Ramp generator using operational amplifier based integration and switched capacitor techniques
US8803569B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2013 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jun 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/066
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A ramp generator circuit for generating sawtooth waveforms based on a clock signal may include an operational amplifier, a first switched capacitor device within a first feedback path of the operational amplifier, and a first plurality of switch devices within the first feedback path, whereby upon actuation of the first plurality of switches, the first switched capacitor generates first ramp waveforms during first alternate clock periods of the clock signal. The circuit may also include a second switched capacitor device within a second feedback path of the operational amplifier, and a second plurality of switch devices within the second feedback path, whereby upon actuation of the second plurality of switches, the second switched capacitor generates second ramp waveforms during second alternate clock periods of the clock signal. The first alternate clock periods of the clock are followed by an adjacent one of the second alternate clock periods of the clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.