ALD2704APAL

Overview

The ALD2704APAL is a dual monolithic CMOS operational amplifier featuring rail-to-rail input and output voltage ranges. It offers a unity gain bandwidth of 2.1 MHz, a slew rate of 5 V/µs, and extremely low input bias currents typically less than 1.0 pA. The device operates on supply voltages ranging from ±3.25 V to ±5.0 V (6.5 V to 10.0 V single supply) within an operating temperature range of 0°C to +70°C. It includes internal offset voltage trimming, short circuit protection, and high capacitive load capability up to 4000 pF at a gain of 5.

Feature Summary

• Rail-to-rail input and output voltage ranges expand signal voltage margins
• Extremely low input bias currents suitable for high source impedance applications
• High capacitive load driving capability without external compensation
• Internal offset voltage trimming eliminates need for external nulling

Applications

• Voltage follower/buffer circuits
• Photodiode amplifiers
• Data acquisition systems
• Active filters
• Sample/Hold amplifiers

Procurement Notes

Verify the specific suffix 'PAL' corresponds to the 8-pin Plastic DIP package and lead-free (RoHS) compliance as defined in the ordering information. Confirm the operating temperature range matches the application requirements, as this variant is rated for 0°C to +70°C. Ensure static control procedures are followed due to ESD sensitivity.

Selection Notes

Select this component when rail-to-rail performance is required with low power consumption and high input impedance. It serves as a direct alternative to J-FET input amplifiers in low voltage battery-operated systems. Consider the 2.1 MHz bandwidth and 5 V/µs slew rate for general-purpose analog signal conditioning where large signal swings near supply rails are necessary.

Part Context

The ALD2704 series includes variants such as ALD2704ASAL (SOIC-8), ALD2704ADA (CERDIP-8), and their B-grade counterparts. The ALD2704APAL specifically denotes the plastic DIP package version. All variants share the same dual rail-to-rail CMOS architecture but differ in physical packaging and potentially extended temperature ratings depending on the suffix.

Replacement Considerations

No public confirmed substitute part numbers are documented in the provided datasheet.

FAQ

What is the maximum capacitive load the ALD2704APAL can drive?

The device can drive up to 4000 pF of capacitive load at a gain of 5, or up to 400 pF at unity gain.

Does the ALD2704APAL require external frequency compensation?

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

How does the input bias current affect high source impedance applications?

With typical input bias currents less than 1.0 pA, the device minimizes signal distortion from bias currents, making it ideal for high source impedance applications.