Continuous time programmable analog block architecture
US5574678A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1995 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45471
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A programmable analog circuit apparatus receives a differential analog input signal and provides a processed differential analog output signal. The programmable analog circuit apparatus includes a first input transconductor, a differential amplifiers, and a feedback transconductor. The first input transconductor has a programmable transconductance and includes an input transconductor positive input terminal and an input transconductor negative input terminal and an input transconductor positive output terminal and an input transconductor negative output terminal. The positive and negative input terminals are coupled to receive the differential analog input signal. The differential amplifier includes first and second amplifier input terminals and first and second amplifier output terminals. The positive and negative input transconductor output terminals are coupled to the first and second differential amplifier input terminals. The amplifier output terminals are coupled to the first and second amplifier input terminals. The amplifier provides the processed differential analog output signal via the amplifier output terminals. The feedback transconductor includes a positive feedback t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.