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Product Detailed Parameters
- Description：IC COMPARATOR 1 WINDW 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Window
- Number of Elements：1
- Output Type：Open-Drain
- Voltage - Supply, Single/Dual (±)：3V ~ 27V
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：0.025µA @ 4V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：2.2mA, 4.3mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：410ns
- Hysteresis：25mV
- Operating Temperature：-40°C ~ 125°C
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The AMC22C12DR is a fast-response, basic isolated window comparator manufactured by Texas Instruments. It features an adjustable trip threshold and a latch function within an 8-pin SOIC package. The device supports a high-side supply range of 3V to 27V and a low-side supply range of 2.7V to 5.5V. It provides a typical propagation delay of 280ns and a minimum common-mode transient immunity (CMTI) of 55V/ns. The component operates over an extended industrial temperature range from -40°C to +125°C.
Feature Summary
- Provides galvanic isolation certified for safety applications with up to 3kV RMS working voltage.
- Features an open-drain output that supports both transparent mode and optional latch mode.
- Allows adjustable trip thresholds via a single external resistor for window or positive-comparator modes.
Applications
- Overcurrent detection in motor drives
- Overvoltage detection in frequency inverters
- Protection monitoring in solar inverters
- Fault detection in DC/DC converters
Procurement Notes
Verify the specific ordering suffix 'D' corresponds to the SOIC-8 package configuration required for your design. Confirm compliance with DIN EN IEC 60747-17 and UL1577 standards if safety-related certifications are mandatory for your application. Ensure proper handling procedures are followed due to moisture sensitivity classification.
Selection Notes
Select this component when high-speed response and robust magnetic interference resistance are required. It is suitable for designs needing independent high-side and low-side power supplies. Consider the latch functionality if signal holding is necessary. Verify that the input voltage range and isolation requirements align with system specifications.
Part Context
This part belongs to the AMC22C12 family of isolated comparators. It is designed for applications requiring precise voltage monitoring across isolated boundaries. The device integrates internal circuitry to simplify threshold setting while maintaining high reliability in electrically noisy environments.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation.
FAQ
How is the comparison mode determined?
The mode is determined by the voltage on the REF pin. If VREF is greater than 550mV, the negative comparator is disabled, enabling positive-comparator mode. Otherwise, it operates as a window comparator.
What is the function of the LATCH pin?
The LATCH pin selects between transparent mode (when tied to GND2) and latch mode (when high). In latch mode, the output clears on the falling edge of the latch input signal.
