×

Switched capacitor amplifier circuit

  • US 5,475,337 A
  • Filed: 02/21/1995
  • Issued: 12/12/1995
  • Est. Priority Date: 07/24/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A switched capacitor amplifier circuit in which an offset voltage is cancelable, comprising:

  • an operational amplifier provided with a reverse input terminal connected to an input voltage and a non-reverse input terminal connected to a reference voltage, said operational amplifier amplifying a voltage difference between the input voltage and the reference voltage to produce an output voltage at an output terminal of said circuit, to thereby produce the offset voltage due to the voltage difference at the output terminal, anda capacitor added to said operational amplifier, said capacitor being connected between the reverse input terminal and the reference voltage, so that said capacitor serves as a load for said operational amplifier only when the offset voltage is canceled in said circuit.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×