KA2803 Overview
The KA2803 is designed for use in earth leakage circuit interrupters, for operation directly off the AC line in breakers. The input of the differential amplifier is connected to the secondary coil of Zero Current Transformer (ZCT). The amplified output of differential amplifier is integrated at external capacitor to gain adequate time delay.
KA2803 Key Features
- Low Power Consumption: 5 mW, 100 V/200 V
- Built-in Voltage Regulator
- High-gain Differential Amplifier
- 0.4 mA Output Current Pulse to Trigger SCRs
- Low External Part Count
- SOP Package, High Packing Density
- High Noise Immunity, Large Surge Margin
- Super Temperature Characteristic of Input Sensitivity
- Wide Operating Temperature Range
- Operation from 12 V to 20 V Input
