ADA4099-2HCPZ

Overview

The ADA4099-2HCPZ is a dual-channel, precision operational amplifier manufactured by Analog Devices Inc. It features an Over-The-Top input architecture allowing operation from −VS to +VS and beyond, independent of the positive supply rail. The device supports a wide power supply voltage range of 3.15 V to 50 V and operates within an extended temperature range of −55°C to +150°C. Key electrical characteristics include a gain bandwidth product of 8 MHz, a slew rate of 5.5 V/µs, and a maximum input offset voltage of ±40 µV. It incorporates low power shutdown functionality and robust ESD protection.

Feature Summary

• Over-The-Top input stage enables signal detection even when biased above the positive supply voltage
• Robust design with high electrostatic discharge tolerance for abusive industrial environments
• Low power shutdown capability reduces system consumption during inactive periods
• Unity-gain stable with rail-to-rail output swing capabilities

Applications

• Industrial sensor signal conditioning
• Supply current sensing applications
• Battery and power supply monitoring systems
• Front-end amplifiers in harsh operating conditions
• 4 mA to 20 mA transmitter circuits

Procurement Notes

Verify the specific H-grade suffix against the manufacturer's official ordering guide to confirm the extended temperature rating and performance specifications. Ensure compatibility with the required package type and pin configuration for your PCB layout. Cross-reference the datasheet revision to confirm all electrical parameters match your design requirements before finalizing procurement decisions.

Selection Notes

Select this component for designs requiring high common-mode voltage ranges exceeding standard supply rails. Consider the 8 MHz bandwidth and 5.5 V/µs slew rate for moderate-speed signal processing tasks. Evaluate the thermal resistance characteristics if operating near the upper limits of the specified temperature range or under heavy load conditions.

Part Context

This part belongs to the ADA4099 family of robust, precision operational amplifiers designed for demanding industrial applications. The dual-channel variant provides two independent amplifiers in a single package, offering space efficiency compared to using separate single-channel devices. The family emphasizes stability and accuracy over wide voltage and temperature variations.

Replacement Considerations

Consult the manufacturer's related products section for direct functional equivalents. Verify pinout compatibility and electrical parameter overlaps before substituting with other dual-channel precision amplifiers from different manufacturers.

FAQ

What is the maximum differential input voltage the ADA4099-2 can withstand?

The inputs can be differentially overdriven up to 80 V without damage.

How does the Over-The-Top feature benefit circuit design?

It allows the input common-mode voltage to exceed the positive supply voltage, enabling ground sensing and high-side current measurement without level shifting.

Is the ADA4099-2 unity-gain stable?

Yes, the device is unity-gain stable and can drive capacitive loads up to 100 pF.