ALD4706ASBL

Overview

The ALD4706ASBL is a quad monolithic CMOS ultra micropower operational amplifier manufactured by Advanced Linear Devices. It features rail-to-rail input and output voltage ranges, unity gain stability, and extremely low input bias currents of 0.1pA typical. The device operates on dual supplies from ±1V to ±5V or single supplies from +2V to +10V. Key electrical parameters include a bandwidth of 200kHz, a slew rate of 0.17V/µs, and a maximum supply current of 200µA for all four amplifiers at 5V. It is housed in a 14-pin Small Outline Plastic DIP (SOIC) package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Rail-to-rail input and output voltage ranges allow signal voltages to approach power supply rails.
• Extremely low input bias current of 0.1pA minimizes distortion in high source impedance applications.
• Unity gain stable design ensures reliable operation without external compensation components.
• Output short circuit protection safeguards the device against load faults.

Applications

• Voltage follower/buffer/amplifier circuits
• Charge integrator and photodiode amplifier designs
• Data acquisition systems requiring low leakage
• High performance portable instruments
• Active filters and sample/hold amplifiers

Procurement Notes

Verify the specific suffix 'SBL' corresponds to the 14-pin SOIC package and the commercial temperature range (0°C to +70°C). Confirm RoHS compliance status as indicated by the 'L' suffix in ordering information. Ensure the ordered part matches the A or B grade offset voltage requirements if precision is critical. Check for lead-free manufacturing specifications.

Selection Notes

Select this component when low power consumption and rail-to-rail signal handling are required in single or dual supply environments. It serves as a drop-in replacement for LM324 and ICL7641 types in many applications. Consider the 0.1pA input bias current for high-impedance sensor interfaces. Verify that the 200kHz bandwidth meets the system's frequency response needs.

Part Context

The ALD4706 series includes variants like ALD4706APBL (PDIP) and ALD4706ADB (CERDIP). The ASBL variant specifically denotes the small outline plastic dip package. All variants share the same internal architecture and electrical characteristics but differ in physical packaging and thermal properties.

Replacement Considerations

The datasheet notes compatibility with industry standard pin configurations of LM324 and ICL7641 types. Verify pinout compatibility before substitution. Electrical parameters such as slew rate and bandwidth may differ between these alternatives.

FAQ

What is the typical input bias current for the ALD4706ASBL?

The typical input bias current is 0.1pA, which is achieved through silicon gate CMOS technology.

Is the ALD4706ASBL unity gain stable?

Yes, the device is internally compensated for unity gain stability using a novel scheme that does not require a nulling resistor.

What is the maximum supply voltage for the ALD4706ASBL?

The absolute maximum supply voltage is 10.6V. It is designed for single supplies up to +10V or dual supplies up to ±5V.