Abstract:
A charge integration algorithmic analog-to-digital converter utilizes one operational amplifier to perform an algorithm analog-to-digital conversation. In a first operating cycle, the ratio of a third capacitor to a fourth capacitor is used as a gain to determine an output voltage and an output bit. The output voltage is held in a first and second capacitors. In the second operating cycle, the ratio of the first capacitor to the second capacitor is used to determine an output voltage and an output bit. The output voltage is held in the third and fourth capacitors. The first and second operating cycles are repeated for generating converted digital data.
Abstract:
A battery-free remote controller includes an antenna, a plurality of key switches, and at least one electronic tag. The antenna is electrically connected to the plurality of key switches, and each electronic tag is electrically connected to the antenna through at least one of the key switches. Each electronic tag is corresponding to a device classification code, and each key switch is corresponding to an operation code. When one of the key switches is turned on, the electronic tag connected to the key switch is electrically connected to the antenna. At this time, the electronic tag uses a radio frequency signal received by the antenna as a power supply to output a remote control code containing the device classification code corresponding to the electronic tag and the operation code corresponding to the key switch, and the antenna transmits the remote control code.