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Product Detailed Parameters
- Description：PREC VOLT COMP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Bulk
- Type：-
- Number of Elements：-
- Output Type：-
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：-
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：-
- Mounting Type：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LT1011CH is a general-purpose voltage comparator manufactured by Analog Devices Inc. It features an 8-lead TO-5 metal can package and operates within a temperature range of -55°C to 125°C. The device supports single or dual supply voltages ranging from 3V to ±18V, with a maximum supply voltage of 36V. Key electrical specifications include a guaranteed maximum input offset voltage of 0.5mV, a maximum response time of 250ns, and a minimum large-signal voltage gain of 200,000 V/mV. It provides a floating open-collector output capable of sourcing or sinking up to 50mA.
Feature Summary
- Pin compatible with LM111 series devices while offering superior input characteristics
- Guaranteed low input bias current and minimal input offset voltage drift
- Floating transistor output allows driving loads referenced to ground, negative, or positive supplies
- Capable of operating fully specified on a single 5V supply
Applications
- SAR A/D Converters
- Voltage-to-Frequency Converters
- Precision RC Oscillators
- Peak Detectors
- Motor Speed Control
Procurement Notes
Verify the specific ordering suffix and temperature grade when sourcing replacements. Confirm that the replacement component matches the original pinout and package dimensions for direct integration. Check manufacturer documentation for any changes in lead finish or RoHS compliance status relative to the obsolete status of this part number.
Selection Notes
Select this component for applications requiring high speed and precision comparable to the LM111 but with lower power consumption. Ensure the design accounts for the floating output configuration and appropriate pull-up resistor values. Consider the TO-5 package constraints if surface-mount alternatives are preferred for modern PCB layouts.
Part Context
The LT1011CH belongs to the LT1011 family of voltage comparators produced by Analog Devices Inc. This series is designed as a drop-in replacement for the National Semiconductor LM111, offering improved performance metrics such as lower bias current and higher voltage gain. The CH variant specifically denotes the industrial/commercial temperature grade housed in the legacy TO-5 metal can package.
Replacement Considerations
LM111H/NOPB (Texas Instruments)
