HyperionZ
Newbie level 1
Hello Everyone
I'm really stuck on a problem and would appreciate any help on this project I'm building.
The short story: I'm trying to build, or buy, a small and low voltage(3.3V) wideband infrared receiver module that is to be used as a part of infrared remote learning or universal remote control project.
I'm basically looking for something like **broken link removed** that is sensitive to all IR carrier frequencies, but that part seems to be hard to get.
I also do not require the receiver to have a long range of receiption, it only need to be sensitive within 0.5 meter or 1.5 feet or so.
The long story: Please note that I'm NOT looking for a specific carrier frequency integrated module (SFH5110 or TSOP4838, etc), as I don't want to have the signal from the remote demodulated. An example to motivate this: even if a SFH with an internal filter centered at 36KHz would work for a 40Khz remote control (with limited efficiency), it will definetely NOT work well for a 120-khz modulated remote control (yes, they exist, although they are quite rare).
Using multiple SFH-like sensors with different center frequencies is out of the question, so my options are:
1. Try to buy something like TSOP98200 (the link above)
2. Amplify the signal from an ordinary IR photodiode/phototransistor to TTL levels and analyze everything in a microcontroller. Unfortunately, I'm stuck with the amplifier. While the Internet is full of the 3-pin SFH-based schematics, it seems that it's not so easy to find a good IR photodiode/phototransistor amplifier schematic. I also searched this forum, without too much luck though.
So, if you know of any schematic (or, even better, a easier to obtain specialized IC) that does what I need, please let me know. My goal for the final circuit is less than 5 square Centimeters, but I can worry about that later. And also my supply voltage is limited to no more than 3.3V.
Thank you so much in advance for your help.
I'm really stuck on a problem and would appreciate any help on this project I'm building.
The short story: I'm trying to build, or buy, a small and low voltage(3.3V) wideband infrared receiver module that is to be used as a part of infrared remote learning or universal remote control project.
I'm basically looking for something like **broken link removed** that is sensitive to all IR carrier frequencies, but that part seems to be hard to get.
I also do not require the receiver to have a long range of receiption, it only need to be sensitive within 0.5 meter or 1.5 feet or so.
The long story: Please note that I'm NOT looking for a specific carrier frequency integrated module (SFH5110 or TSOP4838, etc), as I don't want to have the signal from the remote demodulated. An example to motivate this: even if a SFH with an internal filter centered at 36KHz would work for a 40Khz remote control (with limited efficiency), it will definetely NOT work well for a 120-khz modulated remote control (yes, they exist, although they are quite rare).
Using multiple SFH-like sensors with different center frequencies is out of the question, so my options are:
1. Try to buy something like TSOP98200 (the link above)
2. Amplify the signal from an ordinary IR photodiode/phototransistor to TTL levels and analyze everything in a microcontroller. Unfortunately, I'm stuck with the amplifier. While the Internet is full of the 3-pin SFH-based schematics, it seems that it's not so easy to find a good IR photodiode/phototransistor amplifier schematic. I also searched this forum, without too much luck though.
So, if you know of any schematic (or, even better, a easier to obtain specialized IC) that does what I need, please let me know. My goal for the final circuit is less than 5 square Centimeters, but I can worry about that later. And also my supply voltage is limited to no more than 3.3V.
Thank you so much in advance for your help.