module V_cont_limited_amp(in,out);
 input in;
 output out;
 voltage in,out;

 parameter real vin_offset = 0,         // input dc offset
                gain       = 1,         // amplifier gain
                vout_max   = 10,        // max. output voltage
                vout_min   = -10 from (-inf:vout_max);  // min. output voltage

 real vin,K,vout_offset;

 analog
 begin
   @(initial_step)
   begin
     K = (vout_max-vout_min)/2;
     vout_offset = K + vout_min;
   end

   vin    =  gain * (V(in)-vin_offset);
   V(out) <+ K*tanh(vin) + vout_offset;
 end
endmodule