AD7569JRZ

ADCs/DACs - Special Purpose Overview

The AD7569JRZ is a complete, monolithic 8-bit analog I/O system fabricated in LC2MOS technology. It integrates a high-speed successive approximation ADC with a 2 μs conversion time and a track/hold circuit featuring 200 kHz bandwidth. The device includes an 8-bit DAC with an output buffer amplifier providing a typical 1 μs settling time. An on-chip temperature-compensated 1.25 V bandgap reference supplies precision voltage for both converters. Digital interfacing utilizes an 8-bit parallel port compatible with standard microprocessor control lines, supporting single or dual 5 V supply configurations.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 8-bit ADC with 2 μs conversion time and 200 kHz track/hold bandwidth
• Integrated 8-bit DAC with output buffer amplifier and 1 μs typical settling time
• On-chip 1.25 V bandgap reference for ADC and DAC
• Fast bus interface with access times less than 75 ns

ADCs/DACs - Special Purpose Applications

• Microprocessor-based data acquisition systems
• Process control loops requiring integrated analog I/O
• Industrial instrumentation with direct digital interfacing

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'JRZ' against the manufacturer's ordering guide to confirm package type and temperature range. The datasheet lists 'JR' as a Small Outline SOIC package within the commercial temperature range (0°C to +70°C). Confirm RoHS compliance status and lead finish details directly with Analog Devices or authorized distributors, as suffix designations may indicate environmental compliance variations not explicitly detailed in the general specifications.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7569JRZ when a single-chip solution for 8-bit analog input and output is required to minimize board space and external component count. Ensure the application supports the specified logic levels (TTL/CMOS compatible) and power supply requirements (+5V single or ±5V dual). Verify that the 2 μs ADC conversion speed and 1 μs DAC settling time meet the system timing constraints. Consider the operating temperature range of 0°C to +70°C for the J-grade device.

ADCs/DACs - Special Purpose Part Context

The AD7569 is part of the AD7569/AD7669 family of complete analog I/O systems. The AD7569 variant features a single DAC output, whereas the AD7669 variant provides dual DAC outputs. Both share identical ADC sections and internal architecture. The device is designed to replace discrete ADC, DAC, and op-amp combinations, simplifying system design by eliminating the need for external reference voltages and user trims.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements are limited due to the proprietary LC2MOS process and integrated architecture. Review the AD7569BRZ for industrial temperature range (-40°C to +85°C) if environmental conditions exceed the J-grade limits. Cross-reference with other Analog Devices mixed-signal controllers if higher resolution or different interface protocols are required.