AD7892BR-3REEL

Overview

The AD7892BR-3REEL is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in Analog Devices' LC2MOS process. It operates from a single +5 V supply and achieves a throughput rate of 600 kSPS with a conversion time of 1.47 µs. The device features an internal +2.5 V reference, an on-chip track/hold amplifier, and flexible serial or parallel interfaces. It accepts a bipolar analog input range of ±2.5 V and includes overvoltage protection up to ±7 V. Packaged in a 24-lead SOIC, it consumes typically 60 mW during normal operation.

Feature Summary

• Integrates a high-speed 12-bit SAR ADC with an on-chip track/hold amplifier and internal voltage reference for simplified system design.
• Supports both parallel and serial digital interfaces to accommodate various microprocessor and DSP connection requirements.
• Provides robust analog input handling with signal scaling for ±2.5 V ranges and built-in overvoltage protection.

Applications

• Portable instrumentation systems requiring low power consumption and single-supply operation.
• Industrial data acquisition systems utilizing serial communication protocols.
• Battery-powered measurement devices needing high accuracy and fast sampling rates.

Procurement Notes

Verify the specific suffix REEL indicates tape-and-reel packaging when sourcing this component. Confirm that the BR variant meets the required ±1 LSB relative accuracy specification for your application. Ensure the ordering documentation explicitly references the AD7892BR-3 model to guarantee the correct 600 kSPS speed grade and ±2.5 V input range configuration.

Selection Notes

Select the AD7892BR-3REEL when a 600 kSPS sampling rate and ±2.5 V input range are required. Choose this part over the AD7892-1 or AD7892-2 variants if the application involves bipolar signals within the ±2.5 V window rather than wider ranges like ±10 V or unipolar 0 V to +2.5 V. The BR version offers tighter linearity specifications compared to the BN version.

Part Context

This component belongs to the AD7892 family of single-supply, 12-bit ADCs. The family includes variants with different input ranges (±10 V, ±5 V, 0–2.5 V, ±2.5 V) and speed grades (500 kSPS, 600 kSPS). The AD7892BR-3 specifically denotes the B-grade accuracy, -3 speed/input range combination, packaged in SOIC format.

Replacement Considerations

AD7892ARZ-3REEL