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BLOCK DIAGRAM

Single-Ended

MUX and PGA

BCK

Reference

Delta-Sigma

Modulator

Decimation

Filter

with

High-Pass Filter

Power Supply

AGND

DGND

Clock and Timing Control

Audio

Data

Interface

Control

Data

Interface

LRCK

DOUT

OVER

TEST0

TEST1

RST

SCKI

MOUTL

Single-Ended

MUX and PGA

Delta-Sigma

Modulator

MOUTR

B0004-09

PIN ASSIGNMENTS

PCM1850A

(TOP VIEW)

23 22 21 20 19

1

2

25

26

27

28

29

30

31

32

16

15

14

13

12

11

10

9

MOUTL

MOUTR

RST

TEST1

AGND

MS

MC

MD

24

18

3

4

5

6

7

8

17

PCM1851A

(TOP VIEW)

23 22 21 20 19

1

2

25

26

27

28

29

30

31

32

16

15

14

13

12

11

10

9

MOUTL

MOUTR

RST

TEST1

AGND

ADR

SCL

SDA

24

18

3

4

5

6

7

8

17

P0040-01

PCM1850A

PCM1851A

SLES173 – MARCH 2006

This integrated circuit can be damaged by ESD. Texas Instruments 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.

2

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