ALD2303APAL

Overview

The ALD2303APAL is a dual precision micropower CMOS voltage comparator in an 8-pin Plastic DIP package. It operates on single (+5V) or dual (±5V) supplies within a 3V to 10V range. Key electrical characteristics include a typical supply current of 40µA, input bias current of 200pA, and output sinking current of 60mA. The device features open-drain wired-OR outputs, a response time of 6.5µs, and an operating temperature range of 0°C to +70°C.

Feature Summary

• Extremely low power consumption combined with high precision for sensitive detection applications
• Built-in high input impedance buffer virtually eliminates source impedance effects
• High output sinking capability allows direct driving of loads without external buffers

Applications

• Sensor detection circuits
• MOSFET driver
• Battery operated instruments
• Multiple relay drivers
• Oscillators

Procurement Notes

Verify the specific suffix 'PAL' corresponds to the 8-pin Plastic DIP package and commercial temperature range when ordering. Confirm RoHS compliance status as standard versions may vary by manufacturing date. Ensure the required quantity matches the manufacturer's minimum order packaging specifications. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Selection Notes

Select this component for applications requiring low standby power alongside high output drive capability. The open-drain output configuration supports wired-OR logic and level shifting. Verify that the input common-mode voltage range includes ground for single-supply operation. Consider thermal dissipation limits if driving heavy loads continuously.

Part Context

This part belongs to the ALD2303A/ALD2303 family of dual precision comparators. It shares functional similarities with industry-standard LM193 pinouts but offers superior input impedance and lower power consumption due to CMOS technology. The 'A' variant typically denotes tighter offset voltage specifications compared to the standard version.

Replacement Considerations

Pin-compatible alternatives include the LM193 series, though electrical parameters such as input bias current and supply current will differ significantly. Verify that substitute devices meet the specific low-power and high-impedance requirements of the original design.