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EnglishThe invention relates to a method and circuit for implementing an impedance associated with a monolithically integrated telephone subscriber circuit connected to a telephone line having a pair of terminals. The circuit consists of a resistor connected serially to one terminal of the telephone line, and a series of current mirror circuits. The current mirror circuits are connected in a closed loop configuration to the one terminal of the telephone line. The current mirror circuits divide, by a predetermined factor, the value of the resistor when a DC or very low frequency signal is input to the telephone circuit.
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| Titolo: | Method and circuit for implementing an impedance, in particular for DC telephonic applications | |
| Autori: | ||
| Data di pubblicazione: | 1996 | |
| Abstract: | The invention relates to a method and circuit for implementing an impedance associated with a monolithically integrated telephone subscriber circuit connected to a telephone line having a pair of terminals. The circuit consists of a resistor connected serially to one terminal of the telephone line, and a series of current mirror circuits. The current mirror circuits are connected in a closed loop configuration to the one terminal of the telephone line. The current mirror circuits divide, by a predetermined factor, the value of the resistor when a DC or very low frequency signal is input to the telephone circuit. | |
| Handle: | http://hdl.handle.net/11571/145829 | |
| Appare nelle tipologie: | 6.1 Brevetto |
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