DAC8408

NOT RECOMMENDED FOR NEW DESIGNS

Quad 8-Bit Multiplying CMOS D/A Converter with Memory

Data Sheet (Rev. A) Product Selection Table
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Overview

  • Four DACs in a 28 Pin, 0.6 Inch Wide DIP or 28-Pin JEDEC Plastic Chip Carrier
  • ±1/4 LSB Endpoint Linearity
  • Guaranteed Monotonic
  • DACs Matched to Within 1%
  • Microprocessor Compatible
  • Read/Write Capability (with Memory)
  • TTL/CMOS Compatible
  • Four-Quadrant Multiplication
  • Single-Supply Operation (+5 V)
  • Low Power Consumption
  • Latch-Up Resistant

The DAC8408 is a monolithic quad 8-bit multiplying digital-to-analog CMOS converter. Each DAC has its own reference input, feedback resistor, and onboard data latches that feature read/write capability. The readback function serves as memory for those systems requiring self-diagnostics.

A common 8-bit TTL/CMOS compatible input port is used to load data into any of the four DAC data-latches. Control lines DS1, DS2, and A/B determine which DAC will accept data. Data loading is similar to that of a RAMs write cycle. Data can be read back onto the same data bus with control line R/W. The DAC8408 is bus compatible with most 8-bit microprocessors, including the 6800, 8080, 8085, and Z80. The DAC8408 operates on a single +5 volt supply and dissipates less than 20 mW. The DAC8408 is manufactured using PMI's highly stable, thin-film resistors on an advanced oxide-isolated, silicon-gate, CMOS process. PMI's improved latch-up resistant design eliminates the need for external protective Schottky diodes.

APPLICATIONS

  • Voltage Set Points in Automatic Test Equipment
  • Systems Requiring Data Access for Self-Diagnostics
  • Industrial Automation
  • Multichannel Microprocessor-Controlled Systems
  • Digitally Controlled Op Amp Offset Adjustment
  • Process Control
  • Digital Attenuators
DAC8408
Quad 8-Bit Multiplying CMOS D/A Converter with Memory
DAC8408 Functional Block Diagram
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Documentation

Data Sheet 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
AD7564
PRODUCTION +3.3 V/+5 V, Low Power, Quad 12-Bit CMOS DAC
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Tools & Simulations

Precision DAC Error Budget Tool

The Precision DAC Error Budget Tool is a web application that calculates the DC Accuracy of precision DAC signal chains. It shows how the static errors accumulate throughout your signal chain to quickly evaluate the design tradeoffs. Calculations include the DC errors introduced by Voltage References, Operation Amplifiers and Precision DACs.

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