AD7891YSZ-2

ADCs/DACs - Special Purpose Overview

The AD7891YSZ-2 is an 8-channel, 12-bit data acquisition system manufactured by Analog Devices Inc. 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 input ranges of 0 to +5 V, 0 to +2.5 V, and ±2.5 V with a maximum sample rate of 500 kSPS. The device features parallel or serial interfaces selectable via the MODE pin. It is housed in a 44-terminal MQFP package and operates within an extended temperature range of -55°C to +105°C.

ADCs/DACs - Special Purpose Feature Summary

• 8 Single-Ended Analog Input Channels
• 12-Bit Resolution with 500 kSPS Sample Rate
• Parallel and Serial Interface Options
• On-Chip Track/Hold Amplifier and 2.5 V Reference

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 'YSZ-2' against the manufacturer's ordering guide to confirm the Y version automotive temperature rating (-55°C to +105°C), Z lead-free status, and S2 MQFP package option. Confirm that the -2 designation corresponds to the unipolar/bipolar input ranges (0V to +5V, 0V to +2.5V, ±2.5V) rather than the bipolar-only -1 variant.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7891YSZ-2 for applications requiring extended industrial or automotive temperature stability (-55°C to +105°C). Ensure the analog input signals fall within the supported ranges of 0 to +5 V, 0 to +2.5 V, or ±2.5 V. Verify interface requirements; while both parallel and serial modes are supported, the maximum throughput of 500 kSPS is only achievable in parallel mode.

ADCs/DACs - Special Purpose Part Context

The AD7891YSZ-2 belongs to the AD7891 family of high-speed data acquisition systems. The 'Y' suffix denotes the automotive-grade temperature range extension compared to commercial A and B versions. The 'Z' indicates compliance with RoHS standards. This model specifically addresses applications needing robust performance across wide thermal variations while maintaining low power consumption.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes within the same family include AD7891YS-2 (non-lead-free) or AD7891ASZ-2 (commercial temperature range). For different input ranges, consider AD7891YSZ-1 which supports ±5 V and ±10 V inputs.