CYCLIC DIGITAL TO ANALOG CONVERTER IN PIPELINE STRUCTURE
First Claim
1. A cyclic digital to analog converter (CDAC) in a pipeline structure, the CDAC comprising:
- a first CDAC block which receives a first digital signal and converts the first digital signal to a first analog value, the first CDAC block comprising a charging capacitor for charging according to the first digital signal and a first storing capacitor for storing the first analog value; and
a second CDAC block which receives a second digital signal and converts the second digital signal to a second analog value, the second CDAC block comprising the charging capacitor for charging according to the second digital signal and a second storing capacitor for storing the second analog value;
wherein the first CDAC block and the second CDAC block share the charging capacitor.
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Accused Products
Abstract
A cyclic digital to analog converter (CDAC) in a pipeline structure includes a first CDAC block and a second CDAC block. The first CDAC block receives a first digital signal and converts the first digital signal to a first analog value. The first CDAC block includes a charging capacitor for charging according to the first digital signal and a first storing capacitor for storing the first analog value. The second CDAC block receives a second digital signal and converts the second digital signal to a second analog value. The second CDAC block includes the charging capacitor for charging according to the second digital signal and a second storing capacitor for storing the second analog value. The first CDAC block and the second CDAC block share the charging capacitor.
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Citations
28 Claims
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1. A cyclic digital to analog converter (CDAC) in a pipeline structure, the CDAC comprising:
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a first CDAC block which receives a first digital signal and converts the first digital signal to a first analog value, the first CDAC block comprising a charging capacitor for charging according to the first digital signal and a first storing capacitor for storing the first analog value; and a second CDAC block which receives a second digital signal and converts the second digital signal to a second analog value, the second CDAC block comprising the charging capacitor for charging according to the second digital signal and a second storing capacitor for storing the second analog value; wherein the first CDAC block and the second CDAC block share the charging capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A cyclic digital to analog converter (CDAC) in a pipeline structure, the CDAC comprising:
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a first CDAC block which receives a first digital signal and converts the first digital signal to a first analog value; a second CDAC block which receives a second digital signal and converts the second digital signal to a second analog value; and an amplifier connectable to the first CDAC block and the second CDAC block, the amplifier receiving the first analog value from the first CDAC block and the second analog value from the second CDAC block through an input terminal and outputting an amplified analog value by differentially amplifying the received first analog value or the received second analog value with a reference voltage, wherein the first CDAC block comprises; a first capacitor comprising one terminal that receives the first digital signal and an other terminal connected to a sixth node, which receives the reference voltage, the first capacitor charging according to the first digital signal; a fourth switch comprising one terminal connected to the one terminal of the first capacitor; a second capacitor comprising one terminal connected to an other terminal of the fourth switch, the second capacitor storing the first analog value; a sixth switch comprising one terminal connected to an other terminal of the second capacitor and an other terminal connected to the amplifier input terminal; and an eighth switch comprising one terminal connected to the other terminal of the second capacitor and an other terminal connected to the sixth node; and wherein the second CDAC block comprises; the first capacitor, which receives the second digital signal and charges according to the second digital signal; a third switch comprising one terminal connected to the one terminal of the first capacitor; a third capacitor comprising one terminal connected to an other terminal of the third switch, the third capacitor storing the second analog value; a fifth switch comprising one terminal connected to an other terminal of the third capacitor and an other terminal connected to the amplifier input terminal; and a seventh switch comprising one terminal connected to the other terminal of the third capacitor and an other terminal connected to the sixth node. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification