ALD1701GSAL

Overview

The ALD1701GSAL is a micropower rail-to-rail CMOS operational amplifier manufactured by Advanced Linear Devices. It features a unity gain bandwidth of 1MHz and a slew rate of 1V/µs at ±5V supply. The device operates on single supplies from +2V to +12V or dual supplies from ±1V to ±6V, with a maximum supply current of 120µA. Input bias current is typically 1pA, and input offset voltage is specified at 10mV. It provides high open-loop voltage gain and drives loads up to 10kΩ. The component is housed in an 8-SOIC surface-mount package and supports an operating temperature range of 0°C to 70°C.

Feature Summary

• Rail-to-rail input and output voltage ranges enable full signal swing across the supply rails.
• Extremely low input bias currents minimize signal distortion in high source impedance applications.
• Internally compensated for unity gain stability without requiring external frequency compensation components.
• Output stage includes short circuit protection and can drive capacitive loads up to 50pF.

Applications

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

Procurement Notes

Verify that the specific part number matches the required package type and temperature rating. Confirm RoHS compliance status if lead-free construction is mandatory for the assembly process. Ensure the supplier provides traceability documentation consistent with the manufacturer's ordering suffix definitions. Validate that the delivered units correspond to the exact electrical specifications outlined in the official datasheet.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside wide dynamic input and output voltage swings. It is suitable for battery-operated systems where minimizing supply current is critical. Consider its high input impedance for interfacing with sensors that have limited current sourcing capabilities. Verify that the required bandwidth and slew rate meet the signal processing demands of the application.

Part Context

This device belongs to the ALD1701 family of micropower operational amplifiers. Variants such as the ALD1701A and ALD1701B offer different offset voltage grades. The GSAL suffix indicates a plastic SOIC surface-mount package with lead-free (RoHS) compliant terminations. The family shares a common pinout compatible with legacy µA741 and ICL7611 configurations.

Replacement Considerations

Direct replacements include other parts from the ALD1701 series with adjusted offset grades. Cross-reference pinouts with standard op-amp packages to ensure mechanical compatibility. Verify that alternative devices maintain similar rail-to-rail input/output characteristics and low bias current requirements.

FAQ

Does the ALD1701GSAL require external frequency compensation?

No, the device is internally compensated for unity gain stability and does not require external compensation components.

What is the typical input bias current for this operational amplifier?

The typical input bias current is 1.0pA at room temperature, which minimizes loading effects on high impedance sources.