AD1837AAS datasheet(7/24 Pages) AD

Part #	AD1837AAS

Description	2 ADC, 8 DAC, 96 kHz, 24-Bit Codec

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Manufacturer	AD [Analog Devices]

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REV. A

AD1837A

–7–

PIN CONFIGURATION

1

2

3

4

5

6

7

8

9

10

11

12

13

AVDD

OUTL2

NC

OUTR1

NC

OUTL1

NC

PD/RST

CIN

CLATCH

DVDD

NC

OUTR3

NC

OUTL4

NC

OUTR4

AGND

DLRCLK

DBCLK

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

52

51

50

49

48

47

46

45

44

43

42

41

40

AGND

M/S

AGND

DVDD

AVDD

AD1837A

TOP VIEW

(Not to Scale)

NC = NO CONNECT

PIN FUNCTION DESCRIPTIONS

Input/

Pin Number

Mnemonic

Output

Description

1, 39

DVDD

Digital Power Supply. Connect to digital 5 V supply.

2CLATCH

I

Latch Input for Control Data.

3

CIN

I

Serial Control Input.

4

PD/RST

I

Power-Down/Reset.

5, 10, 16, 24, 30, 35

AGND

Analog Ground.

6, 12, 25, 31

NC

Not Connected.

7, 13, 26, 32

OUTLx

O

DACx Left Channel Output.

8, 14, 27, 33

NC

Not Connected.

9, 15, 28, 34

OUTRx

O

DACx Right Channel Output.

11, 19, 29

AVDD

Analog Power Supply. Connect to analog 5 V supply.

17

FILTD

Filter Capacitor Connection. Recommended 10

mF/100 nF.

18

FILTR

Reference Filter Capacitor Connection. Recommended 10

mF/100 nF.

20

ADCLN

I

ADC Left Channel Negative Input.

21

ADCLP

I

ADC Left Channel Positive Input.

22

ADCRN

I

ADC Right Channel Negative Input.

23

ADCRP

I

ADC Right Channel Positive Input.

36

M/S

I

ADC Master/Slave Select.

37

DLRCLK

I/O

DAC LR Clock.

38

DBCLK

I/O

DAC Bit Clock.

40, 52

DGND

Digital Ground.

41 to 44

DSDATAx

I

DACx Input Data (Left and Right Channels).

45

ABCLK

I/O

ADC Bit Clock.

46

ALRCLK

I/O

ADC LR Clock.

47

MCLK

I

Master Clock Input.

48

ODVDD

Digital Output Driver Power Supply.

49

ASDATA

O

ADC Serial Data Output.

50

COUT

O

Output for Control Data.

51

CCLK

I

Control Clock Input for Control Data.

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