AD7891YSZ-1REEL

ADCs/DACs - Special Purpose Overview

The AD7891YSZ-1REEL is an automotive-grade, 8-channel, 12-bit data acquisition system manufactured by Analog Devices. It integrates a multiplexer, track/hold amplifier, SAR 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 overvoltage protection up to ±17 V. The device offers selectable parallel or serial interfaces via the MODE pin. Key electrical parameters include a maximum conversion time of 1.6 µs, a typical power dissipation of 82 mW in normal mode, and a standby power consumption of 75 mW. It guarantees no missing codes at 12 bits resolution.

ADCs/DACs - Special Purpose Feature Summary

• Automotive grade Y version operating temperature range of -55°C to +105°C
• Integrated 8-channel multiplexer with break-before-make operation
• On-chip 2.5 V reference voltage with external reference capability
• Selectable parallel or serial interface structure controlled by MODE pin

ADCs/DACs - Special Purpose Applications

• Data Acquisition Systems
• Motor Control
• Mobile Communication Base Stations
• Instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging for automated assembly. Confirm the 'Y' designation corresponds to the extended automotive temperature range (-55°C to +105°C) rather than commercial grades. Ensure the '-1' variant matches the required bipolar input voltage ranges (±5 V or ±10 V). Check current availability status as older revisions may have limited stock.

ADCs/DACs - Special Purpose Selection Notes

Select this part when an integrated solution for multi-channel signal conditioning is required without external muxes or references. Choose the parallel interface for higher throughput needs up to 500 kSPS, noting that serial mode limits throughput to 357 kSPS. Ensure the input signal range aligns with the AD7891-1 specifications if bipolar inputs are necessary. Consider the 44-pin MQFP package dimensions for PCB layout constraints.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7891 family of high-speed data acquisition systems. The AD7891YSZ-1REEL specifically denotes the Y-temperature grade variant packaged in a 44-lead MQFP format and supplied in a reel. Other variants include the A and B versions for commercial temperatures and PLCC packages. The 'Z' suffix indicates lead-free compliance.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes within the same family include AD7891YS-1 (tube packaging) or AD7891YP-1 (PLCC package). For different temperature grades, AD7891ASZ-1 or AD7891BSZ-1 are available but operate only from -40°C to +85°C. No functional equivalents from other manufacturers are confirmed in the provided documentation.