ALD4701BSBL

Overview

The ALD4701BSBL is a quad micropower rail-to-rail CMOS operational amplifier manufactured by Advanced Linear Devices. It operates on single supplies from +2V to +10V or dual supplies from ±1V to ±5V, with total supply current for all four amplifiers at a maximum of 1mA at 5V. The device features rail-to-rail input and output voltage ranges, unity gain stability, and extremely low input bias currents typically at 1.0pA. Key electrical specifications include a unity gain bandwidth of 0.7MHz, a slew rate of 0.7V/µs, and high open-loop voltage gain up to 100V/mV. It is housed in a 14-pin Small Outline Plastic DIP (SOIC) package.

Feature Summary

• Rail-to-rail input and output voltage ranges allow signal voltages to equal or approach the positive and negative supply rails.
• Extremely low input bias currents of 1.0pA typical ensure minimal distortion of analog signals from high source impedance.
• Unity gain stable design eliminates the need for external compensation components.
• Output stage provides short circuit protection and can drive capacitive loads up to 50pF.

Applications

• Voltage follower, buffer, and amplifier circuits
• Charge integrator and photodiode amplifier configurations
• Data acquisition systems and high-performance portable instruments
• Sensor and transducer amplifiers requiring low leakage
• Active filters and sample/hold amplifiers

Procurement Notes

Verify the specific suffix 'SBL' corresponds to the 14-pin Small Outline Plastic DIP package and the commercial operating temperature range of 0°C to +70°C. Confirm lead-free (RoHS) compliance as indicated by the 'L' suffix convention. Ensure static control procedures are used during handling due to ESD sensitivity. Cross-reference the ordering information to confirm availability of this specific package variant.

Selection Notes

Select the ALD4701BSBL when designing circuits that require low power consumption alongside rail-to-rail signal swing capabilities. It is suitable for mixed digital/analog applications sharing a single power supply. Consider the 0.7V/µs slew rate and 0.7MHz bandwidth for moderate-speed signal processing. Verify that the load requirements do not exceed the specified 50pF capacitive drive capability without additional isolation.

Part Context

The ALD4701 series includes variants such as ALD4701A, ALD4701B, and ALD4701, differentiated primarily by offset voltage and drift specifications. The ALD4701BSBL specifically denotes the B-grade performance level packaged in a 14-pin SOIC format. This component belongs to a family designed for compatibility with industry-standard pinouts like the LM324 and ICL7641, facilitating direct replacements in existing designs.

Replacement Considerations

The datasheet notes compatibility with LM324 and ICL7641 pin configurations. No specific substitute part numbers are documented in the provided material.