I have a sensor that measures an analog value and i want a ICs to convert it to TTL serial ,

because i want to send it afterwards via a bluetooth IC that takes TTL serial as input. I already have a working prototype with a µController but i want something more compact and doesn't need to be programmed. What are the keywords that i should use form my research? thank you

  • \$\begingroup\$ Well you have to have a protocol over the rs232 line, that both ends speak. You can for example use a microcontroller that has both adc pins and rs232 interface onboard and write a program that translates the analogue input to whatever protocol you choose over rs232 \$\endgroup\$
    – Dan
    Aug 12, 2015 at 15:22
  • 2
    \$\begingroup\$ Probably no such thing that I've heard of, but depending on requirements and volume you can probably get something like a PIC10F220 factory programmed for under 50 cents in a SOT-23-6 package. \$\endgroup\$
    – PeterJ
    Aug 12, 2015 at 15:28
  • \$\begingroup\$ Of course that's in 1ku or higher quantities for that price, I'm assuming \$\endgroup\$
    – Passerby
    Aug 12, 2015 at 15:30
  • \$\begingroup\$ yes in 1ku or higher quantities \$\endgroup\$ Aug 12, 2015 at 15:34
  • \$\begingroup\$ Also, does the bluetooth take actual rs232 Or does it take ttl level serial \$\endgroup\$
    – Passerby
    Aug 12, 2015 at 15:39

1 Answer 1


Such ICs Are Called As

Analog To Digital Converters

Once your sensor measures the analog signal you need to convert analog signal to digital format and then transmit via Bluetooth since it operates with TTL(Digital) signals whose levels are typically 5V range.

Transistor–transistor logic (TTL) is a class of digital circuits built from bipolar junction transistors (BJT) and resistors.(Source WIKI: https://en.wikipedia.org/wiki/Transistor%E2%80%93transistor_logic)


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