o r y r e q u i r e m e n t s i n c o n n e c t i o n w i t h s u c h u s e .

T I p r o d u c t s a r e n e i t h e r d e s i g n e d n o r i n t e n d e d f o r u s e i n a u t o m o t i v e a p p l i c a t i o n s o r e n v i r o n m e n t s u n l e s s t h e s p e c i f i c T I p r o d u c t s a r e d e s i g n a t e d b y T I a s c o m p l i a n t w i t h I S O / T S 1 6 9 4 9 r e q u i r e m e n t s . B u y e r s a c k n o w l e d g e a n d a g r e e t h a t , i f t h e y u s e a n y n o n - d e s i g n a t e d p r o d u c t s i n a u t o m o t i v e a p p l i c a t i o n s , T I w i l l n o t b e r e s p o n s i b l e f o r a n y f a i l u r e t o m e e t s u c h r e q u i r e m e n t s .

F o l l o w i n g a r e U R L s w h e r e y o u c a n o b t a i n i n f o r m a t i o n o n o t h e r T e x a s I n s t r u m e n t s p r o d u c t s a n d a p p l i c a t i o n s o l u t i o n s :

P r o d u c t s A p p l i c a t i o n s A m p l i f i e r s a m p l i f i e r . t i . c o m A u d i o w w w . t i . c o m / a u d i o D a t a C o n v e r t e r s d a t a c o n v e r t e r . t i . c o m A u t o m o t i v e w w w . t i . c o m / a u t o m o t i v e D S P d s p . t i . c o m B r o a d b a n d w w w . t i . c o m / b r o a d b a n d C l o c k s a n d T i m e r s w w w . t i . c o m / c l o c k s D i g i t a l C o n t r o l w w w . t i . c o m / d i g i t a l c o n t r o l I n t e r f a c e i n t e r f a c e . t i . c o m M e d i c a l w w w . t i . c o m / m e d i c a l L o g i c l o g i c . t i . c o m M i l i t a r y w w w . t i . c o m / m i l i t a r y P o w e r M g m t p o w e r . t i . c o m O p t i c a l N e t w o r k i n g w w w . t i . c o m / o p t i c a l n e t w o r k M i c r o c o n t r o l l e r s m i c r o c o n t r o l l e r . t i . c o m S e c u r i t y w w w . t i . c o m / s e c u r i t y R F I D w w w . t i - r f i d . c o m T e l e p h o n y w w w . t i . c o m / t e l e p h o n y R F / I F a n d Z i g B e e S o l u t i o n s w w w . t i . c o m / l p r f V i d e o & I m a g i n g w w w . t i . c o m / v i d e o

W i r e l e s s w w w . t i . c o m / w i r e l e s s

M a i l i n g A d d r e s s : T e x a s I n s t r u m e n t s , P o s t O f f i c e B o x 6 5 5 3 0 3 , D a l l a s , T e x a s 7 5 2 6 5 C o p y r i g h t 2 0 0 8 , T e x a s I n s t r u m e n t s I n c o r p o r a t e d
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