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Product Detailed Parameters
- Description：IC COMPARATOR 4 W/VOLT REF 16SO
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Type：with Voltage Reference
- Number of Elements：4
- 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)：0.015mA @ 5V
- Current - Quiescent (Max)：8.5µA
- CMRR, PSRR (Typ)：80dB CMRR, 80dB PSRR
- Propagation Delay (Max)：12µs
- Hysteresis：50mV
- Operating Temperature：-40°C ~ 85°C
- Package / Case：16-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The LTC1445IS#PBF is an ultralow power quad comparator with a built-in reference, housed in a 16-lead plastic SO package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features less than 8.5µA supply current over temperature and includes programmable hysteresis via the HYST pin. Outputs are TTL/CMOS compatible, capable of sourcing up to 40mA continuously. The internal reference voltage is 1.221V ±1%, driving bypass capacitors up to 0.01µF without oscillation.
Feature Summary
- Ultralow quiescent current consumption for battery-powered applications
- Built-in precision voltage reference output
- Programmable hysteresis control via dedicated pin
- TTL/CMOS compatible outputs with high source current capability
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix IS indicates industrial temperature range (-40°C to 85°C) and SOIC package format against official Analog Devices documentation. Confirm RoHS compliance status and lead-free finish requirements prior to ordering. Ensure design compatibility with the 16-lead narrow small outline package dimensions and thermal characteristics specified in the datasheet.
Selection Notes
Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates external resistor networks for biasing. Verify that the input common mode range extending to V+ minus 1.3V meets signal requirements. Consider the open-drain alternative if sourcing current limits are insufficient for the load.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While sharing core architecture, the LTC1445 differs by offering CMOS/TTL outputs and a 1.221V reference, unlike the LTC1443's split supply ground or the LTC1444's open-drain configuration. All variants maintain identical pinouts for easy substitution within designs requiring specific output drive characteristics.
Replacement Considerations
LTC1443IS#PBF and LTC1444IS#PBF are pin-compatible upgrades within the same family.
