Dual, Serial-Input,

Voltage-Output, 12-Bit MDAC

6

_______________________________________________________________________________________

______________________________________________________________Pin Description

A

AGNDA

A = VOUTA, 5V/div

TIMEBASE = 2

µs/div

VREFA = ±10V SQUARE WAVE

LARGE-SIGNAL PULSE RESPONSE

____________________________Typical Operating Characteristics (continued)

PIN

NAME

FUNCTION

1

RFBA

Feedback Resistor for DACA

2

VREFA

Reference Input for DACA

3

VOUTA

Voltage Output for DACA

4

AGNDA

Analog Ground for DACA

5

AGNDB

Analog Ground for DACB

6

VOUTB

Voltage Output for DACB

7

VREFB

Reference Input for DACB

8

RFBB

Feedback Resistor for DACB

9

Negative Supply Voltage

10

DGND

Digital Ground

11

SCLK

Serial Clock Input

12

DOUT

Serial Data Output. Open-drain N-channel MOSFET output: requires external pull-up resis-

tor. Data on DOUT changes on the falling edge of SCLK. Serial output data is delayed 24

clock cycles from DIN.

13

DIN

Serial Data Input. CMOS- and TTL-compatible input. Data is clocked into DIN on the rising

edge of SCLK.

CS must be low for data to be clocked in.

16

Positive Supply Voltage

15

LDAC

Asynchronous Load DAC Input, active low. DAC latches are updated when

CS is high and

LDAC is low.

14

CS

Chip-Select Input, active low. Data is shifted in and out when

CS is low. DAC latches are

updated when

CS is high and LDAC is low.

A

AGNDA

TIMEBASE = 2

µs/div

SMALL-SIGNAL PULSE RESPONSE