| 摘要 |
PURPOSE:Not only to omit a multiplexer and reduce the number of parts but also to simplify the control, by providing RAM between the sequential approximate register and the D/A converter. CONSTITUTION:When a start command 11 is provided to the sequential approximate register 3, RAM8 becomes a writing mode by a control signal 12, and RAM8 becomes a state that the input and the output are short-circuited in its inside. And the regular A/D conversion is executed by the comparator 1, the sequential approximate register 3 and the D/A converter 2, and its digital value is written in the address designated by the counter 9 of RAM8, by the control signal 12. When the contents of RAM8 are read out by the counter 9 after a prescribed time has passed, a delayed analog signal is received by the terminal 6 through the D/A converter 2 and the simple holding circuit 7. |
