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Product Detailed Parameters
- Description：IC COMPARATOR 4 W/VOLT REF 16DFN
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR)
- 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-WFDFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：16-DFN (5x4)
- Grade：-
- Qualification：-
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Overview
The LTC1444CDHD#TRPBF is an ultralow power quad comparator with a built-in reference, housed in a 16-lead (5mm × 4mm) plastic DFN package. It operates from a single 2V to 11V supply or dual ±1V to ±5.5V supply. The device features a 1.221V ±1% internal reference and open-drain outputs. Supply current is typically 8µA at 3V and 8.5µA at 5V. Propagation delay is 14µs typical at 3V and 12µs at 5V. Input offset voltage is ±10mV maximum. The exposed pad connects internally to V–.
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 suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the CDHD designation corresponds to the commercial temperature range of 0°C to 70°C. Ensure the open-drain output requirement matches the circuit design, as this variant differs from the push-pull output versions. Check for lead-free compliance markings on the shipping container.
Selection Notes
Select this component when low power consumption is critical alongside precise threshold detection. The open-drain output requires an external pull-up resistor. Use the programmable hysteresis feature to prevent false triggering in noisy environments. Verify that the input common mode range extending to the negative supply meets the signal requirements.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. The LTC1444 specifically provides four comparators with open-drain outputs and adjustable hysteresis. It shares pinout compatibility with other variants in the series, allowing for flexible design upgrades based on output drive needs.
Replacement Considerations
LTC1444IDHD#TRPBF offers the same electrical characteristics but supports an industrial temperature range of –40°C to 85°C instead of the commercial range.
