The ADC AD7791 is the most important part of the RF power sensor – apart from the diode detector. It has to convert the output voltage of the diode detector accurately and with very low fluctuations into digital values.At low input powers, the input voltages Read More …
Schlagwort: AD7791
Reviving a USB power sensor Mini-Circuits PWR-SEN-6G+, Part V: 3.3V-5V
The old MCU ran directly from the USB Bus voltage, namely ~4.75…5V.All the peripherals had to be connected to the same voltage, because this was also the I/O voltage of the MCU. Now the situation is different: The Raspberry Pico runs on 3.3V and has Read More …
Reviving a USB power sensor Mini-Circuits PWR-SEN-6G+, Part II: Detective Work
The integrated circuits are small, but all have markings that can be clearly seen with the help of a magnifying glass: CY7C63743: The CY7C63743 is a „enCoRe™ USB Combination Low-Speed USB and PS/2 Peripheral Controller“ The part is obsolete, but its datasheet can still be Read More …