DAC811AH

Product Summary

The DAC811 is a complete, single-chip integratedcircuit, microprocessor-compatible, 12-bit digital-toanalogconverter. 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 alaser-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 three4-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 inadjacent 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,K, and S grades) at 25°C and ±1/2LSB maximum overthe 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;DAC811R and S are specified over –55°C to +125°C.
DAC811J and K are packaged in a reliable 28-pin plastic DIP or plastic SOIC package, while DAC811A,B, R and S are available in a 28-pin 0.6" wide dualinline hermetically sealed ceramic side-brazed package (H package).

Parametrics

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