Texas Instruments AMC23C10 Precision Isolated Comparator

Texas Instruments AMC23C10 Precision Isolated Comparator has a short response time designed explicitly for zero-crossing detection of high-voltage signals that must be galvanically isolated from low-voltage circuitry. The open-drain and push-pull outputs are 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 device offers an open-drain and a push-pull output with a propagation delay of less than 320ns. The integrated low-dropout (LDO) regulator supports an operating voltage range of 3V to 27V on the high-voltage side, allowing the comparator to be powered from a wide range of power supplies. The operating voltage range on the low-voltage side is 2.7V to 5.5V. The Texas Instruments AMC23C10 is available in an 8-pin, wide-body SOIC package and 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
±6mV (max) trip threshold error
Open-drain and push-pull output
290ns (typ) propagation delay
High CMTI
- Open drain output - 75V/ns (min)
- Push-pull output - 100V/ns (min)

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

Zero-crossing detection and general-purpose monitoring in:
- Solid-state relays (SSR) and circuit breakers
- Factory automation and control
- Building automation
- Appliances
- DC/DC converters