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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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)：20µA
- Current - Quiescent (Max)：4µA
- CMRR, PSRR (Typ)：40dB CMRR, 40dB 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 LTC1440IMS8#TR is an ultralow power single comparator with a built-in 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 and includes a 1.182V ±1% reference output capable of driving up to 0.01μF without oscillation. Hysteresis is programmable via the HYST pin using external resistors. The CMOS output stage continuously sources up to 40mA and sinks up to 5mA, eliminating crowbar switching currents during logic transitions.
Feature Summary
- Ultralow quiescent current consumption for battery-powered applications
- Built-in 1.182V bandgap voltage reference with bypass capability
- Programmable hysteresis control via dedicated input pin
- Glitch-free operation with high continuous source current capability
Applications
- Battery-powered system monitoring
- Micropower threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix #TRPBF against the requested #TR designation, as packaging variations may exist within the product family. Confirm the operating temperature range aligns with the commercial grade (0°C to 70°C) specified for this part number variant. Ensure the 8-lead MSOP footprint matches the target PCB layout requirements before finalizing procurement orders.
Selection Notes
Select this component when minimizing static power consumption is critical compared to speed requirements. The integrated reference simplifies design by removing external biasing components. Consider the 15μs propagation delay at low overdrive levels; faster response times are not guaranteed. Verify that the 40mA source current meets load requirements while maintaining microampere quiescent operation.
Part Context
This device belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. While the LTC1441 and LTC1442 lack the internal reference and hysteresis pins found on the LTC1440, they share similar electrical characteristics and package options. The IMS8 designation indicates the industrial temperature range and MSOP packaging format.
Replacement Considerations
The datasheet identifies MAX921/922/923 as pin-compatible upgrades. Verify functional equivalence regarding reference availability and hysteresis control when substituting these specific models.
