| 摘要 |
PURPOSE:To simplify constitution and to eliminate dispersion due to a temperature characteristic, by using two universal digital-analog conversion ICs. CONSTITUTION:An input digital signal corresponding to each level of the output analog signals of the D/A conversion ICs is generated by a logic circuit consisting of an exclusive OR circuit 2-4 and an inversion circuit 1, etc. The input digital signal is supplied to the inputs of the D/A conversion ICs 5 and 6 of 10 bits. DC level shift circuits 7 and 8 are provided on the output sides of the D/A conversion ICs 5 and 6, and the zero level of an output analog signal can be moved to zero by those circuits.
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