ADA4097-2BCPZ-RL7

Overview

The ADA4097-2BCPZ-RL7 is a dual-channel, precision operational amplifier from Analog Devices Inc. It features an ultrawide common-mode input range extending to +VS + 70 V and operates on supply voltages from +3 V to +50 V. Key electrical specifications include a typical gain bandwidth product of 130 kHz, a maximum input offset voltage of ±60 µV (B grade), and a low quiescent current of 32.5 µA per channel. The device provides rail-to-rail input and output capabilities with robust overdrive tolerance.

Feature Summary

• Over-The-Top operation allows the input common-mode voltage to exceed the positive supply rail by up to 70 V without phase reversal or damage.
• Robust construction includes high electrostatic discharge protection ratings of ±2 kV HBM and ±1.25 kV FICDM for harsh industrial environments.
• Low power consumption is achieved through a typical supply current of 32.5 µA per channel, with an optional shutdown feature reducing current to under 20 µA.

Applications

• Industrial sensor conditioning circuits
• Supply current sensing applications
• Battery and power supply monitoring systems
• Front-end amplifiers in abusive environments
• 4 mA to 20 mA transmitters

Procurement Notes

Verify that the specific B-grade suffix matches the required offset voltage drift specifications, as the datasheet distinguishes between B and H grades. Confirm the LFCSP package type corresponds to the 10-lead variant which supports the SHDNx pins. Ensure the ordering code aligns with the reel quantity specified by the manufacturer for this specific part number.

Selection Notes

Select this component when high-voltage signal processing is required above the positive supply rail. The B-grade specification ensures tighter offset voltage limits compared to standard grades. Consider the thermal resistance characteristics if operating near the upper temperature limits, as junction temperature affects long-term stability.

Part Context

This dual-channel device belongs to the ADA4097 family, designed for robust performance in single-supply and split-supply configurations. It complements the single-channel ADA4097-1 and offers integrated shutdown control in the 10-lead LFCSP package. The technology targets applications requiring precision at elevated common-mode potentials.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

FAQ

How does the Over-The-Top input stage function?

The amplifier utilizes a common base input stage consisting of PNP transistors that activate when the common-mode input exceeds +VS - 1 V, allowing operation up to +VS + 70 V.

What is the input bias current behavior during Over-The-Top operation?

In the Over-The-Top region, the input bias current increases significantly to approximately 0.8 µA due to the activation of the common base differential pair.