ALD4301PBL

Overview

The ALD4301PBL is a quad precision CMOS voltage comparator manufactured by Advanced Linear Devices, Inc. It features an open-drain driver configuration and operates on a single +5V or dual ±5V power supply. The device provides high input impedance of 10^12Ω and low input bias current of 10pA. Typical response time is 300ns with a supply current of 55µA per comparator. It supports wired-OR connections and drives up to 60mA output sinking current.

Feature Summary

• Monolithic quad voltage comparator built with advanced silicon gate CMOS technology
• Open-drain outputs allowing connection to external voltages higher than V+ for flexible interfacing
• Extremely low input bias currents typically at 10pA to minimize source impedance effects
• Compatible with CMOS, NMOS, and TTL logic families

Applications

• High source impedance voltage comparison circuits
• Dual/Quad limit window comparators
• Power supply voltage monitoring systems
• Photo-detector sensor circuits
• Battery operated instruments requiring low standby power

Procurement Notes

Verify the specific suffix PBL indicates the 14-pin Plastic DIP package variant when sourcing. Confirm lead-free status if required by project specifications. Ensure the operating temperature range aligns with the 0°C to +70°C specification for this package type. Cross-reference pinout compatibility with LM393 equivalents if substituting in existing designs.

Selection Notes

Select this component for applications demanding very low input currents and high input impedance. The open-drain architecture suits wired-OR configurations and level translation tasks. Consider thermal effects if driving large output current transients near ambient temperatures. Verify supply voltage constraints between 3V and 10V for single supply operation.

Part Context

This part belongs to the ALD4301A/ALD4301 series from Advanced Linear Devices. It serves as a high-performance alternative to standard bipolar comparators. The PBL designation specifically identifies the plastic DIP packaging option within the broader family that includes SOIC and CERDIP variants.

Replacement Considerations

Pinout and functional equivalent to LM393 types.