ALD2706ASAL

Overview

The ALD2706ASAL is a dual monolithic CMOS micropower operational amplifier manufactured by Advanced Linear Devices, Inc. It features rail-to-rail input and output voltage ranges, allowing operation with signal voltages equal to the supply rails. The device operates on single supplies from +2V to +10V or dual supplies from ±1V to ±5V. Key electrical specifications include a unity gain bandwidth of 200kHz, a slew rate of 0.1V/µs, and a maximum supply current of 80µA at 5V. Input bias current is typically 0.1pA, and the operating temperature range for this package is 0°C to +70°C.

Feature Summary

• Rail-to-rail input and output voltage capability enables full signal swing across the supply range.
• Ultra-micropower consumption with typical supply current of 20µA per amplifier.
• Extremely low input bias current of 0.1pA ensures minimal loading on high-impedance sources.
• Internally compensated for unity gain stability without requiring external nulling resistors.

Applications

• Photodiode amplifiers
• Picoammeters
• High impedance non-inverting amplifiers
• Current to voltage converters

Procurement Notes

Verify that the specific part number suffix 'SAL' corresponds to the 8-pin Small Outline Plastic DIP (SOIC) package configuration. Confirm that the lead-free (RoHS) designation matches project requirements. Ensure the operating environment remains within the specified 0°C to +70°C temperature range for this package variant. Check for ESD sensitivity handling protocols during assembly.

Selection Notes

Select this component when designing circuits requiring low power consumption alongside rail-to-rail signal processing capabilities. It is suitable for battery-operated systems where supply voltages range from +2V to +10V. Consider its 200kHz bandwidth and 0.1V/µs slew rate for applications involving slow-moving signals or sensor conditioning. Verify that the source impedance does not exceed levels that would cause significant noise pickup given the high input impedance.

Part Context

This device belongs to the ALD2706 family of dual ultra-micropower rail-to-rail CMOS operational amplifiers. The ALD2706ASAL specifically denotes the A-grade version housed in an 8-pin SOIC package with lead-free construction. It shares pinout compatibility with industry standard op-amps but offers distinct advantages in low voltage and low current applications compared to traditional bipolar counterparts.

Replacement Considerations

Direct replacements include other parts from the ALD2706 series such as the ALD2706BSAL or ALD2706SAL, provided the performance grade meets design needs. Cross-referencing with other dual rail-to-rail CMOS op-amps requires verifying supply voltage ranges, input bias currents, and package dimensions to ensure mechanical and electrical compatibility.

FAQ

How does the internal switching point affect unity gain buffer applications?

The internal switching point is located approximately 1.5V below the positive supply voltage. In unity gain buffer configurations, this may cause input offset voltage variations if the common mode voltage exceeds this threshold. Designers should account for these variations in precision applications.

What is the recommended power-up sequence for this device?

To prevent latch-up or junction degradation, the circuit should be powered up before or simultaneously with any applied input voltages. Input voltages must be limited to not exceed 0.3V beyond the power supply voltage levels.