ALD2701BSAL

Overview

The ALD2701BSAL is a dual monolithic CMOS micropower operational amplifier manufactured by Advanced Linear Devices, Inc. It features rail-to-rail input and output voltage ranges, making it suitable for low-voltage single or dual supply systems ranging from +2V to +10V single supply or ±1V to ±5V dual supplies. The device offers high open-loop voltage gain of up to 100 V/mV, unity gain bandwidth of 0.7 MHz, and a slew rate of 0.7 V/µs at +5V single supply. It exhibits extremely low input bias current of 1.0 pA typical and operates within an ambient temperature range of 0°C to +70°C in the SOIC-8 package.

Feature Summary

• Rail-to-rail input and output voltage capability allows signal levels to reach the positive and negative supply rails.
• Extremely low input bias current of 1.0 pA typical ensures minimal distortion for high source impedance applications.
• Internally compensated for unity gain stability without requiring external nulling resistors.
• Output short circuit protection and robust design suitable for rugged environments.

Applications

• Voltage follower/buffer/amplifier
• Photodiode amplifier
• Charge integrator
• Data acquisition systems
• Picoammeter

Procurement Notes

Verify the specific suffix 'SAL' corresponds to the 8-pin Small Outline Plastic DIP (SOIC) package with lead-free (RoHS) compliance as indicated by the 'L' suffix convention. Confirm the operating temperature range matches the commercial grade specification of 0°C to +70°C. Ensure the ordering part number aligns with the B-grade offset voltage specifications rather than A-grade or standard variants.

Selection Notes

Select this component when designing circuits requiring rail-to-rail performance on low voltage supplies such as battery-operated devices. The ALD2701BSAL provides a trade-off between micropower consumption and high slew rate compared to other CMOS amplifiers. Consider the 0.7 V/µs slew rate and 0.7 MHz bandwidth for general-purpose analog signal conditioning where high precision offset trimming is not strictly required due to internal trimming capabilities.

Part Context

The ALD2701 series includes variants ALD2701A, ALD2701B, and ALD2701, differentiated primarily by input offset voltage specifications. The ALD2701BSAL specifically denotes the B-grade version housed in an 8-pin SOIC package. This family is designed to offer industry-standard pin compatibility with µA741 and ICL7621 types while utilizing advanced ACMOS silicon gate technology for improved reliability and low power operation.

Replacement Considerations

The datasheet notes that the ALD2701A/ALD2701B/ALD2701 offers popular industry standard pin configuration compatible with µA741 and ICL7621 types. Verify if direct pin-compatible replacements are available from other manufacturers if sourcing becomes restricted, ensuring electrical parameters like rail-to-rail capability and input bias current meet the original design requirements.