ALD2302PAL

Overview

The ALD2302PAL is a dual precision CMOS voltage comparator manufactured by Advanced Linear Devices Inc. It features push-pull outputs capable of sourcing and sinking current, eliminating the need for external pull-up resistors. The device operates on a single +5V or dual ±5V supply with low power dissipation of 175µA per comparator. Key electrical characteristics include a typical input bias current of 10pA, a response time of 180ns for TTL inputs, and a high output sinking current of typically 60mA. It is housed in an 8-pin SOIC package.

Feature Summary

• Push-pull driver outputs allow direct current sourcing and sinking without requiring external pull-up resistors.
• Extremely low input bias current of typically 10pA virtually eliminates source impedance effects.
• High gain of 100V/mV ensures precise voltage comparison capability.
• CMOS, NMOS, and TTL compatible logic levels facilitate integration with various digital systems.

Applications

• PCMCIA instruments
• MOSFET driver circuits
• Multiple limit window comparators
• Power supply voltage monitors
• Photodetector sensor circuits

Procurement Notes

Verify the specific suffix 'PAL' corresponds to the 8-pin Small Outline Plastic Dip (SOIC) package variant. Confirm that the lead-free version designation aligns with project requirements. Ensure the operating temperature range of 0°C to +70°C meets environmental specifications. Cross-reference the manufacturer part number ALD2302PAL with official distributor catalogs to confirm availability and authenticity before procurement.

Selection Notes

Select this component when high input impedance and low standby power are critical. The push-pull output architecture simplifies circuit design by removing the need for pull-up components. It is suitable for applications requiring fast response times and high output drive currents. Consider the ALD2302A variant if tighter offset voltage specifications are required compared to the standard ALD2302.

Part Context

This component belongs to the ALD2302/ALD2302A series of dual precision voltage comparators. It shares pinout compatibility with industry-standard LM193 type comparators. The series utilizes advanced silicon gate CMOS technology to achieve high performance with low power consumption. Quad packages like the ALD4302A are available for applications requiring four comparators.

Replacement Considerations

The datasheet notes pinout compatibility with LM193 type industry standard comparators. Verify functional equivalence regarding output drive capability and input bias current when substituting with generic LM193 variants.

FAQ

Does the ALD2302PAL require external pull-up resistors?

No, the device features push-pull outputs that can source and sink current, eliminating the need for external pull-up resistors.

What is the typical input bias current for this comparator?

The typical input bias current is 10pA, which helps eliminate source impedance effects.

Can the outputs be used in a wired-OR configuration?

Yes, the outputs can be used in a wired-OR connection without a pull-up resistor or tied together with other open drain circuits.