Imported from GitHub: greatfet-hardware/lily · commit df35592 · license BSD-3-Clause

Description

an RF power detecting neighbor

README

Lily

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

potential ICs

• 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

Pin usage

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

Initial calibration data

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