Title:
【発明の名称】分離された主及び修正出力を有するDAC
Document Type and Number:
Japanese Patent JPH11506883
Kind Code:
A
Abstract:
An analog-to-digital (A/D) converter of the successive-approximation type wherein the digital-to-analog converter (DAC) includes a charge-redistribution, binary-weighted switched-capacitor array for producing the analog output for comparison with the analog input signal. A second switched-capacitor DAC is employed to develop error correction signals to be combined with the analog signal from the A/D conversion DAC. The conversion DAC array is connected to one input terminal of the comparator, and the error-correction DAC array is connected to the other comparator input terminal, an arrangement which reduces the number of capacitors required while providing symmetrical capacitance loading of the comparator input circuit.
Inventors:
Timco, Michael, Pea
Application Number:
JP50102097A
Publication Date:
June 15, 1999
Filing Date:
June 03, 1996
Export Citation:
Assignee:
ANALOG DEVICES,INCORPORATED
International Classes:
H03M1/38; H03M1/10; H03M1/74; H03M1/46; (IPC1-7): H03M1/74; H03M1/38
Attorney, Agent or Firm:
Tsuchiya Masaru