AD7896BR-REEL

Overview

The AD7896BR-REEL is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.5 V supply and features an on-chip track-and-hold amplifier, internal clock, and high-speed serial interface. The device accepts a unipolar analog input range of 0 V to VDD, utilizing the supply voltage as the reference. Key electrical parameters include a maximum throughput rate of 100 kHz, a conversion time of 8 µs in high sampling mode, and typical power dissipation of 9 mW. It is housed in an 8-lead SOIC package with an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates a 12-bit SAR ADC, track-and-hold amplifier, and serial interface logic within an 8-lead package.
• Supports high-speed data acquisition with a 100 kHz throughput rate and 8 µs conversion time.
• Operates on a single supply voltage ranging from 2.7 V to 5.5 V without requiring an external reference.
• Includes an automatic power-down mode that activates after conversion to minimize energy consumption.

Applications

• Battery-powered portable instrumentation systems
• Industrial process control data acquisition
• Portable medical devices

Procurement Notes

Verify the specific suffix 'BR-REEL' against official documentation to confirm reel packaging and exact temperature grade. Ensure the source component matches the industrial operating range (-40°C to +85°C). Confirm pinout compatibility with the target PCB footprint before integration.

Selection Notes

Select this component for applications requiring a compact, low-power 12-bit ADC with a simple serial interface. It is suitable for designs where space is limited and an external voltage reference is undesirable. Consider the 100 kHz throughput limit when designing system timing constraints.

Part Context

The AD7896 series comprises fast, 12-bit ADCs available in 8-lead PDIP and SOIC packages. The BR variant specifically denotes the industrial temperature grade (-40°C to +85°C), distinguishing it from commercial or extended temperature versions within the same family.

Replacement Considerations

Direct substitutes within the AD7896 family include the AD7896ARZ (industrial grade, tube) and AD7896ANZ (commercial grade). Verify package type and temperature range compatibility when substituting.