Back to results
US 7,804,437 B2Granted
Analog-to-digital converter for accumulating reference voltages successively divided by two
AssigneeSamsung Electronics Co., Ltd.
InventorsGunhee Han, Jeonghwan Lee, Seunghyun Lim
Life of this patent
Estimating the term…
Abstract
An analog-to-digital converter includes a ½ powered signal generator configured to generate divided signals by successively dividing a full scale signal by 2 and output one of the divided signals, an accumulator configured to update a reference signal according to a current divided signal and a current output bit, and a comparator configured to compare the updated reference signal with an input signal and generate a next output bit.
Claims16
An analog-to-digital converter comprising:
- a ½ powered signal generator configured to generate divided signals by successively dividing a full scale signal by 2 and to output one of the divided signals;
- an accumulator configured to update a reference signal according to a current divided signal and a current output bit;
- and
- a comparator configured to compare the updated reference signal with an input signal and generate a next output bit, and
- wherein the ½ powered signal generator includes a first capacitor and a second capacitor which are connected in parallel with each other via a switch, and
- wherein the ½ powered signal generator is configured to generate a voltage of the current divided signal by storing-and-discharging a voltage of a previous divided signal in the first capacitor or in the second capacitor according to switching the switch.
3 more elements
An analog-to-digital conversion method comprising:
- generating divided signals by successively dividing a full scale signal by 2;
- outputting one of the divided signals as a current divided signal;
- updating a reference signal according to the current divided signal and a current output bit;
- and
- comparing an updated reference signal with an input signal and generating a next output bit, wherein the generating divided signals includes generating a voltage of the current divided signal by storing-and-discharging a voltage of a previous divided signal in a first capacitor or in a second capacitor according to switching the switch,
- wherein the first capacitor and the second capacitor are connected in parallel with each other via a switch.
3 more elements
Dependencies are inferred from the claim text.