AD7892BR-1REEL

Overview

The AD7892BR-1REEL is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and features an on-chip track/hold amplifier with internal reference. The device supports both parallel and serial interfaces for microprocessor connection. It accepts analog input ranges of ±10 V or ±5 V, depending on the VIN2 pin configuration. The throughput rate is 500 kSPS with a conversion time of 1.6 µs. It is housed in a 24-lead SOIC package.

Feature Summary

• Integrated signal scaling allows direct handling of ±10 V or ±5 V single-ended inputs without external attenuation.
• Flexible interface architecture supports high-speed parallel data transfer or three-wire serial communication via the MODE pin.
• On-chip track/hold amplifier ensures accurate sampling at maximum throughput rates with minimal acquisition delay.

Applications

• Industrial process control systems requiring isolated voltage monitoring
• Portable instrumentation powered by single-supply batteries
• Data acquisition modules interfacing with microcontrollers

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging when sourcing components. Confirm that the 'B' version meets the required relative accuracy specifications for the application. Ensure the ordering documentation matches the exact part number to avoid confusion with other input range variants within the AD7892 family.

Selection Notes

Select this variant specifically for applications requiring ±10 V or ±5 V input ranges. Compare the 500 kSPS throughput against system timing requirements. Consider the SOIC package dimensions for PCB layout constraints. Evaluate the need for overvoltage protection if input signals may exceed specified limits.

Part Context

This component belongs to the AD7892 family of high-speed, low-power ADCs. It shares core architecture with the AD7892-2 and AD7892-3 but differs in analog input scaling capabilities. The BR-1 designation specifies the commercial temperature range and SOIC package format.

Replacement Considerations

Direct functional replacements include AD7892AR-1REEL for identical performance in different packaging. Verify compatibility with existing board layouts when substituting between DIP and SOIC formats.