IR Photo diode is used to detect the light rays reflected from an IR LED. Photo diode is a reverse biased PN junction diode. When photo diode is exposed to light, electrical resistance across the diode decreases there by increasing the reverse current. If the photodiode is not exposed to light, resistance across the will be high .hence revers
TSOP is the standard IR remote control receiver series, supporting all major transmission codes. IR receiver or TSOP receiver senses IR pulses and converts them into electrical signals. Each TSOP or IR receiver operates at a specific frequency. Means it detects IR switching ON or OFF at a frequency. The output of IR receiver is active low
The TSOP183B series are miniaturized receivers for infrared remote control systems. PIN diode and preamplifier are assembled on lead frame, the epoxy package is designed as IR filter. The main benefit is the reliable function even in disturbed ambient and the protection against uncontrolled output pulses.