LT1011CN8#PBF

Overview

The LT1011CN8#PBF is a general-purpose voltage comparator manufactured by Analog Devices Inc. It features an open-collector output capable of sourcing or sinking up to 50mA. The device operates on a single supply from 3V to 36V, or dual supplies from ±1.5V to ±18V. Key electrical specifications include a maximum input offset voltage of 1.5mV, a maximum response time of 250ns, and a minimum large-signal voltage gain of 200V/mV. It supports differential input voltages up to ±36V.

Feature Summary

• Pin-compatible with LM111 series devices while offering improved bias current and offset voltage characteristics
• Floating transistor output allows driving loads referenced to ground, negative supply, or positive supply
• Strobe pin enables forcing the output transistor into an off state for controlled high output
• Balanced inputs allow for external adjustment of input offset voltage or addition of hysteresis

Applications

• SAR A/D Converters
• Voltage-to-Frequency Converters
• Precision RC Oscillators
• Peak Detectors
• Motor Speed Control

Procurement Notes

Verify the specific temperature grade (C) and package type (N8 PDIP) against project requirements. Confirm lead-free finish compliance if RoHS3 standards are mandatory. Ensure the strobe pin is driven by current rather than grounded to prevent functional errors. Check for any obsolete package alternatives if long-term availability is a concern.

Selection Notes

Select this component when a general-purpose comparator with low input bias current and guaranteed DC parameters is required. It is suitable for applications needing operation on a single 5V supply or wider voltage ranges. Consider the open-collector output topology for flexible load interfacing. Verify that the 250ns response time meets the system's speed requirements.

Part Context

This part belongs to the LT1011 family of precision voltage comparators. It is designed as a drop-in replacement for the LM111 but provides superior performance metrics including lower offset voltage drift and higher voltage gain. The CN8 suffix indicates an industrial temperature range and an 8-lead plastic DIP package.

Replacement Considerations

LM111P