8

Pin Descriptions

PIN

NUMBER

PIN

NAME

PIN DESCRIPTION

43, 44

D13-D12

Digital Input bits 13 and 12. D13 is MSB.

1-12

D11-D0

Digital Input bits 11 thru 0. D0 is LSB.

13, 14

RXO

±

Receiver differential outputs.

15

VSSA_RX

Receiver -5V supply.

16

VDDA_RX

Receiver +5V supply.

17, 18

PGAI

±

PGA2 differential inputs.

19, 20

PGAO

±

PGA1 differential outputs.

21, 22

RXI

±

Receiver differential inputs (PGA1 inputs).

23

GNDA_RX

Receiver ground.

24

GNDD_RX

Serial interface ground.

25

SCLK

Serial interface clock pin.

26

RST

Serial interface reset pin.

27

SDI

Serial interface data input.

28

CS

Serial interface chip select.

29

VDDD_RX

Shift register Digital +5V supply.

30

ARTN

Analog return (ground).

31

VSSA_TX

Transmitter -5V supply.

32

VDDA_TX

Transmitter +5V supply.

33

VSSA_ATT

Attenuator -5V supply.

34, 35

TXO

±

Transmitter differential outputs.

36

VDDA_ATT

Attenuator +5V supply.

37

GNDA_TX

Analog ground for transmitter.

38

CTLOUT

Control Amplifier Output. Provides precision control of the current sources. Typically connected to

CTLIN.

39

CTLIN

Input to the Current Source Base Rail. Typically connected to CTLOUT. Requires a 0.1

µF capacitor

to VSSA_TX. Allows external decoupling of the current sources.

40

GNDD_TX

Digital Ground.

41

CLK

DAC input latch clock.

42

VDDD_TX

DAC digital +5V supply.

HC6094