Systematic derivation of all possible canonic OTA-C sinusoidal oscillators
✍ Scribed by D.R. Bhaskar; M.P. Tripathi; R. Senani
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 802 KB
- Volume
- 330
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
OTA-C oscillators offer many attractive ,features as compared to conventional op-amp based oscillators. They hare now become increasingly important in view of' their adaptability for implementing high,frequency digitally programmable sinusoidal oscillators in CMOS technology. Although several OTA-C oscillator topologies and a few methods oj generating OTA-C oscillators haoe been known earlier, the existing list of OTA-C oscillators is by no means complete. To corer this gap, following a systematic approach, an exhaustice ratalogue of a class of canonic (employing only two capacitors and three OTAs) oscillator circuits has been generated which proride independent control of' the oscillation frequency. Only a,few of these oscillator structures have been known earlier, whereas the remainder of these are completely new. The workability of' all the configurations has been confirmed experimentaily and some sample results are included.