ir receiver
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IC TSOP1738 – 2Pcs
TSOP module has an inbuilt control circuit for amplifying the coded pulses from the IR transmitter. A signal is generated when PIN photodiode receives the signals. This input signal is received by an automatic gain control (AGC). For a range of inputs, the output is fed back to AGC in order to adjust the gain to a suitable level. The signal from AGC is passed to a band pass filter to filter undesired frequencies. After this, the signal goes to a demodulator and this demodulated output drives an npn transistor. The collector output of the transistor is obtained at pin 3 of TSOP module.Members of TSOP17xx series are sensitive to different centre frequencies of the IR spectrum. For example TSOP1738 is sensitive to 38 kHz whereas TSOP1740 to 40 kHz centre frequency.SKU: IC TSOP1738 - 2Pcs - Accessories, Accessories, other ics, Sensors, Transistors
TSOP1838- 2Pcs
Features
- Photodetector and preamplifier circuit in the same casing.
- Receives and amplifies the infrared signal without any external component.
- 5 V output on idle (active at level 0).
- 38 kHz integrated oscillator.
- High sensitivity.
- High level of immunity to ambient light.
- Improved shielding against electrical field interference.
- TTL and CMOS compatibility.
- Applications: infrared remote control.
Technical specification
Supply: 5 V
Power consumption: 0.4 to 1.0 mA
Min. Ee irradiation: 0.35 mW/m2 typ.
Angle of detection: 90
Temperature range: -25 C to +85 CSKU: TSOP1838- 2Pcs