I have a device with TSOP IR sensor (there are no marking on the sensor though). So I guessed it is like TSOP. Because shape looks like same.
It has same components around it like a 5V supply with 10uF and 0.1uF decoupling capacitors. IR output has 560pf filter capacitor to the Gnd. But there's a resistor 5k1 from 5V supply to IR output. What is this for? The sensor module kit and mainboard are connected with 30cm long ordinary wire (not shielded). And the black sensor has pretty small size, comparatively.
- Is the resistor 5k1 there to drive 30cm wire to the board?
- Seeing the tiny size of the black sensor, I also guessed that the sensor just have output transistor as built-in signal booster but do not have collector resistor. So they used it outside on their kit (board). However datasheets of other same type of IR sensor module has around 80k collector resistor as built in booster. But it has very low (5k1) external resistor.
What you think? Please!
I am talking about MX-KONKA618-IR V.4 tiny kit.
It has same components around it like a 5V supply with 10uF and 0.1uF decoupling capacitors. IR output has 560pf filter capacitor to the Gnd. But there's a resistor 5k1 from 5V supply to IR output. What is this for? The sensor module kit and mainboard are connected with 30cm long ordinary wire (not shielded). And the black sensor has pretty small size, comparatively.
- Is the resistor 5k1 there to drive 30cm wire to the board?
- Seeing the tiny size of the black sensor, I also guessed that the sensor just have output transistor as built-in signal booster but do not have collector resistor. So they used it outside on their kit (board). However datasheets of other same type of IR sensor module has around 80k collector resistor as built in booster. But it has very low (5k1) external resistor.
What you think? Please!
I am talking about MX-KONKA618-IR V.4 tiny kit.
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