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Product Detailed Parameters
- Description：IC COMPARATOR 1 W/VOLT REF 8MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- 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 LTC1440IMS8#PBF is a micropower single comparator with an integrated 1.182V reference, housed in an 8-lead MSOP package. It operates on a single supply from 2V to 11V or dual supplies of ±1V to ±5.5V. The device features programmable hysteresis via the HYST pin and CMOS outputs capable of sourcing up to 40mA. Supply current is typically 2.1µA at 5V. Input common mode range extends from the negative supply to within 1.3V of the positive rail.
Feature Summary
- Integrated 1.182V bandgap reference output
- Programmable hysteresis capability
- Glitch-free CMOS output stage
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the IMS8 suffix confirms the MSOP-8 surface-mount package configuration. Confirm the #PBF designation indicates lead-free compliance and RoHS adherence. Ensure the operating temperature grade matches the specific application requirements for commercial or industrial ranges.
Selection Notes
Select this component when ultralow quiescent current is critical alongside a built-in voltage reference. The LTC1440 supports adjustable hysteresis for noise immunity. Verify that the required output drive current does not exceed the 40mA sourcing limit. Consider input leakage characteristics for high-impedance sensor interfaces.
Part Context
This part belongs to the LTC1440/LTC1441/LTC1442 family of micropower comparators. The LTC1440 variant specifically provides a single comparator with a fixed internal reference and programmable hysteresis. It serves as a direct pin-compatible upgrade for legacy MAX921/922/923 devices.
Replacement Considerations
LTC1440IMS8
FAQ
Can the reference output drive large capacitive loads?
The reference can drive a bypass capacitor of up to 0.01µF directly without oscillation. Larger capacitance values require a series damping resistor.
What is the maximum hysteresis voltage band?
The maximum voltage allowed between the REF and HYST pins is 50mV, producing a maximum hysteresis voltage band of 100mV.
