ALD1701ASAL

Overview

The ALD1701ASAL is a monolithic CMOS micropower operational amplifier manufactured using Advanced Linear Devices' enhanced ACMOS silicon gate process. It features rail-to-rail input and output voltage ranges, allowing signal voltages to equal the supply rails. The device operates on dual supplies from ±1V to ±5V or single supplies from +2V to +10V. Key electrical specifications include a maximum supply current of 250µA at 5V, a unity gain bandwidth of 0.7MHz, and a slew rate of 0.7V/µs. It offers high open-loop voltage gain (typically 100V/mV) and extremely low input bias currents (1pA typical). The component is internally compensated for unity gain stability and includes output short-circuit protection.

Feature Summary

• Rail-to-rail input and output voltage capability
• Extremely low input bias current suitable for high source impedance applications
• Internally compensated for unity gain stability without external components
• Output short circuit protection

Applications

• Voltage amplifier circuits
• Photodiode amplifiers
• Data acquisition systems
• Active filters
• Picoammeters

Procurement Notes

Verify that the ordering suffix SAL corresponds to the 8-pin Small Outline Plastic DIP (SOIC) package with lead-free (RoHS) compliant terminations. Confirm the specific grade variant (A, B, or G) matches the required offset voltage and drift specifications for the application environment. Ensure static control procedures are followed during handling due to ESD sensitivity.

Selection Notes

Select this component when low power consumption and rail-to-rail signal swing are critical within a ±1V to ±5V dual supply range. The internal compensation eliminates the need for external frequency compensation capacitors, simplifying board layout. Consider the 1pA typical input bias current for interfacing with high-impedance sensors where leakage must be minimized.

Part Context

The ALD1701ASAL belongs to the ALD1701 family of micropower operational amplifiers, which also includes variants like the ALD1701APAL and ALD1701ADA. These devices share the same core architecture and pinout compatibility with industry standards such as the µA741 and ICL7611. The family is designed to provide a trade-off between performance parameters and power dissipation for portable and battery-operated analog systems.

Replacement Considerations

The datasheet notes compatibility with the µA741 and ICL7611 pin configurations. Verify if direct pin-for-pin replacement is suitable by comparing supply voltage ranges and output drive capabilities against the legacy component specifications.