ALD4701SBL

Overview

The ALD4701SBL is a quad micropower rail-to-rail CMOS operational amplifier manufactured by Advanced Linear Devices. It operates on dual supplies from ±1V to ±5V or single supplies from +2V to +10V. Key electrical characteristics include a unity gain bandwidth of 700 kHz, a slew rate of 0.7 V/µs, and an input bias current as low as 1 pA. The device features high open-loop voltage gain (up to 100 V/mV) and output short-circuit protection. 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 for maximum dynamic signal swing
• Extremely low input bias currents suitable for high source impedance applications
• Unity gain stable with internal frequency compensation
• Micropower operation with low power dissipation

Applications

• Voltage follower/buffer/amplifier circuits
• Charge integrators and photodiode amplifiers
• Data acquisition systems and active filters
• Sensor and transducer amplifiers
• Picoammeters and current to voltage converters

Procurement Notes

Verify the specific suffix 'SBL' corresponds to the 14-pin SOIC package and commercial temperature range (0°C to +70°C). Confirm RoHS compliance status if required, noting that leaded versions may require direct factory contact. Ensure supply voltages remain within the specified ±1V to ±5V dual or +2V to +10V single limits to maintain guaranteed performance parameters.

Selection Notes

Select this component when designing low-power analog circuits requiring rail-to-rail signal handling. It is appropriate for battery-operated systems where quiescent current must be minimized. Consider its 700 kHz bandwidth and 0.7 V/µs slew rate for moderate-speed signal conditioning tasks. Verify that the 14-pin SOIC footprint fits the target PCB layout constraints.

Part Context

The ALD4701 series belongs to Advanced Linear Devices' family of monolithic CMOS operational amplifiers. It shares pin compatibility with industry-standard LM324 and ICL7641 types while offering superior input bias current and rail-to-rail capabilities. The SBL variant specifically denotes the plastic small outline package configuration designed for surface mount assembly.

Replacement Considerations

Direct pin-compatible replacements include devices matching the LM324 pinout. Verify that substitute parts meet the specific 1 pA input bias current and rail-to-rail requirements if these are critical design constraints.