ALD2302ASAL

Overview

The ALD2302ASAL 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 a low supply current of 175µA per comparator. Key electrical parameters 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 output drivers provide current sourcing and sinking capabilities without requiring external pull-up resistors.
• High input impedance and extremely low input bias current minimize source impedance effects.
• CMOS, NMOS, and TTL compatible logic levels ensure broad interface flexibility.
• Low power dissipation supports battery-operated applications.

Applications

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

Procurement Notes

Verify the specific suffix 'SAL' corresponds to the lead-free 8-pin Small Outline Plastic DIP (SOIC) package variant. Confirm that the component meets the required operating temperature range of 0°C to +70°C for your application environment. Ensure compatibility with single or dual supply voltages within the specified 4V to 10V range during system design validation.

Selection Notes

Select this component when high-speed comparison with low standby power is required. The push-pull output architecture simplifies circuit design by removing the need for pull-up components. Consider the 180ns response time for timing-critical applications. Verify that the 60mA output sink capability meets load requirements without necessitating additional buffer stages.

Part Context

This part belongs to the ALD2302 series of dual precision voltage comparators built with silicon gate CMOS technology. It shares pinout compatibility with industry standard LM193 type comparators. The series includes variants such as the ALD2302A for enhanced specifications and other packages like PDIP-8 and CERDIP-8.

Replacement Considerations

The datasheet notes pinout compatibility with LM193 type industry standard comparators. For quad package requirements, the ALD4302A/ALD4302 quad voltage comparator is suggested as an alternative within the same product family.

FAQ

Does the ALD2302ASAL 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.