FEATURES

TWO DACs IN A 0.3 WIDE PACKAGE

SINGLE +5V SUPPLY

HIGH-SPEED DIGITAL INTERFACE:

Serial—DAC7800

8 + 4-Bit Parallel—DAC7801

12-Bit Parallel—DAC7802

MONOTONIC OVER TEMPERATURE

LOW CROSSTALK: –94dB min

FULLY SPECIFIED OVER –40OC TO +85OC

APPLICATIONS

PROCESS CONTROL OUTPUTS

ATE PIN ELECTRONICS LEVEL SETTING

PROGRAMMABLE FILTERS

PROGRAMMABLE GAIN CIRCUITS

AUTO-CALIBRATION CIRCUITS

DESCRIPTION

The DAC7800, DAC7801 and DAC7802 are members of a

new family of monolithic dual 12-bit CMOS multiplying Digital-

to-Analog Converters (DACs). The digital interface speed

and the AC multiplying performance are achieved by using

an advanced CMOS process optimized for data conversion

circuits. High stability on-chip resistors provide true 12-bit

integral and differential linearity over the wide industrial

temperature range of –40°C to +85°C.

The DAC7800 features a serial interface capable of clockingin

data at a rate of at least 10MHz. Serial data is clocked

(edge triggered) MSB first into a 24-bit shift register and then

latched into each DAC separately or simultaneously as

required by the application. An asynchronous CLEAR control

is provided for power-on reset or system calibration functions.

It is packaged in a 16-pin 0.3 wide plastic DIP.

The DAC7801 has a 2-byte (8 + 4) double-buffered interface.

Data is first loaded (level transferred) into the input registers

in two steps for each DAC. Then both DACs are updated

simultaneously. The DAC7801 features an asynchronous

CLEAR control. The DAC7801 is packaged in a 24-pin 0.3

wide plastic DIP. The DAC7802 has a single-buffered 12-bit

data word interface. Parallel data is loaded (edge triggered)

into the single DAC register for each DAC. The DAC7802 is

packaged in a 24-pin 0.3 wide plastic DIP.