ALD2711BPAL

Overview

The ALD2711BPAL is a dual micropower precision rail-to-rail CMOS operational amplifier manufactured by Advanced Linear Devices Inc. It operates on single supplies from +2V to +10V or dual supplies of ±1V to ±5V, with typical supply current at 200µA for a 5V supply. The device features an input common-mode range extending 300mV beyond the rails and output swing within 2mV of the supply rails under high-impedance loads. Key electrical parameters include a unity-gain bandwidth of 700kHz at ±5V, a slew rate of 0.7V/µs, and extremely low input bias currents typically below 0.01pA. It is housed in an 8-pin plastic DIP package.

Feature Summary

• Rail-to-rail input and output capability allowing signal voltages to reach power supply limits without phase reversal.
• Linear mode operation maintained even when input voltages exceed supply rails by up to 300mV.
• Extremely low input bias current ensuring minimal distortion of analog signals from high-impedance sources.
• Internal offset voltage trimming eliminates the need for external nulling circuits in most applications.

Applications

• Photodiode amplifiers
• Picoammeters
• High-performance portable instruments
• Active filters

Procurement Notes

Verify that the ordering suffix 'PAL' corresponds to the lead-free (RoHS) compliant version in the 8-pin PDIP package. Confirm the specific grade (A, B, or standard) matches the required offset voltage specifications. Ensure static control procedures are followed during handling due to ESD sensitivity.

Selection Notes

Select this component for designs requiring low power consumption alongside high input impedance and wide common-mode voltage ranges. It is suitable for battery-operated systems where signal swings must utilize the full available supply voltage. Consider the internal switching point near the positive rail if using unity gain buffer configurations.

Part Context

This part belongs to the ALD2711 family of dual micro-power precision operational amplifiers. It utilizes Advanced Linear Devices' enhanced ACMOS silicon gate process. The family includes variants such as ALD2711ASAL and ALD2711ADA, offering different temperature ranges and package types like SOIC and CERDIP.

Replacement Considerations

ALD2711APAL

FAQ

Does the ALD2711BPAL support input voltages outside the supply rails?

Yes, the device allows linear mode operation with input voltages extending 300mV beyond the positive and negative supply rails without adverse effects or phase reversals.

What is the maximum capacitive load the output can drive?

The output stage is designed to typically drive capacitive loads up to 50pF and resistive loads up to 10kΩ.