AD7891APZ-2REEL

ADCs/DACs - Special Purpose Overview

The AD7891APZ-2REEL is an 8-channel, 12-bit data acquisition system from Analog Devices. It integrates a multiplexer, track/hold amplifier, ADC, and 2.5 V reference on a single chip. Operating from a single 5 V supply, it supports input ranges of 0 to +2.5 V, 0 to +5 V, and ±2.5 V. The device offers parallel or serial interfaces selectable via the MODE pin. Key electrical parameters include a 1.6 µs conversion time, 500 kSPS sample rate for single-channel operation, and typical power dissipation of 82 mW in normal mode. It features overvoltage protection on all channels.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 8-channel multiplexer with overvoltage protection
• Selectable input ranges: 0–2.5 V, 0–5 V, and ±2.5 V
• Parallel and serial interface modes via MODE pin
• On-chip 2.5 V reference and track/hold amplifier

ADCs/DACs - Special Purpose Applications

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

ADCs/DACs - Special Purpose Procurement Notes

Verify the suffix 'REEL' indicates tape-and-reel packaging. Confirm the 'Z' suffix denotes lead-free compliance. Check current availability status as distribution may vary. Ensure the specific -2 version matches the required unipolar/bipolar input range configuration.

ADCs/DACs - Special Purpose Selection Notes

Select this model for applications requiring 8 analog inputs with 12-bit resolution. Choose the -2 variant specifically for 0–2.5 V, 0–5 V, or ±2.5 V input ranges. Use the REEL package option for automated surface-mount assembly. Verify interface requirements (parallel vs. serial) before finalizing selection.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7891 family of high-speed data acquisition systems. The APZ designation refers to the Plastic Leaded Chip Carrier (PLCC) package with lead-free termination. The -2 suffix specifies the supported input voltage ranges compared to the -1 version which supports ±5 V and ±10 V ranges.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes within the same family include AD7891AP-2 (non-Z, non-reel) and AD7891BP-2 (higher accuracy). For MQFP packages, consider AD7891ASZ-2REEL. Cross-family replacements require verification of pin compatibility and performance specifications.