AD7891YPZ-1REEL

ADCs/DACs - Special Purpose Overview

The AD7891YPZ-1REEL is an 8-channel, 12-bit data acquisition system manufactured by Analog Devices Inc. It integrates a multiplexer, track/hold amplifier, high-speed ADC, and 2.5 V reference on a single chip. Operating from a single 5 V supply, it supports ±5 V or ±10 V input ranges with a maximum sample rate of 454.5 kSPS. The device features overvoltage protection up to ±17 V per channel and offers selectable parallel or serial interfaces via the MODE pin. Typical power dissipation is 82 mW in normal mode and 75 mW in standby.

ADCs/DACs - Special Purpose Feature Summary

• 8-channel multiplexed 12-bit SAR ADC with 1.6 µs conversion time
• On-chip 2.5 V reference and track/hold amplifier
• ±17 V overvoltage protection on all analog inputs
• Selectable parallel or serial interface modes

ADCs/DACs - Special Purpose Applications

• Data acquisition systems
• Motor control applications
• Mobile communication base stations
• Industrial instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the Y suffix indicates the automotive temperature range (-55°C to +105°C) and the -1 variant specifies bipolar input ranges (±5 V or ±10 V). Confirm the REEL suffix denotes tape-and-reel packaging for automated assembly. Check current availability status as this component may be subject to obsolescence notices.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7891YPZ-1REEL when bipolar input signals within ±5 V or ±10 V are required alongside extended industrial temperature operation. Ensure the system design accommodates the 5 V single-supply requirement. Choose between parallel or serial interface based on microprocessor pin availability and throughput needs, noting that serial mode limits maximum throughput to 357 kSPS.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AD7891 family of high-speed data acquisition systems. The Y version extends the operating temperature range compared to commercial A and B versions. The -1 suffix distinguishes it from the -2 variant, which supports unipolar ranges such as 0 V to +5 V. The MQFP-44 package provides a compact solution for multi-channel signal conditioning.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes include other AD7891 variants with different packages or temperature ratings, such as AD7891YS-1REEL (MQFP package) or AD7891BPZ-1REEL (PLCC package, commercial temp). Verify pin compatibility and input range specifications before substitution.