AD7890BRZ-4REEL

ADCs/DACs - Special Purpose Overview

The AD7890BRZ-4REEL is an 8-channel, 12-bit data acquisition system fabricated in LC2MOS technology. 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 a unipolar input range of 0 V to 4.096 V with a maximum conversion time of 5.9 μs. The device features a high-speed serial interface and operates within a commercial temperature range of -40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Integrated 8-channel multiplexer with separate MUX OUT access for external antialiasing filtering
• On-chip 2.5 V voltage reference with external reference input capability
• High-speed bidirectional serial interface compatible with microcontrollers and DSPs
• Low power consumption: 30 mW typical in normal mode, 75 μW typical in standby

ADCs/DACs - Special Purpose Applications

• Industrial process control systems requiring multi-channel signal acquisition
• Data acquisition modules for factory automation and monitoring
• Embedded measurement systems interfacing with digital signal processors

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix '4' confirms the 0 V to 4.096 V input range. Confirm the 'BRZ' designation indicates the SOIC_W package and lead-free composition. Ensure the 'REEL' suffix matches the required tape-and-reel packaging quantity for surface-mount assembly processes.

ADCs/DACs - Special Purpose Selection Notes

Select this variant specifically for applications requiring a 0 V to 4.096 V input span. For bipolar ±10 V inputs, use the AD7890-10 version. For lower voltage ranges, consider the AD7890-2. Verify that the SOIC_W package fits the PCB footprint and thermal requirements compared to the PDIP or CERDIP options.

ADCs/DACs - Special Purpose Part Context

This component belongs to the AD7890 family of monolithic data acquisition systems. The BRZ-4REEL designation specifies the B-grade performance (±0.5 LSB relative accuracy), the SOIC_W package, the 4-series input range, and reel packaging. It shares the core architecture with the AN and SQ variants but differs in package type and operating temperature specifications.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements include other AD7890 variants such as AD7890ARZ-4 or AD7890ANZ-4, provided the input range and package match. Cross-vendor equivalents are not explicitly documented in the source material.