AD7891AP-1REEL

ADCs/DACs - Special Purpose Overview

The AD7891AP-1REEL is an 8-channel, 12-bit data acquisition system manufactured by Analog Devices Inc. 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 ±5 V or ±10 V input ranges with a maximum sample rate of 454 kSPS. The device features a selectable parallel or serial interface via the MODE pin. Typical power consumption is 82 mW in normal mode and 75 mW in standby. It is housed in a 44-lead PLCC package.

ADCs/DACs - Special Purpose Feature Summary

• 8-channel multiplexed 12-bit SAR ADC with overvoltage protection
• On-chip 2.5 V reference and track/hold amplifier
• Selectable parallel or serial interface modes
• Single 5 V supply operation with low power consumption

ADCs/DACs - Special Purpose Applications

• Data Acquisition Systems
• Motor Control
• Instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging for this part number. Confirm the 'A' version accuracy class matches design requirements. Check current availability status as older components may have limited stock or end-of-life implications.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7891AP-1REEL for applications requiring bipolar input ranges (±5 V or ±10 V). Ensure the interface mode (parallel vs. serial) aligns with the host processor capabilities. Consider the PLCC-44 package constraints for PCB layout. Verify thermal dissipation limits within the operating temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7891 family of high-speed data acquisition systems. The 'AP' designation indicates a Plastic Leaded Chip Carrier (PLCC) package, while '-1' specifies the bipolar input range variant. The 'REEL' suffix denotes the specific shipping configuration.

ADCs/DACs - Special Purpose Replacement Considerations

Direct substitutes include other AD7891 variants with different packages or accuracy grades, such as AD7891BP-1REEL (B version accuracy) or AD7891YSZ-1REEL (MQFP package, extended temp). Cross-model replacements like ADS7891 require significant circuit redesign due to differing specifications.