ADA4500-2ARMZ

Overview

The ADA4500-2ARMZ is a dual-channel precision operational amplifier featuring rail-to-rail input and output capabilities. It 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 parameters include a gain bandwidth product of 10 MHz, an offset voltage maximum of 120 μV at 25°C, and a voltage noise density of 14.5 nV/√Hz at 1 kHz. The device maintains very low input bias current with a maximum of 2 pA at 25°C. It is housed in an 8-lead MSOP package.

Feature Summary

• Eliminates crossover distortion across the full supply range using a novel zero-crossover distortion circuit topology.
• Provides high linearity over the complete rail-to-rail input common-mode range.
• Maintains excellent power supply rejection ratio (PSRR) and common-mode rejection ratio (CMRR) performance.

Applications

• Pressure and position sensors
• Remote security systems
• Medical monitors
• Process controls
• Photodiode applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the component meets all required environmental standards and RoHS compliance details before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high precision and wide bandwidth within low-voltage single-supply environments. The rail-to-rail I/O capability maximizes dynamic range when driving analog-to-digital converters. Ensure the design accommodates the specified operating temperature range of -40°C to +125°C.

Part Context

This part belongs to the ADA4500-2 series of dual amplifiers manufactured by Analog Devices Inc. It is designed for precision sensor signal conditioning and ADC driving applications where maintaining accuracy across the full input voltage swing is critical.

Replacement Considerations

Consult the official datasheet ordering guide for confirmed substitute part numbers. Verify pin compatibility and electrical parameter alignment before considering any alternative components.

FAQ

How does the ADA4500-2 eliminate crossover distortion?

It employs an on-chip charge pump in its input structure to power the differential pair, allowing the input stage to handle a wide range of input signal voltages without using a second differential pair.

What is the input voltage range specification?

The inputs continue to operate up to 200 mV beyond the supply rails, providing a true rail-to-rail input capability.