ALD2732APAL

Overview

The ALD2732APAL is a precision dual low-power monolithic CMOS operational amplifier manufactured by Advanced Linear Devices. It features extremely low input signal power, with typical input offset voltage of 0.03 mV and input bias current of 0.01 pA at 25°C. The device operates on single supplies from +4 V to +10 V or dual supplies from ±2 V to ±5 V. Key electrical parameters include a gain-bandwidth product of 1.5 MHz, slew rate of 2.1 V/µs, supply current of 3.5 mA, and large signal voltage gain of 250 V/mV. It supports rail-to-rail input and output voltages and can drive capacitive loads up to 4000 pF.

Feature Summary

• Extremely low input signal power draw due to minimal offset voltage and bias current
• Rail-to-rail input and output voltage swing capabilities
• Robust high-temperature operation suitable for rugged environments
• Industry standard pinout compatible with µA741 and ICL7611 configurations

Applications

• Precision cable driver circuits
• Sensor interface and transducer biasing circuits
• Unity gain buffer amplifiers
• Capacitive and charge integration circuits
• Biochemical probe interfaces

Procurement Notes

Verify the specific package variant (PDIP-8) against the datasheet requirements. Confirm that the operating temperature range aligns with the application environment, as the PAL suffix indicates commercial grade (0°C to +70°C). Ensure static control procedures are followed during handling due to ESD sensitivity. Check for lead-free compliance if required by project specifications.

Selection Notes

Select this component when source loading errors must be minimized in high-impedance applications. The low input bias current makes it suitable for capacitive sources where traditional amplifiers cause distortion. Consider the rail-to-rail feature for low-voltage single-supply systems. Verify that the 1.5 MHz bandwidth meets the signal frequency requirements.

Part Context

The ALD2732APAL belongs to the ALD2732A/ALD2732 family of precision dual CMOS operational amplifiers. It utilizes an enhanced EPAD silicon gate CMOS process designed for low input signal power. The device is offered in industry-standard pin configurations to facilitate drop-in replacements for legacy designs while providing superior performance characteristics.

Replacement Considerations

The datasheet notes compatibility with µA741 and ICL7611 pin configurations. No specific substitute part numbers are provided in the documentation.