| 摘要 |
PCT No. PCT/JP83/00090 Sec. 371 Date Nov. 25, 1983 Sec. 102(e) Date Nov. 25, 1983 PCT Filed Mar. 25, 1983 PCT Pub. No. WO83/03501 PCT Pub. Date Oct. 13, 1983.An analogue to digital converter comprises first and second switches (21:26) for sampling alternately first and second analogue signals, respectively, first and second integrators (22:27) which are supplied with the first and second analogue signals sampled alternately by the first and second switches (21:26), respectively, and produce output voltages varying in response to the first and second analogue signals supplied thereto, a constant current source section (32) operative to supply with a constant current to the first integrator (22) when the first switch (21) is in the OFF state and to the second integrator (27) when the second switch (26) is in the OFF state, and a digital signal generating section (34, 35) which is supplied alternately with comparison outputs obtained by comparing the output voltages of the first and second integrators derived therefrom when the constant current is supplied thereto with a predetermined voltage, respectively, and produces a digital signal corresponding to a duration defined by an instant at which the constant current source section commences supplying the constant current to either the first or second integrator and an instant at which the output voltage of either the first or second integrator, to which the constant current is supplied, reaches the level of the predetermined voltage. |
