AD7891AP-2REEL

ADCs/DACs - Special Purpose Overview

The AD7891AP-2REEL is an 8-channel, 12-bit data acquisition system (DAS) 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 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 features overvoltage protection on all channels.

ADCs/DACs - Special Purpose Feature Summary

• 8 Single-Ended Analog Input Channels with Overvoltage Protection
• On-Chip Track/Hold Amplifier and 2.5 V Reference
• Parallel and Serial Interface Options
• Single-Supply Operation (5 V) with Low Power Consumption

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 surface-mount assembly. Confirm the '-2' variant matches the required unipolar/bipolar input voltage ranges (0 to +2.5 V, 0 to +5 V, ±2.5 V). Check current availability status as distribution may vary.

ADCs/DACs - Special Purpose Selection Notes

Select this model for applications requiring 12-bit resolution at up to 500 kSPS sampling rate on a single channel. Ensure the interface mode (parallel vs. serial) aligns with the host microprocessor capabilities. Verify that the operating temperature range (-40°C to +85°C) meets system requirements.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7891 family of high-speed data acquisition systems. The AP package denotes a Plastic Leaded Chip Carrier (PLCC), while the REEL suffix specifies the shipping format. Other variants include AS (MQFP) packages and -1 models with different input voltage ranges.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes within the same family include AD7891BP-2REEL, which offers improved accuracy (±0.75 LSB) but shares the same package and interface characteristics.