# 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.md) **Pins:** - +5V ### ? — [power_+3.3V](https://www.flux.ai/vasyl/powerplus33v.md) **Pins:** - +3V3 ### ? — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol.md) **Pins:** - P1 ### +3v3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage.md) **Pins:** - +3V3 ### +3V3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage.md) **Pins:** - +3V3 ### +3V3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage.md) **Pins:** - +3V3 ### +5V — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage.md) **Pins:** - +3V3 ### 3 — [+3V3 Power/Voltage](https://www.flux.ai/adrian95/plus3v3-powervoltage.md) **Pins:** - +3V3 ### ANT1 — [Antenna](https://www.flux.ai/jharwinbarrozo/antenna.md) - Impedance: 50Ω **Pins:** - undefined ### J1 — [Microphone](https://www.flux.ai/vasyl/microphone.md) - Part Type: Microphone - Manufacturer Part Number: Microphone **Pins:** - GND - OUT ### TUNEPAD — [PWR_FLAG](https://www.flux.ai/vasyl/pwrflag.md) - Manufacturer Part Number: PWR_FLAG **Pins:** - pwr ### U1 — [AP2210N-3.3TRG1](https://www.flux.ai/vasyl/ap2210n-33trg1.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/AP2210.pdf - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: AP2210N-3.3TRG1 - Manufacturer Name: Diodes Incorporated - Part Type: Integrated Circuit - Package or Case Code: SOT-23-3 - Manufacturer Part Number: AP2210N-3.3TRG1 **Pins:** - GND - VIN - VOUT ### U2 — [MAX2606EUT+T](https://www.flux.ai/adrian95/max2606eutplust.md) - Manufacturer Name: Maxim Integrated - Manufacturer Part Number: MAX2606EUT+T - Package or Case Code: SOT-23-6 - Datasheet URL: https://octopart.com/datasheet/max2606eut%2Bt-maxim+integrated-42975119 - Part Type: Integrated Circuit **Pins:** - GND - IND - OUT- - OUT+ - TUNE - VCC ### U3 — [MAX2606EUT+T](https://www.flux.ai/adrian95/max2606eutplust.md) - Package or Case Code: SOT-23-6 - Part Type: Integrated Circuit - Datasheet URL: https://octopart.com/datasheet/max2606eut%2Bt-maxim+integrated-42975119 - Manufacturer Name: Maxim Integrated - Manufacturer Part Number: MAX2606EUT+T **Pins:** - GND - IND - OUT- - OUT+ - TUNE - VCC ### vcc — [Power Symbol](https://www.flux.ai/usairemalamgeer/power-symbol.md) **Pins:** - P1 ### VCC PAD — [PWR_FLAG](https://www.flux.ai/vasyl/pwrflag.md) - Manufacturer Part Number: PWR_FLAG **Pins:** - pwr ### VR1 — [Potentiometer](https://www.flux.ai/jharwinbarrozo/potentiometer.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](https://www.flux.ai/jharwinbarrozo/fmtransmitter).* --- *Generated from [https://www.flux.ai/jharwinbarrozo/fmtransmitter](https://www.flux.ai/jharwinbarrozo/fmtransmitter)*