SGM4917 80mW, Capless, Stereo Headphone Amplifier with ...cn.sg-micro.com/uploads/soft/20191119/1574130682.pdf · 80mW, Capless, Stereo Headphone Amplifier with Shutdown SG Micro

SGM4917

80mW, Capless, Stereo Headphone Amplifier with Shutdown

JULY 2017 –REV. A. 3 SG Micro Corp

www.sg-micro.com

GENERAL DESCRIPTION

The SGM4917 stereo headphone amplifier is designed for portable equipment where board space is at a premium. The SGM4917 uses capless architecture to produce a ground-referenced output from a single power supply, eliminating the need for large DC-blocking capacitors for output, saving cost, board space, and component height. Additionally, for SGM4917B, the gain is set internally (-2V/V), further reducing component count. For SGM4917A, the gain can be adjusted by external feedback resistors.

The SGM4917 delivers up to 80mW per channel into a 32Ω load and has low 0.02% THD+N. A -78dB power supply rejection ratio (PSRR) at 217Hz allows this device to operate from noisy digital supplies without an additional linear regulator. Comprehensive click-and- pop circuitry suppresses audible clicks and pops on startup and shutdown.

The SGM4917 operates from a single 2.7V to 5.5V supply, consumes only 2.7mA supply current, and is specified over the extended -40 to +85 temperature range. The SGM4917 is available in a Green TQFN-3×3-16L package.

FEATURES • SGM4917A: External Feedback Gain Network

SGM4917B: Fixed -2V/V Gain • No Bulky DC-Blocking Capacitors Required • Ground-Referenced Outputs Eliminate DC-Bias

Voltage on Headphone Ground Pin • No Degradation of Low-Frequency Response

Due to Output Capacitors • Differential Inputs for Enhanced Noise Cancellation • 80mW into 32Ω Load from 5V Power Supply at

THD+N = 0.1% (TYP, per Channel) • Low 0.02% THD+N • High PSRR (-78dB at 217Hz) • Integrated Click-and-Pop Suppression • 2.7V to 5.5V Single Supply Operation • Low Quiescent Current (2.7mA at VDD = 5V) • Shutdown Control • Under-Voltage Lockout Function • -40 to +85 Operating Temperature Range • Available in a Green TQFN-3×3-16L Package

APPLICATIONS Notebook PCs Cellular Phones PDAs MP3 Players Smart Phones Portable Audio Equipment

80mW, Capless, Stereo Headphone SGM4917 Amplifier with Shutdown

2 JULY 2017 SG Micro Corp

www.sg-micro.com

PACKAGE/ORDERING INFORMATION

MODEL GAIN (V/V)

PACKAGE DESCRIPTION

SPECIFIED TEMPERATURE

RANGE ORDERING NUMBER

PACKAGE MARKING

PACKING OPTION

SGM4917A ADJ TQFN-3×3-16L -40 to +85 SGM4917AYTQ16G/TR 4917AQ XXXXX Tape and Reel, 3000

SGM4917B -2 TQFN-3×3-16L -40 to +85 SGM4917BYTQ16G/TR 4917BQ XXXXX Tape and Reel, 3000

MARKING INFORMATION NOTE: XXXXX = Date Code and Vendor Code.

Date Code - WeekVendor Code

Date Code - Year

X XXX X

Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly.

ABSOLUTE MAXIMUM RATINGS PVSS to SVSS................................................... -0.3V to +0.3V PGND to SGND .............................................. -0.3V to +0.3V PVDD to SVDD .................................................. -0.3V to +0.3V PVDD and SVDD to PGND or SGND ................... -0.3V to +6V PVSS and SVSS to PGND or SGND .................... -6V to +0.3V IN to SGND ............................ (SVSS - 0.3V) to (SVDD + 0.3V) SHDN to SGND ................................ -0.3V to (SVDD + 0.3V) OUT to SGND ........................ (SVSS - 0.3V) to (SVDD + 0.3V) C1P to PGND .................................... -0.3V to (PVDD + 0.3V) C1N to PGND ................................... (PVSS - 0.3V) to + 0.3V Output Short Circuit to GND or VDD ..................... Continuous Junction Temperature ................................................ +150 Storage Temperature Range ....................... -65 to +150 Lead Temperature (Soldering, 10s) ........................... +260 ESD Susceptibility HBM ............................................................................ 2000V HBM (Output pins to Supply and Ground pins) ........... 4000V MM ................................................................................ 150V RECOMMENDED OPERATING CONDITIONS Supply Voltage Range ....................................... 2.7V to 5.5V Operating Temperature Range ...................... -40 to +85

