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23 lines
564 B
23 lines
564 B
Level shift by auto-bridges with different VCCs.
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* A level shifter made by placing digital buffers in subcircuits.
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.param vcc=5 ; Circuit-wide default for auto-bridge levels (not used)
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.subckt buffer in out vcc=3 ; These subcircuits default to 3V.
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abuf in out buf
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.ends
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.model buf d_buffer
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vin in 0 sin(1.5 1.5 100k)
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xb1 in mid buffer ; ADC bridge with VCC=3V will be used.
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xb2 mid out buffer vcc=6 ; DAC bridge with 6V swing will be used,
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rload out 0 10k ; Analog node forces bridge insertion,
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.control
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tran 100n 30u
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plot in out
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.endc
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.end
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