Voltage Control Function Generator Circuit of μA709

Published:2011/6/25 21:45:00 Author:Michel | Keyword: Voltage Control, Function Generator, Circuit | From:SeekIC

The picture 6-50 is the voltage control function generator circuit of μA709.In the circuit,A1 is charge reversal circuit,VT1~VT4 are analog switches,A2 is mueller integral circui,A3 and A4 are PWL comparing circuit,VT6,VT5 and G1-G3 are trigger circuit.VT1 and VT2 analog switches control voltgae UT to control the operational amplifier A1, integrating circuit's intergration composed of timing resistance RT (RT1 and RT2) and the forms of A2 output linear rising and fall.If VT1 conducts,A2 output linear declines because positive step voltgae intergrates.



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