OVERSTRESS CAUTION Stresses beyond those listed in Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Functional operation of the device at any conditions beyond those indicated in the Recommended Operating Conditions section is not implied. ESD SENSITIVITY CAUTION This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. DISCLAIMER SG Micro Corp reserves the right to make any change in circuit design, or specifications without prior notice.



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PIN CONFIGURATION (TOP VIEW)

OUTR

SVDD

OUTL

INL-

SVSS

INL+

PVSS

C1N

PGND

C1P

INR

+

SGN

D

INR

-

PVDD

TQFN-3×3-16L

SVD

D

SHD

N9

12

11

10

5 6 7 8

16 15 14 13

4

1

2

3

PIN DESCRIPTION

PIN NAME DESCRIPTION

1 PVDD Charge-Pump Power Supply. Powers charge-pump inverter, charge-pump logic, and oscillator. Connect to positive supply (2.7V to 5.5V). Bypass with a 1µF capacitor to PGND as close to the pin as possible.

2 C1P Flying Capacitor Positive Terminal.

3 PGND Power Ground. Connect to ground.

4 C1N Flying Capacitor Negative Terminal.

5 PVSS Charge-Pump Output. Connect to SVSS.

6 SGND Signal Ground. Connect to ground.

7 INR+ Noninverting Right-Channel Audio Input.

8 INR- Inverting Right-Channel Audio Input.

9,13 SVDD Amplifier Positive Power Supply. Connect to positive supply (2.7V to 5.5V). Bypass with a 1µF capacitor to SGND as close to the pin as possible.

10 OUTR Right-Channel Output.

11 SVSS Amplifier Negative Power Supply. Connect to PVSS.

12 OUTL Left-Channel Output.

14 INL- Inverting Left-Channel Audio Input.

15 INL+ Noninverting Left-Channel Audio Input.

16 SHDN Active-Low Shutdown Input. Exposed Paddle ‒ Exposed Paddle. Can be connected to GND or left floating.



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ELECTRICAL CHARACTERISTICS (PVDD = SVDD = 5V, PGND = SGND = 0V, SHDN = SVDD, C1 = C2 = 1µF, RL = ∞, resistive load referenced to ground; for SGM4917A, gain = -1V/V (RIN = RF = 10kΩ); for SGM4917B, gain = -2V/V (internally set). TA = +25, unless otherwise noted.) (1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

General

Supply Voltage Range VDD 2.7 5.5 V

Quiescent Supply Current IDD 2.7 3.7 mA

Shutdown Supply Current ISHDN SHDN = SGND = PGND 0.01 8 µA

SHDN Input Logic High VIH 1.2 V

SHDN Input Logic Low VIL 0.4 V

SHDN to Full Operation Time tSON 3.2 ms

Amplifiers

Voltage Gain AV SGM4917B -2.12 -2 -1.88 V/V

Gain Matching ΔAV SGM4917B, between the right and left channels 0.2 %

Output Offset Voltage VOS Between IN+ and IN-, input AC-coupled to ground (SGM4917A) -5.5 1.1 5.5 mV

Input Impedance RIN SGM4917B, measured at INL and INR 12.5 14.6 17 kΩ

Common Mode Rejection Ratio CMRR Input referred, SGM4917A -70 dB

Power Supply Rejection Ratio PSRR f = 217Hz, VRIPPLE = 200mVP-P -78

dB f = 10kHz, VRIPPLE = 200mVP-P -70

Output Power POUT RL = 32Ω, THD+N = 0.1% 80 mW

Output Impedance in Shutdown 2 kΩ

Total Harmonic Distortion Plus Noise THD+N RL = 32Ω, POUT = 55mW, f = 1kHz 0.02 %

