AD767

NOT RECOMMENDED FOR NEW DESIGNS

Microprocessor-Compatible 12-Bit D/A Converter

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Overview

  • Complete 12-Bit D/A Function
    On-chip Output Amplifier
    High Stability Buried Zener Reference
  • Fast 40 ns Write Pulse
  • 0.3" Skinny DIP and PLCC Packages
  • Single Chip Construction
  • Monotonicity Guaranteed Over Temperature
  • Settling time: 3 µs max to 1/2 LSB
  • Guaranteed for Operation with ±12 V or ±15 V Supplies
  • TTL/5 V CMOS Compatible Logic Inputs
  • MIL-STD-883 Compliant Versions Available

The AD767 is a complete voltage output 12-bit digital-to-analog converter including high stability buried Zener reference and input latch on a single chip. The converter uses 12 precision high-speed bipolar current steering switches and a laser-trimmed thin-film resistor network to provide high accuracy.

Microprocessor compatibility is achieved by the on-chip latch. The design of the input latch allows direct interface to 12-bit buses. The latch responds to strobe pulses as short as 40 ns, allowing use with the fastest available microprocessors.

The functional completeness and high performance of the AD767 result from a combination of advanced switch design, high-speed bipolar manufacturing process, and the proven laser wafer-trimming (LWT) technology.

The subsurface (buried) Zener diode on the chip provides a low-noise voltage reference which has long-term stability and temperature drift characteristics comparable to the best discrete reference diodes. The laser trimming process which provides the excellent linearity is also used to trim the absolute value of the reference as well as its temperature coefficient. The AD767 is thus well suited for wide temperature range performance with ±½ LSB maximum linearity error and guaranteed monotonicity over the full temperature range. Typical full-scale gain is 5 ppm/ºC.

AD767
Microprocessor-Compatible 12-Bit D/A Converter
AD767 Functional Block Diagram
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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
AD5530 PRODUCTION Serial Input, Voltage Output 12-Bit D/A Converter
AD5531 PRODUCTION Serial Input, Voltage Output14-Bit D/A Converter
AD5760 PRODUCTION Ultra Stable 16-Bit ±0.5 LSB INL, Voltage Output 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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