AD7569TQ

Specialized Overview

The AD7569TQ is an 8-bit analog I/O system on a single monolithic chip, featuring a successive approximation ADC with 2 μs conversion time and a DAC with 1 μs settling time. It includes a track/hold with 200 kHz bandwidth and an on-chip bandgap reference. The device supports unipolar (0 to +1.25 V or 0 to +2.5 V) and bipolar (±1.25 V or ±2.5 V) ranges via the RANGE pin. It operates on single or dual 5 V supplies, uses an 8-bit parallel interface, and functions within a temperature range of -55°C to +125°C.

Specialized Feature Summary

• Complete analog I/O system integrating ADC, DAC, track/hold, and output amplifier on one chip.
• Fast microprocessor interface with bus access times less than 75 ns.
• On-chip temperature-compensated bandgap reference for precision voltage generation.
• Configurable input/output voltage ranges selectable via hardware pins.

Specialized Applications

• Microprocessor-based data acquisition systems requiring integrated analog interfaces.
• Industrial control applications needing fast sampling and precise signal conditioning.
• Embedded systems utilizing standard 8-bit microprocessors for real-time monitoring.

Specialized Procurement Notes

Verify the specific suffix TQ corresponds to the Cerdip package and extended temperature range (-55°C to +125°C) as listed in the ordering guide. Confirm availability through authorized Analog Devices distributors, as this component may be subject to limited supply status. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS technology.

Specialized Selection Notes

Select the AD7569TQ when an 8-bit resolution with high-speed conversion (2 μs) and fast DAC settling (1 μs) is required. Choose this model over the AD7669 if only a single DAC output is needed. Ensure the application requires the extended industrial temperature range and the specific Cerdip packaging format provided by the TQ suffix.

Specialized Part Context

The AD7569TQ belongs to the AD7569/AD7669 family of complete analog I/O systems fabricated in Linear-Compatible CMOS (LC2MOS). This series provides a monolithic solution for interfacing microprocessors to the analog world, eliminating the need for external components or user trims. The TQ variant specifically denotes the extended temperature grade and Cerdip package option.

Specialized Replacement Considerations

The AD7569SQ is a direct functional substitute within the same family, offering identical electrical specifications and extended temperature range but housed in a Plastic DIP package instead of Cerdip. Verify pin compatibility and package dimensions before substitution.