an RF power detecting GreatFET neighbor
Required KiCad dependency:
https://github.com/greatscottgadgets/gsg-kicad-lib
If you are using git, the preferred way to install gsg-kicad-lib is to use the submodule:
git submodule init && git submodule update
- LTC5507 100 kHz - 1 GHz
- HMC1120LP4E DC - 3.9 GHz
- MAX2016 LF - 2.5 GHz dual channel
- ADL5904 DC - 6 GHz
- AD8363 DC - 6 GHz
- HMC909LP4E DC - 5.8 GHz
| signal | pin | alt1 | alt2 |
|---|---|---|---|
| VOUT | J2.05 | J2.09 | J2.16 |
| ENBL | J1.03 | J1.04 | J1.05 |
| RST | GND | J1.20 | J1.22 |
| Q | J2.17 | J2.18 | |
| Q bar | J2.30 | J2.31 |
Calibration data was taken by driving the RF input of Lily with a function generator creating a 10MHz sine wave at various amplitudes (VPP). The analog voltage output (VRMS) was measured with an oscilloscope and the ADC was used to convert VRMS into a digital measurement. Driving Lily with an input of VPP = 4V resulted in Lily drawing 4mA of supply current. The input should not exceed VPP = 5.62V in order to avoid damaging the board.
| VPP | VRMS | ADC |
|---|---|---|
| 10mV | 25mV | 7 |
| 50mV | 0.258V | 84 |
| 0.1V | 0.478V | 155 |
| 0.2V | 0.697V | 227 |
| 0.3V | 0.830V | 267 |
| 0.5V | 0.988V | 317 |
| 1V | 1.2V | 386 |
| 2V | 1.4V | 454 |
| 3V | 1.57V | 494 |
| 4V | 1.66V | 524 |