Himax Technologies, Inc.

Ncku Research and Development Foundation

Yi-Lun Chiang

Soon-Jyh Chang

Jia-Hui Wang

Wen-Chia Luo

Chuo-Ming Kuo

An amplifier with enhanced slew rate includes an input stage including a first channel coupled to receive differential inputs and a second channel coupled to receive the differential inputs; a middle stage including a first current source coupled to receive outputs of the second channel and electrically connected to power, a second current source coupled to receive outputs of the first channel and electrically connected to ground, and a floating current source electrically connected between the first current source and the second current source; and an output stage coupled to the middle stage to generate an output voltage. A transit circuit is disposed in the input stage or the middle stage, controlled by the output stage, and configured to supply extra current during signal transition of the differential inputs, thereby enhancing the slew rate.

Amplifier with enhanced slew rate

An interfacing circuit adaptable to an analog-to-digital converter (ADC) includes a sample and hold (S/H) circuit; an input switch; an input capacitor with a first end connected to an input end of a comparator of the ADC via the S/H circuit, and with a second end connected to receive an input signal via the input switch; a hold switch connected between the second end of the input capacitor and an original common-mode voltage; a reset switch connected between the input end of the comparator and a target common-mode voltage; and a front switch connected between the first end of the input capacitor and the target common-mode voltage.

Growing community of inventors

Tainan, Taiwan

Yi-Lun Chiang