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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：-
- 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 LTC1443IS#PBF is an ultralow power quad comparator with a built-in reference, manufactured by Analog Devices Inc. It operates from a single 2V to 11V supply or a dual ±1V to ±5.5V supply. The device features less than 8.5µA supply current over temperature and includes an internal reference of 1.182V ±1%. Outputs are TTL/CMOS compatible, capable of sourcing up to 40mA continuously. Propagation delay is typically 12µs at 10mV overdrive. It is housed in a 16-lead Plastic SO package.
Feature Summary
- Ultralow quiescent current consumption
- Built-in voltage reference output
- TTL/CMOS compatible outputs
- Wide supply voltage range
Applications
- Battery-powered system monitoring
- Threshold detectors
- Window comparators
- Oscillator circuits
Procurement Notes
Verify the specific suffix IS#PBF indicates the industrial temperature grade (-40°C to 85°C) and the 16-lead Plastic SO package configuration. Confirm lead-free finish compliance and ensure the ordering code matches the required package style for PCB layout compatibility.
Selection Notes
Select this component when low power consumption is critical alongside integrated reference functionality. The LTC1443 provides separate ground for split supply operation, unlike the LTC1444/LTC1445 which share ground/hysteresis pins. Ensure input common mode range requirements align with the specified V– to V+ – 1.3V limits.
Part Context
This part belongs to the LTC1443/LTC1444/LTC1445 family of micropower comparators. While pin-compatible upgrades exist for MAX924, the LTC1443 specifically offers a dedicated ground pin for the output stage, facilitating split supply applications. It shares the same core architecture as the hysteresis-capable variants but lacks the programmable hysteresis feature.
Replacement Considerations
LTC1443IN#PBF (PDIP package)
FAQ
Does the LTC1443 support programmable hysteresis?
No, only the LTC1444 and LTC1445 models include a HYST pin for programmable hysteresis. The LTC1443 does not have this feature.
What is the maximum continuous source current for the outputs?
The comparator output stage can continuously source up to 40mA.
