Ams Ag

Ams Sensors Belgium Bvba

Koen Ruythooren

Guy Meynants

Adi Xhakoni

Pieter De Wit

An image sensor comprises an array comprising rows and columns of pixels, a first number N of connection lines connected to a first number N of pixels of the array, a voltage regulating circuit having an output, a first terminal, and a driver circuit. The driver circuit has a first number N of switches coupled to the first number N of connection lines and to the output of the voltage regulating circuit, and a first number N of further switches coupled to the first number N of connection lines and to the first terminal. The first number N is at least two.

Pixel drive voltage generation using a charge pump

In one embodiment an analog-to-digital converter circuit has an input for receiving a first analog signal level and a second analog signal level, a ramp generator adapted to provide a ramp signal, a comparison unit coupled to the input and the ramp generator, a control unit coupled to the comparison unit the control unit having a counter, the control unit being prepared to enable the counter as a function of a comparison of the ramp signal with the first analog signal level and the second analog signal level, and an output for providing an output digital value as a function of a relationship between the first analog signal level and the second analog signal level. Therein the ramp signal has at least one linearly rising and at least one linearly falling portion and an adjustable shift at a reversal point between the rising and the falling portion of the ramp signal, the shift depending on the number of rising and falling portions of the ramp signal.

Growing community of inventors

Hever, Belgium

Koen Ruythooren