| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sample hold circuit including a sample hold function and multiplexer function, capable of performing the sample hold function and multiplexer function by only using two-phase signals each having an opposite phase. <P>SOLUTION: Two sample hold circuits 10 and 11 comprise: differential amplifiers A1 and A2 having non-inverting input terminals connected to a reference potential; switches turned on and off in response to a control signal ϕ1 and sampling capacitors C1 and C3; switches turned on and off in response to the control signal ϕ1 and hold capacitors C2 and C4; and switches turned on and off in response to a control signal ϕ2. A multiplexer circuit 12 comprises: a differential amplifier A3 having a non-inverting input terminal connected to the reference potential; switches turned on and off in response to the control signals ϕ1 and ϕ2; a hold capacitor C5 connected to between an output terminal and an inverting input terminal of the differential amplifier A3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
