FEATURES

SINGLE INTEGRATED CIRCUIT CHIP

MICROCOMPUTER INTERFACE:

Double-Buffered Latch

VOLTAGE OUTPUT: ±10V, ±5V, +10V

MONOTONICITY GUARANTEED OVER

TEMPERATURE

±1/2LSB MAXIMUM NONLINEARITY OVER

TEMPERATURE

GUARANTEED SPECIFICATIONS AT ±12V

AND ±15V SUPPLIES

TTL/5V CMOS-COMPATIBLE LOGIC

INPUTS

DESCRIPTION

The DAC811 is a complete, single-chip integratedcircuit,

microprocessor-compatible, 12-bit digital-toanalog

converter. The chip combines a precision voltage

reference, microcomputer interface logic, and

double-buffered latch, in a 12-bit D/A converter with

a voltage output amplifier. Fast current switches and a

laser-trimmed thin-film resistor network provide a

highly accurate and fast D/A converter.

Microcomputer interfacing is facilitated by a doublebuffered

latch. The input latch is divided into three

4-bit nibbles to permit interfacing to 4-, 8-, 12-, or

16-bit buses and to handle right-or left-justified data.

The 12-bit data in the input latches is transferred to the

D/A latch to hold the output value.

Input gating logic is designed so that loading the last

nibble or byte of data can be accomplished simultaneously

with the transfer of data (previously stored in

adjacent latches) from adjacent input latches to the

D/A latch. This feature avoids spurious analog output

values while using an interface technique that saves

computer instructions.

The DAC811 is laser trimmed at the wafer level and

is specified to ±1/4LSB maximum linearity error (B

and K grades) at 25°C and ±1/2LSB maximum over

the temperature range. All grades are guaranteed monotonic

over the specification temperature range.

The DAC811 is available in six performance grades

and three package types. DAC811J and K are specified

over the temperature ranges of 0°C to +70°C;

DAC811A and B are specified over –25°C to +85°C;

DAC811J and K are packaged in a reliable 28-pin

plastic DIP or plastic SO package, while DAC811A

and B are available in a 28-pin 0.6 wide dual-inline

hermetically sealed ceramic side-brazed package (H

package).