ALD1703SAL

Overview

The ALD1703SAL is a monolithic CMOS operational amplifier manufactured using Advanced Linear Devices' enhanced ACMOS silicon gate process. It features rail-to-rail input and output voltage ranges, making it suitable for +5V single supply or ±2.5V dual supply systems. Key electrical specifications include a unity gain bandwidth of 1.5MHz, a slew rate of 2.1V/µs, and an extremely low typical input bias current of 1.0pA. The device offers high voltage gain, typically 85V/mV at ±2.5V, and is internally compensated for unity gain stability without requiring external components.

Feature Summary

• Rail-to-rail input and output voltage ranges allow implementation of numerous analog serial stages without losing operating voltage margin.
• Extremely low input bias currents of 1.0pA typical make the device ideal for high source impedance applications.
• Internally compensated for unity gain stability with no frequency compensation required.
• High load capacitance capability allows driving up to 4000pF typical load capacitance.

Applications

• Voltage amplifier
• Photodiode amplifier
• Data acquisition systems
• Active filters
• Picoammeter

Procurement Notes

Verify the specific suffix 'SAL' corresponds to the 8-pin Small Outline Plastic Dip (SOIC) package with lead-free (RoHS) compliant terminations as defined in the ordering information. Confirm that the component meets the specified operating temperature range of 0°C to +70°C for this package variant. Ensure static control procedures are followed during handling due to ESD sensitivity.

Selection Notes

Select the ALD1703SAL when designing circuits for +5V single supply or ±2.5V dual supply systems requiring rail-to-rail signal swing. This component is appropriate for applications demanding extremely low input bias currents, such as high-impedance sensor interfaces. Consider its internal compensation and high capacitive drive capability for stable buffer configurations without external feedback components.

Part Context

The ALD1703 is part of the ALD1702 family of precision operational amplifiers from Advanced Linear Devices. This family shares a common pin configuration compatible with µA741 and ICL7611 types. The ALD1703 variant specifically targets general-purpose analog applications within the 5V supply ecosystem, offering a balance of performance parameters including low power dissipation and robust operation in temperature-extreme environments.

Replacement Considerations

The datasheet lists the ALD1702SAL as a similar part number within the same product family. Verify functional equivalence regarding offset voltage and bias current specifications before substitution, as variations may exist between the ALD1702 and ALD1703 designations.