10
FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with discrete components, and a switcher for selecting either a dual channel swithing power supply or battery as power source. Power The switching power supply takes 5V in and converts to +12V and -12V, ~150mA each. A slider switch is added to select between this switcher and battery. Amplifier circuit Each channel in the circuit can be divided into a DiffAmp stage, a constant current stage, a voltage amplifer stage and an output buffer. A thorough description can be found in the printout from ELEKTOR magazine in the end of this document. Your assignment will be the following: 1) Create a schematic drawing in CadSTAR based on the schematics in this document. 2) Select the power and audio connectors you want to use from the alternatives given in the schematics. 3) Do a SPICE simulation in either LTSpice or PSpice, see guide on this further down. 4) Create a layout. 5) Assemble one board at ELAB on assembly day 6) Test, verify, do repairs/modifications, and do a simple measurement to compare with your simulations.

FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

  • Upload
    others

  • View
    26

  • Download
    1

Embed Size (px)

Citation preview

Page 1: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

FYS4260 Project

Operational Amplifier / Head Phone Amplifier

The design consist of a dual channel amplifier built with discrete components, and a switcher for

selecting either a dual channel swithing power supply or battery as power source.

Power

The switching power supply takes 5V in and converts to +12V and -12V, ~150mA each. A slider switch

is added to select between this switcher and battery.

Amplifier circuit

Each channel in the circuit can be divided into a DiffAmp stage, a constant current stage, a voltage

amplifer stage and an output buffer. A thorough description can be found in the printout from

ELEKTOR magazine in the end of this document.

Your assignment will be the following:

1) Create a schematic drawing in CadSTAR based on the schematics in this document.

2) Select the power and audio connectors you want to use from the alternatives given in the

schematics.

3) Do a SPICE simulation in either LTSpice or PSpice, see guide on this further down.

4) Create a layout.

5) Assemble one board at ELAB on assembly day

6) Test, verify, do repairs/modifications, and do a simple measurement to compare with your

simulations.

Page 2: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

SPICE Simulations

Export SPICE Netlist from CadSTAR

File -> File Export

1. Select Format PSpice

2. We only simulate on channel, make sure you have the correct sheet active or use “selected

sheets”

3. Click options and select header file

“FYS4260_Amplifier_Spice_Header_LTSpice.in” located in the project folder on

FELT/ELAB/FYS4260

4. Click Browse and select name and destination folder for the exported netlist.

Edit SPICE Netlist

The header file inserts the necessary generators and power supplies to successfully run the

simulation, but we need to tell which nodes they are connected. Open the exported netlist in a text

editor and located the Generators and Power Supply sections in the beginning of the netlist. From

CadSTAR we now need to locate the names of the VPOS, VNEG, Vin and Vout nodes in the netlist,

and replace the XX in the generated netlist with the correct node numbers. NOTE, the node numbers

and component names are going to be different in your design, this is just an example!

Page 3: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

VPOS Is f.ex. the positive node of the C5 capacitor (GND is always node 0 is SPICE). This tells us that

VPOS is node 3 in this design.

VNEG Is the negative node of C6 -> Node 21. Replace XX in VNEG Power Supply with 21

Vin Is terminal 2 of C1 -> node 7

Vout is the common node of R6 and R7 -> node 2.

This gives

Vin 7 0 AC 1 SIN ( 0V 0.1V 1KHZ 0 0 0 )

VDC1 3 0 9V

VDC2 21 0 -9V

Rload 2 0 10R

Simulate in LTSpice

Open LTSpice, select File -> Open and locate your modified netlist. Run simulation, right click and

select add trace. Add your Vout node. To see other simulations just comment out the AC Sweep.

To use PSPICE follow the same procedure, but use the _PSIPCE header file when exporting from

CadSTAR.

Page 4: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

LEFT CHANNEL RIGHT CHANNEL

POWER

Q1B_EQ1A_E

SHEET NAME:

DATE:

PROJECT:

SHEET:

USER:

ELAB, Dept. of Physics

UNIVERSITY OF OSLO©

RIGHT_OUT:RIGHT CHANNEL

RIGHT_OUT:RIGHT CHANNEL

LEFT_OUT:LEFT CHANNEL

LEFT_OUT:LEFT CHANNEL

RIGHT_IN:RIGHT CHANNEL

LEFT_IN:LEFT CHANNEL

P5V0

4

3

2

1

L Ch

Switch

R Ch

COM

CN2

Jack 3.5 Stereo

MARK[1-3]FIDUCIAL MARK

4

3

2

1

L Ch

Switch

R Ch

COM

CN1

Jack 3.5 Stereo

1

2 3 4

CN7

Phono Mono

1

3

2

CN3

PJ-202BH

1MH[1-2]

MH/3.2mm

1

2 3 4

CN6

Phono Mono

1

2

3

VPOS_IN

VNEG_IN

CN5

MICRO-FIT

2

1

3

CW

RP

4

10

K0

1

2

3

4

56

VCC

D-

D+

ID/SENSE/NC

GNDSHIELD

CN4

uUSB

2

1

3

CW

RP

5

10

K0

21

3

Q2

_C

CW

RP2

100R

Potmeter to replace fixed resistors used only for

simulation on left channel. Remove resistors from pcb.

