Texas Instruments DAC811JU

PARALLEL WORD INPUT LOADING 3 us SETTLING TIME 12-BIT DAC PDSO28

12-bit Digital-to-Analog Converter w/Parallel Interface 28-SOIC 0 to 70

Converters - Digital to Analog (DAC) Mcrprcsr-Compatible 12-Bit

DAC 1-CH R-2R 12-bit 28-Pin SOIC Tube

The DAC811 is a complete, single-chip integrated-circuit, microprocessor-compatible, 12-bit digital-to analog converter. The chip combines a precision volt-age reference, microcomputer interface logic, and double-buffered latch, in a 12-bit D/A converter witha voltage output amplifier. Fast current switches and a laser-trimmed thin-film resistor network provide ahighly accurate and fast D/A converter. Microcomputer interfacing is facilitated by a double-buffered latch. The input latch is divided into three 4-bit nibbles to permit interfacing to 4-, 8-, 12-, or16-bit buses and to handle right-or left-justified data. The 12-bit data in the input latches is transferred to theD/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 andis specified to +-1/4LSB maximum linearity error (B and K grades) at 25oC 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 grade sand three package types. DAC811J and K are specified over the temperature ranges of 0oC to +70oC;DAC811A and B are specified over -25oC to +85oC; 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-inlinehermetically sealed ceramic side-brazed package (H package).