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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, Open-Drain, 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：0°C ~ 70°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 LTC1444CS#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. The internal reference voltage is 1.221V ±1%. Outputs are open-drain, capable of sinking current while TTL/CMOS compatible outputs source up to 40mA.
Feature Summary
- Ultralow quiescent current consumption
- Built-in precision voltage reference
- Programmable hysteresis capability
- Open-drain output configuration
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific ordering suffix matches the required package type and temperature range. Confirm lead-free finish status and RoHS compliance details through official manufacturer documentation before procurement. Ensure the component is sourced from authorized distributors to guarantee authenticity and traceability for industrial applications.
Selection Notes
Select this component when low power consumption is critical alongside precise threshold detection. The integrated reference eliminates external components, simplifying design. Verify that the open-drain output topology aligns with the system's pull-up requirements. Consider the wide input common mode range and supply voltage flexibility for diverse operating conditions.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While sharing similar core architecture, the LTC1444 specifically offers programmable hysteresis and open-drain outputs, distinguishing it from the push-pull outputs of the LTC1443 and LTC1445 variants.
Replacement Considerations
LTC1443CS#PBF and LTC1445CS#PBF are pin-compatible upgrades within the same series. Note that output configurations differ; LTC1443/LTC1445 use push-pull outputs, whereas LTC1444 uses open-drain outputs. Hysteresis functionality is also unique to the LTC1444 and LTC1445 models.
