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- Mixed Mode ring oscillator
- *
- *
- * R1
- * +-\/\/\/-+
- * | |
- * | |\ | |\
- * 1 +---| o--+--| o--+ 3
- * | |/ 2 |/ |
- * | 7414 7404 |
- * | || |
- * +-------||-------+
- * ||
- * C1
- *
- *
- *
- .option library expand acct
-
- * We use a schmitt trigger for the input stage
- X1 1 2 7414
- + params: IO_LEVEL=3
- * We use the IO_LEVEL=3 parameter to get an elaborate IO model, with clamping
- * diodes on the inputs, and realistic I-V curves. This is usually
- * important only with capacitively coupled inputs like this one.
-
- * The other stage is a conventional inverter
- X2 2 3 7404
-
- * Feed back resistor and capacitor
- R1 1 2 330
- C1 1 3 1600pF
-
- .probe
- .tran 50ns 5us
- .lib eval.lib
- .plot tran V(1) V(2) V(3)
- .END
-