Signal-to-Noise Ratio SNR RL = 32Ω, POUT = 20mW, BW < 20kHz 100 dB

Capacitive Drive CL No sustained oscillation 200 pF

Charge-Pump Oscillator Frequency fOSC 200 350 500 kHz

Crosstalk RL = 32Ω, VIN = 200mVP-P, f = 10kHz AV = -1V/V 90 dB

Thermal Shutdown Threshold 137

Thermal Shutdown Hysteresis 11 NOTE: 1. For CIN, C1 and etc, please refer to the Functional Diagram and Typical Application on pages 8 and 9.



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TYPICAL PERFORMANCE CHARACTERISTICS

THD+N vs. Output Power

Output Power (mW)

THD+N vs. Output Power

Output Power (mW)

0

50

100

150

200

250

300

350

0 50 100 150 200 250 300

Pow

er D

issi

patio

n (m

W)

Output Power (mW)

Power Dissipation vs. Output Power

VDD = 5V, RL = 32Ω f = 1kHz, BW < 22kHz

OUTPUTS IN PHASE

ONE CHANNEL DRIVEN

0

50

100

150

200

250

2.5 3 3.5 4 4.5 5 5.5

Out

put P

ower

(mW

)

Supply Voltage (V)

Output Power vs. Supply Voltage

RL = 32Ω, f = 1kHz, BW < 22kHz ONE CHANNEL DRIVEN

THD+N 1%

THD+N 10%

0

2

5

2

5

2

5

2

5

0

30

60

90

120

150

0 20 40 60 80 100 120

Pow

er D

issi

patio

n (m

W)

Output Power (mW)

Power Dissipation vs. Output Power

VDD = 3V, RL = 32Ω f = 1kHz, BW < 22kHz

OUTPUTS IN PHASE

ONE CHANNEL DRIVEN

0

50

100

150

200

250

2.5 3 3.5 4 4.5 5 5.5

Out

put P

ower

(mW

)

Supply Voltage (V)

Output Power vs. Supply Voltage

RL = 32Ω, f = 1kHz, BW < 22kHz OUTPUTS IN PHASE

THD+N 1%

THD+N 10%

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001 25 50 75 100 125 150 175 200

OUTPUTS IN PHASE ONE CHANNEL DRIVEN

VDD = 5V RL = 32Ω f = 1kHz BW < 22kHz

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001 10 20 30 40 50 60 70 80

OUTPUTS IN PHASE ONE CHANNEL DRIVEN

VDD = 3V RL = 32Ω f = 1kHz BW < 22kHz

THD

+N (%

)

THD

+N (%

)



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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

THD+N vs. Frequency

Frequency (Hz)

THD+N vs. Frequency

Frequency (Hz)

-120

-100

-80

-60

-40

0.01 0.1 1 10 100

Cro

ssta

lk (d

B)

Frequency (kHz)

Crosstalk vs. Frequency

VDD = 5V, RL = 32Ω VOUT = 70mVRMS, AV = -2

RIGHT TO LEFT

LEFT TO RIGHT

-120

-100

-80

-60

-40

0.01 0.1 1 10 100

Cro

ssta

lk (d

B)

Frequency (kHz)


VDD = 5V, RL = 32Ω VIN = 200mVP-P, AV = -1

RIGHT TO LEFT

LEFT TO RIGHT

-120

-100

-80

-60

-40

0.01 0.1 1 10 100

Cro

ssta

lk (d

B)

Frequency (kHz)


VDD = 3V, RL = 32Ω VOUT = 70mVRMS, AV = -2

RIGHT TO LEFT

LEFT TO RIGHT

-120

-100

-80

-60

-40

0.01 0.1 1 10 100

Cro

ssta

lk (d

B)

Frequency (kHz)


VDD = 3V, RL = 32Ω VIN = 200mVP-P, AV = -1

RIGHT TO LEFT

LEFT TO RIGHT

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001 10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k

PO = 5mW PO = 20mW PO = 80mW

VDD = 5V RL = 32Ω AV = -1V/V BW < 22kHz

THD

+N (%

)

