Isolation Amplifier Simulation Results. Dec 2007


Bruce Griffiths provided this circuit of an Isolation Amplifier

So, here is the simulation schematic:
Isolation_Amplifier_V1.jpg
And here are the THD results: 

	FOURIER COMPONENTS OF TRANSIENT RESPONSE V(VOUT)

	DC COMPONENT =   1.667336E-02

	HARMONIC   FREQUENCY    FOURIER    NORMALIZED    PHASE        NORMALIZED
	NO         (HZ)     COMPONENT    COMPONENT    (DEG)       PHASE (DEG)

	 1     5.000E+06    1.057E+00    1.000E+00   -1.795E+02    0.000E+00
	 2     1.000E+07    1.035E-03    9.791E-04    3.796E+01    3.970E+02
	 3     1.500E+07    1.024E-02    9.689E-03   -1.791E+02    3.594E+02
	 4     2.000E+07    1.569E-04    1.484E-04   -7.628E+01    6.417E+02
	 5     2.500E+07    4.458E-03    4.218E-03   -2.897E+00    8.946E+02


	TOTAL HARMONIC DISTORTION =   1.061357E+00 PERCENT

Not bad!

And here is the output waveform:

  Isolation_Amplifier_V1_Waveforms.jpg