ALD1726GSAL

Overview

The ALD1726GSAL is a monolithic precision CMOS ultra-micropower operational amplifier featuring rail-to-rail input and output capabilities. It operates on dual supplies from ±1V to ±5V or single supplies from +2V to +10V. Key electrical parameters include a maximum supply current of 40μA at 5V, a unity gain bandwidth of 400kHz, and a slew rate of 0.17V/μs. The device offers high open-loop voltage gain (typically 100V/mV) and extremely low input bias currents (0.01pA typical). It is housed in an 8-pin SOIC package with an operating temperature range of 0°C to +70°C.

Feature Summary

• Rail-to-rail input and output voltage ranges enable full signal swing near supply rails.
• Ultra-low power consumption with micropower operation suitable for battery systems.
• Extremely low input bias current ideal for high source impedance applications.
• Internally compensated for unity gain stability without external components.

Applications

• Voltage amplifier
• Charge integrator
• Photodiode amplifier
• Data acquisition systems
• Precision sample and hold amplifiers

Procurement Notes

Verify the specific suffix 'SAL' corresponds to the 8-pin Small Outline Plastic DIP Package (SOIC) variant when ordering. Confirm RoHS compliance status as indicated by the 'L' suffix designation. Ensure the application environment remains within the specified 0°C to +70°C operating temperature range for standard commercial grade devices. Cross-reference the manufacturer's latest datasheet revision for any updates to absolute maximum ratings or electrical characteristics prior to final design implementation.

Selection Notes

Select this component for designs requiring low power dissipation combined with high precision and rail-to-rail performance. It is suitable for mixed digital/analog systems sharing a single power supply. Consider the 400kHz bandwidth and 0.17V/μs slew rate for moderate speed signal conditioning. Verify that the source impedance does not exceed limits where input bias current noise becomes significant. Ensure load requirements stay within the specified resistive and capacitive drive capabilities.

Part Context

The ALD1726GSAL belongs to the ALD1726 family of precision operational amplifiers manufactured by Advanced Linear Devices. This series utilizes silicon gate CMOS technology to achieve high performance at very low power levels. The 'G' suffix typically denotes lead-free (RoHS) compatibility, while 'SAL' specifies the surface-mount SOIC-8 package. These devices are designed for robust operation in temperature-extreme environments and rugged conditions.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation.

FAQ

Does the ALD1726GSAL require external frequency compensation?

No, the device is internally compensated for unity gain stability using a novel scheme that does not require a nulling resistor or external compensation components.

What is the input offset voltage specification for the ALD1726GSAL?

The input offset voltage is typically 0.15mV and maximized at 0.35mV at 25°C with a source resistance of 100kΩ. On-chip trimming allows use without external nulling in most applications.