ALD1722PAL

Overview

The ALD1722PAL is a monolithic precision low power CMOS operational amplifier in an 8-pin Plastic DIP package. It operates on a single supply of 4V to 10V or dual supplies of ±2V to ±5V. Key electrical characteristics include a typical input offset voltage of 25μV, input bias current of 0.01pA, and bandwidth of 1.5MHz at ±2.5V. The device features rail-to-rail input and output capabilities, a slew rate of 2.1 V/μs, and can drive up to 4000pF capacitive loads at a gain of 5. Operating temperature range is 0°C to +70°C.

Feature Summary

• Extremely low input signal power draw due to minimal input bias current and offset voltage
• Rail-to-rail large signal input and output voltage ranges
• Robust high-temperature operation suitable for rugged environments
• Capable of driving large capacitive loads without external compensation

Applications

• Precision cable driver
• Sensor interface circuits
• Unity gain buffer amplifier
• Biochemical probe interface
• High source impedance electrode amplifiers

Procurement Notes

Verify the specific suffix 'PAL' corresponds to the 8-pin Plastic DIP package with a 0°C to +70°C operating temperature range. Confirm RoHS compliance status as indicated by the 'L' suffix in the ordering information. Ensure static control procedures are followed during handling due to ESD sensitivity. Check for availability of leaded versions if non-RoHS requirements apply.

Selection Notes

Select this component for applications requiring ultra-low input loading effects and high signal integrity from high-impedance sources. The rail-to-rail capability allows operation in low power supply environments. Consider the 1.5MHz bandwidth and 2.1 V/μs slew rate for signal conditioning needs. Verify that the 0°C to +70°C temperature range meets environmental requirements.

Part Context

The ALD1722 series includes variants such as ALD1722SAL (SOIC) and ALD1722DA (CERDIP). The ALD1722G denotes a version optimized for wider temperature ranges. All variants share the same μA741 and ICL7611 industry-standard pin configuration. The PAL variant specifically refers to the plastic DIP packaging option within this family.

Replacement Considerations

Direct substitutes may include other precision CMOS op-amps with similar rail-to-rail inputs and low bias currents. Verify pin compatibility with standard 8-pin DIP packages. Ensure replacement devices meet the 0.01pA input bias current specification for equivalent source loading performance.