ALD4303APBL

Overview

The ALD4303APBL is a quad precision micropower CMOS voltage comparator with open-drain outputs, housed in a 14-pin SOIC package. It operates on single supplies from 3V to 10V or dual supplies of ±5V. Key electrical characteristics include a typical input bias current of 10pA, a supply current of 22µA per comparator, and a high output sinking current of typically 60mA. The device features an operating temperature range of 0°C to +70°C.

Feature Summary

• Features extremely low input bias currents that virtually eliminate source impedance effects.
• Provides high output sinking current capability for direct load driving without external buffers.
• Supports single and dual power supply configurations with industry-standard pinout compatibility.

Applications

• Sensor detection circuits
• MOSFET driver applications
• High source impedance voltage comparison circuits
• Power supply voltage monitors

Procurement Notes

Verify the specific suffix 'PBL' corresponds to the 14-pin Small Outline Plastic Dip (SOIC) package variant. Confirm the operating temperature range aligns with system requirements, as this suffix denotes the commercial grade (-55 °C to +125°C is reserved for the DB/CERDIP package). Ensure the ordering code matches the lead-free version specifications provided by Advanced Linear Devices.

Selection Notes

Select this component when high input impedance and low standby power are critical. The open-drain architecture allows flexible wired-OR connections and level shifting. Consider the 60mA sink capability for driving relays or LEDs directly. Verify that the 0°C to +70°C commercial temperature range meets environmental constraints compared to the industrial grade CERDIP option.

Part Context

This part belongs to the ALD4303A/ALD4303 series of quad precision comparators. It utilizes advanced silicon gate CMOS technology to achieve micropower operation while maintaining high gain and fast response times. The series is designed to interface with CMOS, NMOS, and TTL logic families.

Replacement Considerations

The datasheet notes compatibility with LM393 type pinouts. Other comparators in the ALD family, such as the ALD2301, ALD2302, and ALD4302, can be used in conjunction with this device for mixed-output configurations.