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Texas Instruments AMC23C11 Precision Isolated Comparator

Texas Instruments AMC23C11 Precision Isolated Comparator has a short response time. The open-drain output is separated from the input circuitry by an isolation barrier highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5kV_RMS according to VDE 0884-17 and UL1577. It also supports a working voltage of up to 1kV_PK.

The trip threshold is adjustable from 20mV to 450mV in low-hysteresis mode and 600mV to 2.7V in high-hysteresis mode through a single external resistor. 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 Texas Instruments AMC23C11 is available in an 8-pin, wide-body SOIC package. It is specified over the extended industrial temperature range of –40°C to +125°C.

Features

3V to 27V wide high-side supply range
2.7V to 5.5V low-side supply range
20mV to 2.7V adjustable threshold
Reference current for threshold adjustment
- 100µA, ±2%
±1% (max.) at 250mV trip threshold error
Open-drain output with optional latch mode
240ns (typ.) propagation delay

55V/ns (min) high CMTI
Safety-related certifications
- 7000V_PK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000V_RMS isolation for 1 minute per UL1577
–40°C to +125°C fully specified over the extended industrial temperature range

Applications

Overcurrent or overvoltage detection in
- Motor drives
- Frequency inverters
- Solar inverters
- DC/DC converters

Texas Instruments AMC23C11 Precision Isolated Comparator

Features

Applications

Functional Block Diuagram

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