audio-pwm.lib

* Audio-PWM with input frequency 1200k, variable duty cycle
.subckt audiopwm outp outn in+ in-
apwm %vd in+ in- dout pwm
.model pwm d_pwm(
+ frequency = 1.2Meg
+ cntl_array = [-1 -0.99 0.99 1]
+ dc_array = [0.01 0.01 0.99 0.99]
+ init_phase = 90
+ rise_delay = 2e-9 fall_delay = 2e-9)

* D to A including inverted output
aout [~dout dout] [outn outp] dac1

.model dac1 dac_bridge(out_low = 0 out_high = 1 out_undef = 0
+ input_load = 5.0e-12 t_rise = 2e-9
+ t_fall = 2e-9)

.ends