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gEDA-user: Opamp Model vs Open Loop Gain



I was seeing unexpected results from simulating a circuit and decided
to replicate the datasheet.

For the LF353/NS, openloop gain is 115db to 20Hz with a linear drop to
zero at 5MHz, more or less.  Vs=+-15, Rl=2K.

I assumed this to be with the non-inverting input grounded, AC to the
inverting input, and 2K to ground from the output.

I see 15db to 100KHz with a drop to zero at 5MHz.  I expected the
model to be similar to the datasheet.

The circuit is 

* LF353 MODEL TEST vs DATA SHEET
Vin 2 0 DC 0 AC .001 0
Vp  4 0 +15
Vn  5 0 -15
R3  6 0 2K
X1  0 2 4 5 6 LF353/NS
.include ../opamp/lf353_sp3.mod

Spice> run
Spice> ac dec 100 1 10Meg
Spice> plot db(v(6)/v(2))

What am I doing wrong?

tomdean