SUCCESSIVE APPROXIMATION REGISTER ANALOG-TO-DIGITAL CONVERTER
First Claim
1. A successive approximation register analog-to-digital converter comprising:
- first and second capacitor arrays configured to generate first and second level voltages, respectively;
a comparator configured to compare the first and second level voltages to output a comparison signal;
SAR logic configured to generate a digital signal in response to the comparison signal; and
a variable common mode selector configured to compare a first analog input voltage and a common mode voltage and to supply one of the first analog input voltage and the common mode voltage to top plates of the first and second capacitor arrays according to the comparison result.
1 Assignment
0 Petitions
Accused Products
Abstract
A successive approximation register analog-to-digital converter is provided which includes first and second capacitor arrays configured to generate first and second level voltages, respectively; a comparator configured to compare the first and second level voltages to output a comparison signal; SAR logic configured to generate a digital signal in response to the comparison signal; and a variable common mode selector configured to compare a first analog input voltage and a common mode voltage and to supply one of the first analog input voltage and the common mode voltage to top plates of the first and second capacitor arrays according to a comparison result.
7 Citations
9 Claims
-
1. A successive approximation register analog-to-digital converter comprising:
-
first and second capacitor arrays configured to generate first and second level voltages, respectively; a comparator configured to compare the first and second level voltages to output a comparison signal; SAR logic configured to generate a digital signal in response to the comparison signal; and a variable common mode selector configured to compare a first analog input voltage and a common mode voltage and to supply one of the first analog input voltage and the common mode voltage to top plates of the first and second capacitor arrays according to the comparison result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification