# FM_Transmitter ## Description This is one of the simplest FM transmitters that can be built. It does not require any tuning, and transmit frequency is crystal locked to 90MHz. It eliminates frequency drift common to LC-based FM transmitters. This design is best suited for broadcasting voice or music up to a distance of fifty metres depending on the antenna used. ## Project Details - **Owner:** jharwinbarrozo - **Created:** 9/21/2021 - **Last Updated:** 9/21/2021 - **Visibility:** Public ## Key Components ### ? — [+5V Power/Voltage](https://www.flux.ai/adrian95/plus5v-powervoltage~raj.md) **Pins:** - +5V ### ? — [power_+3.3V](https://www.flux.ai/vasyl/powerplus33v~h2.md) **Pins:** - +3V3 ### ? — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### +3v3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage~kqp.md) **Pins:** - +3V3 ### +3V3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage~kqp.md) **Pins:** - +3V3 ### +3V3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage~kqp.md) **Pins:** - +3V3 ### +5V — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage~kqp.md) **Pins:** - +3V3 ### 3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage~kqp.md) **Pins:** - +3V3 ### ANT1 — [Antenna](https://www.flux.ai/jharwinbarrozo/antenna~0u.md) - Impedance: 50Ω **Pins:** - undefined ### J1 — [Microphone](https://www.flux.ai/vasyl/microphone~bdp.md) - Manufacturer Part Number: Microphone - Part Type: Microphone **Pins:** - GND - OUT ### TUNEPAD — [PWR_FLAG](https://www.flux.ai/vasyl/pwrflag~6no.md) - Manufacturer Part Number: PWR_FLAG **Pins:** - pwr ### U1 — [AP2210N-3.3TRG1](https://www.flux.ai/vasyl/ap2210n-33trg1~ywv.md) - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: AP2210N-3.3TRG1 - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2210.pdf - Package or Case Code: SOT-23-3 - Manufacturer Part Number: AP2210N-3.3TRG1 - Manufacturer Name: Diodes Incorporated **Pins:** - GND - VIN - VOUT ### U2 — [MAX2606EUT+T](https://www.flux.ai/adrian95/max2606eutplust~sva.md) - Package or Case Code: SOT-23-6 - Manufacturer Name: Maxim Integrated - Manufacturer Part Number: MAX2606EUT+T - Part Type: Integrated Circuit - Datasheet URL: https://octopart.com/datasheet/max2606eut%2Bt-maxim+integrated-42975119 **Pins:** - GND - IND - OUT- - OUT+ - TUNE - VCC ### U3 — [MAX2606EUT+T](https://www.flux.ai/adrian95/max2606eutplust~sva.md) - Datasheet URL: https://octopart.com/datasheet/max2606eut%2Bt-maxim+integrated-42975119 - Manufacturer Part Number: MAX2606EUT+T - Part Type: Integrated Circuit - Manufacturer Name: Maxim Integrated - Package or Case Code: SOT-23-6 **Pins:** - GND - IND - OUT- - OUT+ - TUNE - VCC ### vcc — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol~qr.md) **Pins:** - P1 ### VCC PAD — [PWR_FLAG](https://www.flux.ai/vasyl/pwrflag~6no.md) - Manufacturer Part Number: PWR_FLAG **Pins:** - pwr ### VR1 — [Potentiometer](https://www.flux.ai/jharwinbarrozo/potentiometer~nk3.md) - Package or Case Code: R_POT_PV36W **Pins:** - undefined - undefined - undefined *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jharwinbarrozo/fmtransmitter~rs](https://www.flux.ai/jharwinbarrozo/fmtransmitter~rs).* --- *Generated from [https://www.flux.ai/jharwinbarrozo/fmtransmitter~rs](https://www.flux.ai/jharwinbarrozo/fmtransmitter~rs)*