è vuoto
è vuoto Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit!
This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from The Si5351A clock generator is an I2C controller clock generator. It uses the onboard precision clock to drive multiple PLL's and clock dividers using I2C instructions.
By setting up the PLL and dividers you can create precise and arbitrary frequencies. There are three independent outputs, and each one can have a different frequency.
Outputs are 3Vpp, either through a breadboard-friendly header or, for RF work, an optional SMA connector.
We put this handy little chip onto it's own breakout board PCB, with a 3.3V LDO regulator so it can be powered from 3-5VDC.
We also put level shifting circuitry on the I2C lines so you can use this chip safely with 3V or 5V logic.
Best of all, we even have a great tutorial and library to get you started!
Our code is designed for use with the Arduino microcontroller and IDE but is easily ported to your favorite platform with I2C support
Package Included:
1 x SSi5351A I2C Generator Clock Breakout Board
Customer
Recensito negli Stati Uniti il 6 luglio 2024
I've gotten many of these boards. They make a very nice clock source for custom cpu clocks, as a radio vfo, a low power wspr transmitter and anywhere you need a variable output oscillator from (in my case) 100khz thru 100 mhz, although others use these from 8 kc thru 200+ mhz.I've controlled these using various arduinos, microchip pic chips and raspberry pi's. They always work. Arduino software and pi libraries are on github. Pic software is custom to my projects, but there are examples out there.Very useful. I'll be getting more.
JLC
Recensito negli Stati Uniti il 9 novembre 2024
the product is not compatible with Si5351A drivers, which leads me to believe the part is not Si5351A or it is a test reject. For example, to program 37.5MHz output, the SiLabs tool says to set the divider (multiplier) to 675MHz (25x27) and then to divide by 18. This works on genuine Adafruit parts but does not work on these boards. I thought maybe a 27MHz XTAL was put down by mistake but that does not work either. Inspection on the spectrum analyzer reveals that there is an alternating burst of square waves followed by a short interval of 0 followed by the next burst.It may work at lower frequencies but I have not tried it.
T. Biesenbach
Recensito in Germania il 20 aprile 2024
Es tut was es soll zu einem günstigen Preis.
Ron Morell
Recensito negli Stati Uniti il 28 gennaio 2023
It did the work it was purchased to do and it met and exceeded the specifications.
B. S.
Recensito negli Stati Uniti il 27 settembre 2022
This is what you want. Screen tearing? No more?! Just suffer through the agonizing soldering process.
Massimo F.
Recensito in Italia il 21 gennaio 2021
Funziona perfettamente. Per i principianti e' indispensabile l'uso di librerie e programmi di esempio gia' pronti (Arduino o altro). Scrivere in C o C++ le funzioni per gestire via I2C l'impostazione delle frequenze e' piuttosto complicato e richiede una conoscenza approfondita del funzionamento del dispositivo.
Massimo
Recensito in Italia il 23 agosto 2020
Una volta collegato all'Arduino Atmega 2560 ha funzionato al primo colpo utilizzando le librerie AdaFruit quindi è totalmente compatibile.Consiglio di scaricare sal sito della SI il programma che calcola i fattori di moltiplicazione e di divisione per ottenere in uscita le frequenze desiderate.
Riccardo
Recensito in Italia il 14 agosto 2020
La schedina arriva con i connettori dupont e gli sma da saldare.Per che non lo sapesse è in grado di trasmettere radiofrequenza con circa 10mw.Lo sto usando per test su beacon radioamatoriale a 144mhz
MASSIMO
Recensito in Italia il 3 luglio 2020
Il prodotto è conforme alla descrizione. Buon prezzo e arrivo estremamente veloce.
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