CMOS peak amplitude detector
US5302863A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C27/026
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A fully-integrated CMOS peak detector stores the peak amplitude of an input signal using an on-chip storage capacitor. The fully-integrated CMOS peak detector includes a delay buffer, a transfer gate and a comparator. A discharge controller is used to step-down the peak amplitude stored on the on-chip storage capacitor some predetermined amount. The discharge controller includes a switched capacitor circuit which is placed in series with the storage capacitor such that the two capacitors act as a capacitive voltage divider to produce a predictable fraction of the acquired peak amplitude. Multiple peaks can be determined and/or stored by using multiple fully-integrated CMOS peak detectors in conjunction with a single comparator. A multiplexer is used in this configuration to control the multiple peak detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.