ADA4500-2ACPZ-RL

Overview

The ADA4500-2ACPZ-RL is a dual-channel precision operational amplifier manufactured by Analog Devices Inc. It features a 10 MHz gain bandwidth product and a 14.5 nV/√Hz voltage noise density at 1 kHz. The device operates on a single supply from 2.7 V to 5.5 V or dual supplies of ±1.35 V to ±2.75 V. Key electrical specifications include a maximum input offset voltage of 120 μV, a maximum input bias current of 2 pA, and a minimum power supply rejection ratio of 98 dB. It utilizes an 8-lead LFCSP package.

Feature Summary

• Employs a zero-crossover distortion circuit topology to maintain high linearity across the full rail-to-rail input common-mode range without traditional complementary stage distortion.
• Features rail-to-rail input and output capabilities, allowing signal swings close to the supply rails to maximize dynamic range in analog-to-digital converter driving applications.
• Integrates an internal charge pump within the input structure to enable wide-range input signal handling while maintaining very low input bias currents.

Applications

• Pressure and position sensors
• Medical monitors
• Process controls
• Photodiode applications

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm availability status with authorized distributors as supply may be restricted. Ensure the component meets required RoHS compliance standards for your manufacturing process before finalizing procurement orders.

Selection Notes

Select this component when high DC precision and wide bandwidth are required simultaneously. It is suitable for applications demanding low noise and minimal crossover distortion over a full rail-to-rail input range. Consider the extended industrial temperature range and low power consumption for portable or battery-operated instrumentation designs.

Part Context

This part belongs to the ADA4500-2 series of dual high-performance zero-crossover op amps. It is designed to replace older precision amplifiers that suffer from crossover distortion near the supply rails. The device is compatible with industry-standard nominal voltages including +3.0 V, +3.3 V, +5.0 V, and ±2.5 V.

Replacement Considerations

Check pin compatibility with existing designs. Verify if alternative packages like MSOP are acceptable substitutes if LFCSP is unavailable.

FAQ

How does the ADA4500-2 eliminate crossover distortion?

It uses an on-chip charge pump to power the input differential pair, allowing it to handle a wide range of input signal voltages without switching between two differential pairs.

What is the input voltage range capability?

The inputs operate rail-to-rail and can function up to 200 mV beyond the supply rails.