PT2338

V1.0

2

APPLICATION CIRCUIT DIAGRAM

SINGLE ENDED CONFIGURATION

AMP 2

AMP 1

Bias

Control

1

2

3

4

56

7

8

9

10

350K

350K

IP1

IP2

IN1

IN2

VO1

VO2

VDD

GND

BYPASS

SD

R2A

100K

R2C

100K

R2D

100K

R2B

100K

R1A

100K

R1B

100K

R1C

100K

R1D

100K

Cbypass

1uF

Hi=Shutdown On

VDD

Cs

1uF

VDD

Co1

220uF

Co2

220uF

LCH

RCH

Ci

0.47uF

Ci

0.47uF

Ci

0.47uF

Ci

0.47uF

L

R

G

RIN

LIN

2

1

3

Note :

1.

Single-ended inverted amplifier configuration can get the better performance of the PSRR.

2.

Increase the capacitance of the Cbypass can improve the PSRR performance, but it also extends power on muting period.

DIFFERENTIAL INPUT CONFIGURATION

AMP 2

AMP 1

Bias

Control

1

2

3

4

56

7

8

9

10

350K

350K

IP1

IP2

IN1

IN2

VO1

VO2

VDD

GND

BYPASS

SD

R2A

100K

R2C

100K

R2D

100K

R2B

100K

R1A

100K

R1B

100K

R1C

100K

R1D

100K

Cbypass

1uF

Hi=Shutdown On

VDD

Cs

1uF

VDD

Co1

220uF

Co2

220uF

LCH

RCH

Ci

0.47uF

Ci

0.47uF

Ci

0.47uF

Ci

0.47uF

L

R

G

LIN+

RIN+

RIN-

LIN-

2

1

3