AD7892ARZ-3REEL7

Overview

The AD7892ARZ-3REEL7 is a 12-bit successive approximation analog-to-digital converter (ADC) fabricated in LC2MOS technology. It operates from a single +5 V supply and achieves a throughput rate of 600 kSPS with a conversion time of 1.47 µs and an acquisition time of 200 ns. The device features an internal +2.5 V reference, an on-chip track/hold amplifier, and overvoltage protection allowing inputs up to ±7 V. It accepts a bipolar input range of ±2.5 V and provides flexible parallel or serial data output interfaces.

Feature Summary

• Integrated signal scaling for direct handling of ±2.5 V analog inputs without external attenuation
• Versatile interface logic supporting both high-speed parallel and three-wire serial connections
• On-chip track/hold amplifier ensures accurate sampling at maximum throughput rates
• Internal voltage reference eliminates the need for external components in standard configurations

Applications

• Industrial process control systems requiring isolated signal conditioning
• Portable instrumentation powered by single-supply batteries
• Data acquisition modules interfacing with microcontrollers via serial ports
• Vibration monitoring and acoustic sensing applications

Procurement Notes

Verify that the specific suffix 'REEL7' corresponds to the tape-and-reel packaging format required for automated surface-mount assembly. Confirm the 'A' grade designation meets the specified temperature range and accuracy requirements for the target environment before finalizing procurement orders.

Selection Notes

Select this component when a single-supply operation is mandatory alongside high-speed conversion capabilities. The AD7892-3 variant is specifically designed for bipolar ±2.5 V input ranges. Ensure the system design accommodates the 60 mW power dissipation typical for normal operation modes.

Part Context

This part belongs to the AD7892 family of fast, low-power ADCs. The 'AR' package code indicates a 24-lead Small Outline Integrated Circuit (SOIC). The '3' suffix specifies the ±2.5 V input range and 600 kSPS speed class, distinguishing it from the ±10 V/±5 V (AD7892-1) or unipolar (AD7892-2) variants.

Replacement Considerations

The AD7892BRZ-3REEL serves as a functional equivalent within the same product line, offering identical electrical performance but potentially differing in relative accuracy specifications.