10

5

2

1

0.5

0.2

0.1

0.05

0.02

0.01

0.005

0.002

0.001 10 20 50 100 200 500 1k 2k 5k 10k 20k 50k 100k

PO = 5mW PO = 20mW PO = 40mW

VDD = 3V RL = 32Ω AV = -1V/V BW < 22kHz

THD

+N (%

)



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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

-100

-80

-60

-40

-20

0

0.01 0.1 1 10 100

PSR

R (d

B)

Frequency (kHz)

Power Supply Rejection Ratio vs. Frequency

VDD = 5V, RL = 32Ω Input AC-coupled to GND VRIPPLE = 200mVP-P

LEFT CHANNEL

RIGHT CHANNEL

-100

-80

-60

-40

-20

0

0.01 0.1 1 10 100

PSR

R (d

B)

Frequency (kHz)



LEFT CHANNEL

RIGHT CHANNEL

-100

-90

-80

-70

-60

-50

2.5 3 3.5 4 4.5 5 5.5

PSR

R (d

B)

Supply Voltage (V)

PSRR vs. Supply Voltage

f = 1kHz VRIPPLE = 200mVP-P

LEFT CHANNEL

RIGHT CHANNEL

-100

-80

-60

-40

-20

0

0.01 0.1 1 10 100

PSR

R (d

B)

Frequency (kHz)



LEFT CHANNEL

RIGHT CHANNEL

-100

-80

-60

-40

-20

0

0.01 0.1 1 10 100

PSR

R (d

B)

Frequency (kHz)



LEFT CHANNEL

RIGHT CHANNEL

0

0.5

1

1.5

2

2.5

3

3.5

4

2.5 3 3.5 4 4.5 5 5.5

Turn

-On

Tim

e (m

s)

Supply Voltage (V)

Turn-On Time vs. Supply Voltage



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FUNCTIONAL DIAGRAM AND TYPICAL APPLICATION

CHARGEPUMP

UVLO/SHUTDOWNCONTROL

CLICK-AND-POPSUPPRESSION

_

+

_

+

2.7V to 5.5V

C31µF

1

PVDD

9,13

SVDD

16

SHDN

14

INL-

LEFTCHANNELAUDIO IN

CIN1µF RIN* RF*

OUTL 12

HEADPHONEJACK

10OUTR

RIN* RF*CIN1µF

RIGHTCHANNELAUDIO IN

8

INR-

6

SGND

3

PGNDSVSS

11

PVSS

5

C21µF

C1P

C1N

C11µF

2

4

INR+

7

SVDD

SVDD

SVSS

SVSS

* FOR SGM4917A, RIN AND RF ARE EXTERNAL TO THE DEVICE. FOR SGM4917B, RIN AND RF ARE INTERNAL TO THE DEVICE, RIN = 15kΩ, RF = 30kΩ

15

INL+

10kΩ

To External Power Supply or Control I/O

Figure 1. Typical Single-Ended Input Application Circuit NOTES: 1. To ensure the normal operation of the device, decoupling capacitor (C3) must be placed as close to SGM4917 as possible. The loop length formed by C3, SVDD and GND should be no longer than 1.2cm; otherwise the device will not start up at high supply voltage. 2. In order to get good performance, it’s important to select the right C1, C2 and C3 in application. All tests are performed with circuit set up with X5R and X7R capacitors. Capacitors having high dissipative loss, such as Y5V capacitor, may cause performance degradation and unexpected system behavior. 3. A 10kΩ resistor must be serially connected to SHDN pin.



