HCPL-7840 Overview
The HCPL-7840 isolation amplifier family was designed for current sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-7840. A differential output voltage is created on the other side of the HCPL-7840 optical isolation barrier.
HCPL-7840 Key Features
- 15 kV/μs mon-mode rejection at V = 1000 V CM
- pact, auto-insertable standard 8-pin DIP package
- 0.00025 V/V/°C gain drift vs. temperature
- 0.3 mV input offset voltage
- 100 kHz bandwidth
- 0.004% nonlinearity
- Worldwide safety approval: UL 1577 (3750 Vrms/1 min.)
- Advanced Sigma-Delta (∑-Δ) A/D converter technology
- Fully differential circuit topology
- 0.8 μm CMOS IC technology
