AD9876BST datasheet(6/24 Pages) AD

6 / 24 page

REV. A

AD9876

–6–

Pin No.

Mnemonic

Function

OSCIN

Crystal Oscillator Inverter Input

SENABLE

Serial Bus Enable Input

SCLK

Serial Bus Clock Input

SDATA

Serial Bus Data I/O

5, 38, 47

AVDD

Analog 3.3 V Power Supply

6, 9, 39, 42, 43, 46

AVSS

Analog Ground

7Tx+

Transmit DAC+ Output

Tx–

Transmit DAC– Output

FSADJ

DAC Full-Scale Output Current Adjust with External Resistor

REFIO

DAC Band Gap Decoupling Node

PWR DN

Power-Down Input

DVSS

Digital Ground

DVDD

Digital 3.3 V Power Supply

Regulator Feedback Input

GATE

Regulator Output to FET Gate

GAIN

Transmit Data Port (Tx [5:0]) Mode Select Input

Tx QUIET

Transmit Quiet Input

19–24

Tx [5:0]

Transmit Data Input

Tx SYNC

Transmit Synchronization Strobe Input

CLK-A

× fOSCIN Clock Output

CLK-B

M/N

× f

OSCIN Clock Output

Rx SYNC

Receive Data Synchronization Strobe Output

29–34

Rx[5:0]

Receive Data Output

DRVDD

Digital I/O 3.3 V Power Supply

DRVSS

Digital I/O Ground

RESET

Reset Input

REFB

ADC Reference Decoupling Node

REFT

ADC Reference Decoupling Node

Rx+

Receive Path + Input

Rx–

Receive Path – Input

XTAL

Crystal Oscillator Inverter Output

PIN FUNCTION DESCRIPTIONS

PIN CONFIGURATION

DRVSS

DRVDD

Rx [0]

Rx [1]

Rx [2]

Rx [3]

Rx [4]

Rx [5]

Rx SYNC

CLK-B

CLK-A

Tx SYNC

13 14 15 16 17 18 19 20 21 22 23 24

OSCIN

SENABLE

SCLK

SDATA

AVDD

AVSS

Tx+

Tx–

AVSS

FSADJ

REFIO

PWR DN

48 47 46 45 44

39 38 37

43 42 41 40

PIN 1

IDENTIFIER

TOP VIEW

(Not to Scale)

AD9876

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