AD568JQ

Overview

The AD568JQ is a 12-bit ultrahigh-speed monolithic digital-to-analog converter (DAC) fabricated using Analog Devices’ Complementary Bipolar process. It features a high-stability buried zener reference and guarantees monotonicity over the operating temperature range of 0°C to +70°C. The device provides a 10.24 mA full-scale current output or an unbuffered voltage output, with laser-wafer trimming ensuring full 12-bit linearity. Packaged in a 24-lead ceramic dual in-line package (Cerdip), it supports variable threshold logic for TTL and CMOS interfaces.

Feature Summary

• Ultrahigh speed: Current settling to 1 LSB in 35 ns
• High stability buried zener reference on chip
• Monotonicity guaranteed over temperature
• 10.24 mA full-scale output suitable for video applications

Applications

• Waveform generation
• Graphics display
• High speed A/D conversion

Procurement Notes

Verify the component grade matches the required performance specifications. The AD568JQ is specified for operation from 0°C to +70°C. Ensure that the ordering suffix corresponds to the correct package type, which is the 24-lead Cerdip for this model number.

Selection Notes

Select the AD568JQ when a 12-bit resolution with ultrahigh-speed settling is required within a commercial temperature range. Compare against the AD568KQ for tighter linearity or the AD568SQ for extended military temperature ranges. Consider the internal span resistor usage if buffered voltage outputs are needed.

Part Context

The AD568JQ belongs to the AD568 family of ultrahigh-speed DACs. It shares the same core architecture and pinout as the AD568KQ and AD568SQ models, differing primarily in accuracy grades and temperature specifications. All variants utilize the hermetic 0.3" skinny DIP packaging.

Replacement Considerations

Public confirmed substitute part numbers only; omit otherwise.