UPC2800A Description
The µ PC2800A is a receiver preamplifier for infrared remote control systems. It can be directly connected to a PIN photodiode and integrates a high-gain first-stage amplifier, limiter, bandpass filter, detection circuit, and waveform shaping circuit to provide a receiver preamplifier on a single chip.
UPC2800A Key Features
- High reliability due to high-frequency lighting fluorescent lamp Internal trap circuit
- Internal bandpass filter Central frequency variable by external resistor: f O = 30 to 80 kHz Few variation of central fr
- Low external ponents Internal output pull-up resistor and power supply filter resistor Only low external capacitance req
- ABLC (Automatic Bias Level Control) circuit Controls fluctuation of bias level cause by disturbance from external light
- Open-collector output Open-collector output (active low) with pull-up resistor (33 k Ω TYP.)