Title:
【発明の名称】信号積分器
Document Type and Number:
Japanese Patent JP2721905
Kind Code:
B2
Abstract:
An integrator of a Sigma-Delta modulator includes an amplifier having an inverting input terminal and an output terminal. AN integrating capacitor is coupled between the input and output terminals. An input signal is coupled via a switched capacitor arrangement to the input terminal. The switched capacitor arrangement includes first and second transmission gates, operating at a first frequency, and a second capacitance that are coupled in series. In each period of the operation of the transmission gates, the first transmission gate is turned off before the second transmission gate for preventing a charge injected by the second transmission gate when the second transmission gate is turned off from being coupled to the input terminal of the amplifier.
Inventors:
SAUER DONALD JOHN (US)
Application Number:
JP32573488A
Publication Date:
March 04, 1998
Filing Date:
December 22, 1988
Export Citation:
Assignee:
RCA LICENSING CORP (US)
International Classes:
H03M3/04; G06G7/186; H03F3/345; H03M3/02; (IPC1-7): H03M3/04
Domestic Patent References:
| JP6339216A | ||||
| JP6033739A | ||||
| JP194726A | ||||
| JP1157128A |
Attorney, Agent or Firm:
Hiroshi Tanaka (1 outside)