Converting module and converting circuit
AssigneeShenzhen Goodix Technology Co., Ltd.
InventorsYa-Nan Wen, Yingsi Liang
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a converting module formed in a first die. The first die is coupled to a bus having a bus bit width. The converting module includes an analog-to-digital converter, configured to generate a first digital signal having a first bit width different from the bus bit width; and a sigma-delta modulator, coupled to the analog-to-digital converter, and configured to generate a second digital signal according to the first digital signal. The second digital signal has a bit width equal to the bus bit width. The sigma-delta modulator includes a filter and a quantizer. The number of bits outputted by the quantizer is equal to the bus bit width.
Claims18
A converting module, formed in a first die, the first die being coupled to a bus, the bus having a bus bit width, the converting module comprising:
- an analog-to-digital converter, configured to receive an analog signal and convert the analog signal to generate a first digital signal, wherein the first digital signal has a first bit width different from the bus bit width;
- and
- a sigma-delta modulator, coupled to the analog-to-digital converter, the sigma-delta modulator configured to generate a second digital signal according to the first digital signal converted from the analog signal by the analog-to-digital converter, wherein the second digital signal has a bit width equal to the bus bit width, the sigma-delta modulator comprises a filter and a quantizer, and a number of bits outputted by the quantizer is equal to the bus bit width.
A converting circuit, comprising:
- a bus, having a bus bit width;
- a first die, fabricated by a first process;
- and
- a second die, fabricated by a second process, the bus being disposed between the first die and the second die, the second die arranged to receive an output signal outputted from the first die through the bus, the output signal having a bit width equal to a bus bit width of the bus disposed between the first die and the second die, wherein the first die comprises:
- an analog-to-digital converter, configured to receive an analog signal and convert the analog signal to generate a first digital signal, wherein the first digital signal has a first bit width different from the bus bit width of the bus disposed between the first die and the second die;
- and
- a sigma-delta modulator, coupled between the analog-to-digital converter and the bus, the sigma-delta modulator configured to generate a second digital signal according to the first digital signal converted from the analog signal by the analog-to-digital converter, and send the second digital signal toward the bus, wherein the second digital signal has a bit width equal to the bus bit width of the bus disposed between the first die and the second die, the sigma-delta modulator comprises a filter and a quantizer, and a number of bits outputted by the quantizer is equal to the bus bit width.
Dependencies are inferred from the claim text.