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FUNCTIONAL DIAGRAM AND TYPICAL APPLICATION (continued)

CHARGEPUMP

UVLO/SHUTDOWNCONTROL

CLICK-AND-POPSUPPRESSION

_

+

_

+

2.7V to 5.5V

C31µF

1

PVDD

9,13

SVDD

16

SHDN

14

INL-

LEFTCHANNELAUDIO IN

CIN1µF

RIN1* RF1*

OUTL 12

HEADPHONEJACK

10OUTR

RIN1* RF1*

CIN1µF


8

INR-

6

SGND

3

PGNDSVSS

11

PVSS

5

C21µF

C1P

C1N

C11µF

2

4

INR+

7

SVDD

SVDD

SVSS

SVSS

* FOR SGM4917A, RIN_ AND RF_ ARE EXTERNAL TO THE DEVICE. FOR SGM4917B, RIN_ AND RF_ ARE INTERNAL TO THE DEVICE, RIN1 = 15kΩ, RF1 = 30kΩ, RIN2 = 15kΩ, RF2 = 30kΩ

15

INL+

RIN2*

RF2*

LEFTCHANNELAUDIO IN

RIN2*

RF2*


CIN1µF

CIN1µF

10kΩ

To External Power Supply or Control I/O

Figure 2. Typical Differential Input Application Circuit NOTES: 1. To ensure the normal operation of the device, decoupling capacitor (C3) must be placed as close to SGM4917 as possible. The loop length formed by C3, SVDD and GND should be no longer than 1.2cm; otherwise the device will not start up at high supply voltage. 2. In order to get good performance, it’s important to select the right C1, C2 and C3 in application. All tests are performed with circuit set up with X5R and X7R capacitors. Capacitors having high dissipative loss, such as Y5V capacitor, may cause performance degradation and unexpected system behavior. 3. A 10kΩ resistor must be serially connected to SHDN pin.



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REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. JULY 2017 ‒ REV.A.2 to REV.A.3

Updated Typical Application Circuit .................................................................................................................................................................. 8-9

DECEMBER 2012 ‒ REV.A.1 to REV.A.2

Added note for Typical Application Circuit ......................................................................................................................................................... 8-9

SEPTEMBER 2012 ‒ REV.A to REV.A.1

Added Tape and Reel Information ................................................................................................................................................................ 11-12

Changes from Original (FEBRUARY 2012) to REV.A

Changed from product preview to production data ............................................................................................................................................. All

PACKAGE INFORMATION

TX00081.000 SG Micro Corp www.sg-micro.com

PACKAGE OUTLINE DIMENSIONS TQFN-3×3-16L

Symbol Dimensions

In Millimeters Dimensions

In Inches MIN MAX MIN MAX

A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A2 0.203 REF 0.008 REF D 2.900 3.100 0.114 0.122

D1 1.600 1.800 0.063 0.071 E 2.900 3.100 0.114 0.122

E1 1.600 1.800 0.063 0.071 k 0.200 MIN 0.008 MIN b 0.180 0.300 0.007 0.012 e 0.500 TYP 0.020 TYP L 0.300 0.500 0.012 0.020

TOP VIEW BOTTOM VIEW

SIDE VIEW

A

A2

A1

e

E1

b

L

k

D1

D

E

N1

N5

N16

1.7

1.7

0.7

2.23.6

0.5 0.24

RECOMMENDED LAND PATTERN (Unit: mm)

PACKAGE INFORMATION


TAPE AND REEL INFORMATION NOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF TAPE AND REEL

Package Type Reel Diameter

Reel Width W1

(mm) A0

(mm) B0

(mm) K0

(mm) P0

(mm) P1

(mm) P2

(mm) W

(mm) Pin1

Quadrant

DD

0001 TQFN-3×3-16L 13″ 12.4 3.35 3.35 1.13 4.0 8.0 2.0 12.0 Q1

Reel Width (W1)

Reel Diameter

REEL DIMENSIONS

TAPE DIMENSIONS

DIRECTION OF FEED

P2 P0

W

P1 A0 K0

B0Q1 Q2

Q4Q3 Q3 Q4

Q2Q1

Q3 Q4

Q2Q1

PACKAGE INFORMATION


CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard.

KEY PARAMETER LIST OF CARTON BOX

Reel Type Length (mm)

Width (mm)

Height (mm) Pizza/Carton

DD

0002 13″ 386 280 370 5

Documents

SGM4917 80mW, Capless, Stereo Headphone Amplifier with ...cn.sg-micro.com/uploads/soft/20191119/1574130682.pdf · 80mW, Capless, Stereo Headphone Amplifier with Shutdown SG Micro