LT1011ACN8#PBF

Overview

The LT1011ACN8#PBF is a general-purpose voltage comparator manufactured by Analog Devices Inc. It operates on single or dual supplies ranging from 3V to ±18V, with absolute maximum ratings of 36V supply and 50V output-to-negative-supply differential. Key electrical characteristics include a guaranteed maximum input offset voltage of 0.5mV, input bias current of 25nA, and response time of 250ns. The device features a floating transistor output capable of sourcing or sinking 50mA.

Feature Summary

• Pin compatible with LM111 series devices while offering significantly improved input characteristics including lower bias current and offset voltage.
• Features a floating transistor output that allows driving loads referenced to ground, negative supply, or positive supply independently.
• Includes a strobe function via the Balance/Strobe pin to force the output transistor into an off state.
• Capable of handling large differential and common mode voltages without damage, supporting inputs clamped to supplies.

Applications

• SAR A/D Converters
• Voltage-to-Frequency Converters
• Precision RC Oscillators
• Motor Speed Control
• Relay/Lamp Drivers

Procurement Notes

Verify the specific temperature grade AC (0°C to 70°C) matches the application requirements. Confirm the 8-Lead Plastic DIP package form factor is suitable for the PCB layout. Ensure supply voltages remain within the 3V to ±18V operational range to maintain specified performance parameters.

Selection Notes

Select this component when high precision is required compared to standard comparators, specifically due to its low offset voltage drift of 15µV/°C. It is suitable for applications requiring fast switching with millivolt-level input signals. Consider the strobe functionality if output control is needed independent of input states.

Part Context

This part belongs to the LT1011 family of voltage comparators. It is designed as a drop-in replacement for the LM111 but provides superior performance metrics such as five times higher voltage gain and faster response under large overdrive conditions. The AC suffix denotes the commercial temperature range variant.

Replacement Considerations

LM111H/NOPB