AD-DPGIOZ datasheet(9/61 Pages) AD

9 / 61 page

Data Sheet

AD9961/AD9963

Rev. A | Page 9 of 60

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

AUX33V

AUXADCREF

RXQP

RXQN

RXGND

RXBIAS

RX18V

RX33V

RX18VF

RXCML

RXGND

RXIN

RXIP

LDO_EN

RESET

SCLK

SDIO

DLLFILT

DLL18V

DVDD18

DRVDD

TXD0

TXD1

TXD2

TXD3

TXD4

TXD5

TXD6

TXD7

TXD8

TXD9

TXIQ/TXnRX

TXCLK

NOTES

1. EXPOSED PAD MUST BE SOLDERED TO PCB.

2. NC = NO CONNECT.

PIN 1

INDICATOR

AD9961

(TOP VIEW)

Figure 2. AD9961 Pin Configuration

Table 8. AD9961 Pin Function Descriptions

Pin No.

Mnemonic

Description

AUX33V

Analog Supply for the Auxiliary ADC and Auxiliary DACs (3.3 V ± 5%, 1.8 V ± 5% If Auxiliary ADC Is

Powered Down).

AUXADCREF

Reference Output (Or Input) for Auxiliary ADC.

3, 4

RXQP, RXQN

Differential ADC Q Inputs. The default full-scale input voltage range is 1.56 V p-p differential.

5, 11

RXGND

Receive Path Ground.

RXBIAS

External Bias Resistor Connection. An optional 10 kΩ resistor can be connected between this pin and the

analog ground to improve the accuracy of the full-scale range of the Rx ADCs.

RX18V

Output of RX18V Voltage Regulator.

RX33V

Input to RX18V and RX18VF Voltage Regulators (2.5 V to 3.3 V). If LDOs are not being used, short Pin 8 to

Pin 7.

RX18VF

Output of RX18VF Voltage Regulator.

RXCML

ADC Common-Mode Voltage Output.

12, 13

RXIN, RXIP

Differential ADC I Inputs. The default full-scale input voltage range is 1.56 V p-p differential.

LDO_EN

Control Pin for LDOs (GND = Disable all LDOs, Float = Enable DVDD18 LDO Only, DRVDD = Enable All

LDOs).

RESET

Reset. Active low to reset the configuration registers to default values and reset device.

SCLK

Clock Input for Serial Port.

Active Low Chip Select.

SDIO

Bidirectional Data Line for Serial Port.

19, 34

DGND

Digital Core Ground.

20, 33, 51

DRVDD

Input/Output Pad Ring Supply Voltage (1.8 V to 3.3 V).

21 to 30

TRXD9 to TRXD0

ADC Output Data in Full Duplex Mode. ADC output data and DAC input data in half-duplex mode.

31, 32,

49, 50

Not Connected.

TRXIQ

Output Signal Indicating from Which ADC the Output Data Is Sourced.

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