Product details

Number of channels (#) 1 Output type Open-drain Propagation delay time (µs) 0.24 CMTI (Min) (kV/µs) 55 Operating temperature range (C) -40 to 125 Rating Catalog
Number of channels (#) 1 Output type Open-drain Propagation delay time (µs) 0.24 CMTI (Min) (kV/µs) 55 Operating temperature range (C) -40 to 125 Rating Catalog
SOIC (D) 8
  • Wide high-side supply range: 3 V to 27 V
  • Low-side supply range: 2.7 V to 5.5 V
  • Adjustable threshold:
    • Window-comparator mode: ±20 mV to ±300 mV
    • Positive-comparator mode: 600 mV to 2.7 V
  • Reference for threshold adjustment: 100 µA, ±1%
  • Trip threshold error: ±1% (max) at 250 mV
  • Open-drain output with optional latch mode
  • Propagation delay: 280 ns (typ)
  • High CMTI: 55 V/ns (min)
  • Safety-related certifications:
    • 4250-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS isolation for 1 minute per UL1577
  • Fully specified over the extended industrial temperature range: –40°C to +125°C
  • Wide high-side supply range: 3 V to 27 V
  • Low-side supply range: 2.7 V to 5.5 V
  • Adjustable threshold:
    • Window-comparator mode: ±20 mV to ±300 mV
    • Positive-comparator mode: 600 mV to 2.7 V
  • Reference for threshold adjustment: 100 µA, ±1%
  • Trip threshold error: ±1% (max) at 250 mV
  • Open-drain output with optional latch mode
  • Propagation delay: 280 ns (typ)
  • High CMTI: 55 V/ns (min)
  • Safety-related certifications:
    • 4250-VPK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS isolation for 1 minute per UL1577
  • Fully specified over the extended industrial temperature range: –40°C to +125°C

The AMC22C12 is an isolated window comparator with a short response time. The open-drain output is separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 3 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up to 560 VRMS.

The comparison window is centered around 0 V, meaning that the comparator trips if the absolute value of the input voltage exceeds the trip threshold value. The trip threshold is adjustable from 20 mV to 300 mV through a single external resistor and, therefore, the comparison window ranges from ±20 mV to ±300 mV. When the voltage on the REF pin is greater than 550 mV, the negative comparator is disabled and only the positive comparator is functional. The reference voltage in this mode can be as high as 2.7 V. This mode is particularly useful for monitoring voltage supplies.

The open-drain output on the device supports transparent mode (LATCH input tied to GND2) where the output follows the input state, or latch mode, where the output is cleared on the falling edge of the latch input signal.

The AMC22C12 is available in a 8-pin SOIC package and is specified over the extended industrial temperature range of –40°C to +125°C.

The AMC22C12 is an isolated window comparator with a short response time. The open-drain output is separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 3 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, and supports a working voltage of up to 560 VRMS.

The comparison window is centered around 0 V, meaning that the comparator trips if the absolute value of the input voltage exceeds the trip threshold value. The trip threshold is adjustable from 20 mV to 300 mV through a single external resistor and, therefore, the comparison window ranges from ±20 mV to ±300 mV. When the voltage on the REF pin is greater than 550 mV, the negative comparator is disabled and only the positive comparator is functional. The reference voltage in this mode can be as high as 2.7 V. This mode is particularly useful for monitoring voltage supplies.

The open-drain output on the device supports transparent mode (LATCH input tied to GND2) where the output follows the input state, or latch mode, where the output is cleared on the falling edge of the latch input signal.

The AMC22C12 is available in a 8-pin SOIC package and is specified over the extended industrial temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Data sheet AMC22C12 Fast Response, Basic Isolated Window ComparatorWith Adjustable Threshold and Latch Function datasheet (Rev. A) PDF | HTML 03 Aug 2022
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) 05 Aug 2022
Technical article Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) 06 Feb 2015
Technical article Using delta-sigma modulators for isolated high-voltage measurements 09 Jan 2015
Technical article Part III: Get CerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained 02 Dec 2014

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Evaluation board

AMC23C12EVM — AMC23C12 evaluation module for fast-response, reinforced, isolated window comparator

The AMC23C12 evaluation module (EVM) is an platform for evaluating the AMC23C12, which is an isolated window comparator with short response time and latch function. The comparator outputs are separated from the input circuitry by an isolation barrier that is certified to provide (...)

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SOIC (D) 8 View options

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