ALD1721GPAL

Overview

The ALD1721GPAL is a monolithic CMOS micropower high slew rate operational amplifier from Advanced Linear Devices Inc. It features rail-to-rail input and output voltage ranges, making it suitable for low supply environments. The device operates on single supplies of +5V or dual supplies ranging from ±1V to ±5V. Key electrical specifications include a typical unity gain bandwidth of 0.7 MHz and a slew rate of 0.7 V/µs at ±2.5V. Input characteristics are defined by a typical offset voltage of 0.05 mV and bias current of 0.01 pA. The component is housed in an 8-pin Small Outline Plastic DIP (SOIC) package.

Feature Summary

• Extremely low input signal power draw with minimal source loading effects
• Rail-to-rail large signal input and output voltage capabilities
• Robust design suitable for temperature-extreme environments
• Internally compensated for unity gain stability without external components

Applications

• Photodiode amplifiers
• Picoammeters
• Charge integrators
• High performance portable instruments
• Data acquisition systems

Procurement Notes

Verify the specific suffix 'G' indicates lead-free RoHS compliance as per manufacturer ordering information. Confirm the 'PAL' designation corresponds to the 8-pin SOIC package variant rather than standard PDIP. Ensure the application environment remains within the specified operating temperature range of 0°C to +70°C for this package type. Validate that supply voltages do not exceed absolute maximum ratings during transient conditions.

Selection Notes

Select this component when extremely low input bias currents and high input impedance are critical for signal integrity. The rail-to-rail capability allows operation in low voltage single-supply systems where headroom is limited. Consider the 0.7 MHz bandwidth and 0.7 V/µs slew rate for applications requiring moderate speed with high precision. Verify that the load requirements stay within the specified resistive and capacitive drive limits.

Part Context

This part belongs to the ALD1721 series of precision micro-power CMOS operational amplifiers. The 'G' suffix denotes lead-free construction compatible with RoHS standards. The 'PAL' suffix identifies the specific 8-pin Small Outline Plastic DIP package configuration. This series is designed to replace traditional bipolar op-amps in high-impedance sensor interfaces.

Replacement Considerations

ALD1721SAL

FAQ

Does the ALD1721GPAL require external compensation?

No, the device is internally compensated for unity gain stability.

What is the input common mode voltage range?

The input voltage can equal or exceed the positive and negative supply voltages due to its rail-to-rail input design.