ALD2724PBL

Overview

The ALD2724PBL is a dual monolithic operational amplifier with MOSFET input, featuring rail-to-rail input and output voltage ranges. It offers a slew rate of 5.0 V/μs and operates on supply voltages from ±3.25V to ±5.0V (6.5V to 10V single). The device includes Electrically Programmable Analog Device (EPAD) technology for user-programmable offset voltage trimming. Electrical characteristics include an initial input offset voltage of up to 150 μV, input bias current of 10 pA at 25°C, and a gain-bandwidth product of 2.1 MHz.

Feature Summary

• Rail-to-rail input and output voltage ranges expand signal voltage range for low operating supplies.
• Electrically Programmable Analog Device (EPAD) technology allows in-system programming of offset voltage.
• High slew rate of 5.0 V/μs supports fast signal transitions.
• Complementary output stage design enables symmetrical sourcing and sinking of load current.

Applications

• Sensor interface circuits
• Transducer biasing circuits
• Capacitive and charge integration circuits
• Biochemical probe interface
• Precision Sample and Hold amplifiers

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. The 'P' suffix typically denotes a Plastic DIP package, while other suffixes indicate different form factors. Ensure compatibility with standard EPAD programmers if in-system calibration is required. Confirm that the selected variant meets the necessary operating temperature specifications for the intended application environment.

Selection Notes

Select this component when low voltage operation and high precision are required without external trimming components. The EPAD feature is suitable for applications needing system-level calibration to minimize offset errors caused by power supply or common-mode variations. Consider the PDIP-14 package for through-hole mounting requirements. Evaluate the trade-off between the programmable offset range and the complexity of implementing the programming circuitry.

Part Context

The ALD2724 series serves as an alternative to J-FET input operational amplifiers in low-voltage applications. It is part of Advanced Linear Devices' portfolio of precision analog integrated circuits designed for portable instruments and sensor interfaces. The device utilizes CMOS technology to achieve low power consumption while maintaining high performance metrics such as low noise and high input impedance.

Replacement Considerations

ALD2724ESB

FAQ

How does the EPAD technology function in the ALD2724?

EPAD technology uses internal electrically programmable elements connected to dedicated pins (VE1A, VE2A, etc.) to adjust the input offset voltage. Users can program these pins using an EPAD programmer to trim the offset voltage to a desired level, which remains stored even when power is removed.

What is the maximum capacitive load the ALD2724 can drive?

The device is designed to drive up to 400pF of capacitive load at unity gain and up to 4000pF at a gain of 5, ensuring stability in various loading conditions.