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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：with Voltage Reference
- Number of Elements：1
- Output Type：CMOS, TTL
- Voltage - Supply, Single/Dual (±)：2V ~ 11V, ±1V ~ 5.5V
- Voltage - Input Offset (Max)：10mV @ 5V
- Current - Input Bias (Max)：-
- Current - Output (Typ)：40mA
- Current - Quiescent (Max)：4.4µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：15µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-MSOP
- Grade：-
- Qualification：-
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Overview
The Analog Devices LTC1440IMS8#TRPBF is an ultralow power single comparator with a built-in 1.182V reference, housed in an 8-lead MSOP package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features a typical supply current of 2.1µA at 5V and 4.4µA over the industrial temperature range. It includes programmable hysteresis via the HYST pin and provides TTL/CMOS compatible outputs capable of sourcing up to 40mA. The input common mode range extends from the negative supply to within 1.3V of the positive supply.
Feature Summary
- Built-in 1.182V bandgap reference output that can drive a bypass capacitor without oscillation
- Programmable hysteresis using external resistors connected to the HYST pin
- Glitch-free CMOS output stage eliminates cross-conducting currents during logic state transitions
- Wide supply voltage range supporting both single and split supply configurations
Applications
- Battery-powered system monitoring
- Micropower threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the IMS8 suffix indicates the Industrial temperature grade (0°C to 70°C) and MSOP package. Confirm the #TRPBF suffix denotes Lead-Free status and Tape & Reel packaging. Ensure compatibility with the required operating environment and board space constraints before finalizing procurement specifications.
Selection Notes
Select this component for applications requiring minimal quiescent current and integrated reference functionality. The LTC1440 is suitable where space is limited due to its compact MSOP footprint. Consider the 40mA output source capability for direct driving of low-current loads without additional buffering stages.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1441 and LTC1442 are dual-channel variants, the LTC1440 is a single-channel device. All members share similar electrical characteristics regarding supply current and input ranges, differing primarily in channel count and specific pinout configurations for the second comparator.
Replacement Considerations
The datasheet identifies the MAX921, MAX922, and MAX923 as pin-compatible upgrades. Verify that the replacement device meets the specific supply voltage and temperature requirements of the original design.