Fiducial MarksMountingHoles

3.2mm

DO NOT CONNECT

SWITCH TO GND

1 / 4

Roght Channel

11.10.2016

halvorst

TOP

Left Channel

(for simulation)

MicroFit

Pinheader

for battery

3.5mm Jack or

Phono connector

for signal in.

3.5mm Jack or

Phono connector

for signal out

(Select one)

headphone amplifier v1

"Gain"

potmeters

5V0 Input

to Switcher

Either

USB or

2.1mm

(Select one)

Page 5: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

SHEET NAME:

DATE:

PROJECT:

SHEET:

USER:

ELAB, Dept. of Physics

UNIVERSITY OF OSLO©

LEFT_IN:TOP

LEFT_OUT:TOP

VNEG

VPOS

3

1

2

Q2

_C

Q2

BC817W

1 2

C3

10PF

1 2

C2

6P8F

6

1

5

Q1A

_E

Q1-A

FMBM5551

1

3

D4

BA

S1

6-2

15

1

3

D1B

AS

16

-21

5

1

3

D2

BA

S1

6-2

15

3

1

2

Q3

BC817W

1 2

C1

1U0F

4

3

2

Q1B

_E

Q1-B

FMBM5551

1

2

R3

1K

00

1

2

R7

10

R0

1

2

R4

4K

70

1 2R5

10K0

1

2

R9

150

R1

2

R1

0

150

R

1

3

D3

BA

S1

6-2

15

4

1

3

Q5

FZT651TA

3

1

2

Q4

BC807-40W

4

1

3

Q6

FZT751TA

1

2

R2

1K

00

1

2

R6

10

R0

1

2

R12

1K

50

1

2

R1

10

K0

1

2

R8

47R

0

1

2

R1

1

270R

1

2

R1

3

47R

0

1

2

C5

10

0U

F/1

6V

/C

1

2

C6

10

0U

F/1

6V

/C

1

2

C4

10

0U

F/1

6V

/C

2 / 4

OBS! 1206 SIZE

OBS! 1206 SIZE

11.10.2016

halvorst

LEFT CHANNEL

Resistors here only

used for simulation,

to be replaced with

potmeter on pcb.

headphone amplifier v1

Page 6: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

VPOS_IN

VPOS_SW

VNEG_SW

VNEG_IN

VNEG_SW

SHEET NAME:

DATE:

PROJECT:

SHEET:

USER:

ELAB, Dept. of Physics

UNIVERSITY OF OSLO©

P5V0

VNEG

VPOS

3

4

13

2

14

15

16

1

17

7

6

9

10

11

12

5

8SWN

SWN

GND

VOUTN

VPP

SDA

SCL

ADDR

GND

RAMPP

RAMPN

VOUTP

CAPP

CAPP

SWP

VIN

nSHDN

VPOS_SW

P1

LTC3582-12

1

2

C13

4U

7F

/25

V

1 2

C17

10NF

1

2

C1

5

4U

7F

/25

V

A

C D11

LE

D L

IGH

TB

LU

E

1 2

C16

1U0F

1

2

C14

4U

7F

/25

V

2

6

8

7

5

4

3

1

SW1

EG2310A

1 2

C18

10NF

1 2

L2

6U8

1

2

L1

6U

8

1

2

R2

1

4K

70

A

C

D9

B0

54

0W

S

A

C

D1

0

B0

54

0W

S

Switcher circuit 5V -> +/-12V

3 / 4

11.10.2016

halvorst

POWER

Switch to select

Power Source:

TOP - Switcher

MID - Off

BOT - Direct

headphone amplifier v1

Page 7: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with

SHEET NAME:

DATE:

PROJECT:

SHEET:

USER:

ELAB, Dept. of Physics

UNIVERSITY OF OSLO©

RIGHT_IN:TOP

RIGHT_OUT:TOP

VNEG

VPOS

1 2

C7

1U0F

1 2

C9

10PF

1

3

D6

BA

S1

6-2

15

1

3

D8

BA

S1

6-2

15

3

1

2

Q8

BC817W

1 2

C8

6P8F

6

1

5

Q7-A

FMBM5551

4

1

3

Q11

FZT651TA

3

1

2

Q10

BC807-40W

4

1

3

Q12

FZT751TA

21

3

CW

RP3

100R

1

2

R1

6

1K

00

1

3

D7

BA

S1

6-2

15

1

3

D5

BA

S1

6-2

15

3

1

2

Q9

BC817W

4

3

2

Q7-B

FMBM5551

1

2

R15

1K

00

1

2

R1

4

10

K0

1

2

R1

7

4K

70

1 2R18

10K0

1

2

R1

9

10

R0

1

2

R2

0

10

R0

1

2

R22

15

0R

1

2

R2

3

15

0R

1

2

R2

4

270R

1

2

R25

1K

50

1

2

C10

10

0U

F/1

6V

/C 1

2

C1

1

10

0U

F/1

6V

/C

1

2

C1

2

10

0U

F/1

6V

/C

OBS! 1206 SIZE

OBS! 1206 SIZE

4 / 4

11.10.2016

halvorst

RIGHT CHANNEL

headphone amplifier v1

Page 8: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with
Page 9: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with
Page 10: FYS4260 Project Operational Amplifier / Head Phone Amplifier · FYS4260 Project Operational Amplifier / Head Phone Amplifier The design consist of a dual channel amplifier built with