Listing 2. Simple Differential Pair Circuit—Version 1

Date: Sun Mar 23 12:11:42  1997

Operating point information:

   Node  Voltage
   ----  -------
   q1#base  -5.93782e-04
   q2#base  -5.93782e-04
   out2  2.529395e+00
   out1  2.529395e+00
   V(2)  -5.87903e-06
   V(1)  -5.87903e-06
   vcc   5.000000e+00
   input 0.000000e+00
   vee   -5.00000e+00
   V(3)  -7.55292e-01

   Source   Current
   ------   -------

   vin#branch  -5.87903e-06
   vcc#branch  -9.88242e-04
   vee#branch  1.000000e-03

 BJT models (Bipolar Junction Transistor)
 model           bjt

      type       npn
        is     1e-16
        bf        80
        nf         1
       vaf        50
       ikf         0
       ise         0
        ne       1.5
        br         1
        nr         1
       var         0
       ikr         0
       isc         0
        nc         2
        rb       100
       irb         0
       rbm       100
        re         0
        rc         0
       cje     3e-12
       vje      0.75
       mje      0.33
        tf     3e-10
       xtf         0
       vtf         0
       itf         0
       ptf         0
       cjc     2e-12
       vjc      0.75
       mjc      0.33
      xcjc         1
        tr     6e-09
       cjs     2e-12
       ccs     2e-12
       vjs      0.75
       mjs         0
       xtb         0
        eg      1.11
       xti         3
        fc       0.5
      tnom        27
        kf         0
        af         0

 Resistor models (Simple linear resistor)
 model             R

       rsh         0
    narrow         0
       tc1         0
       tc2         0
      defw     1e-05
BJT: Bipolar Junction Transistor
 device           q2        q1
 model           bjt       bjt
        ic  0.000495  0.000495
        ib  5.88e-06  5.88e-06
        ie   -0.0005   -0.0005
       vbe     0.755     0.755
       vbc     -2.53     -2.53
        gm    0.0191    0.0191
       gpi  0.000227  0.000227
       gmu     1e-12     1e-12
        gx      0.01      0.01
        go  9.41e-06  9.41e-06
       cpi  1.08e-11  1.08e-11
       cmu  1.23e-12  1.23e-12
       cbx         0         0
       ccs     2e-12     2e-12

 Isource: Independent current source
 device          iee
        dc     0.001
     acmag         0
         v     -4.24
         p   0.00424

 Resistor: Simple linear resistor
 device          rl2       rl1       rb2       rb1
 model             R         R         R         R
resistance     5e+03     5e+03         1         1
         i -0.000494 -0.000494 -5.88e-06 -5.88e-06
         p   0.00122   0.00122  3.46e-11  3.46e-11

 Vsource: Independent voltage source
 device          vee       vcc       vin
        dc        -5         5         0
     acmag         0         0         1
         i     0.001 -0.000988 -5.88e-06
         p     0.005   0.00494         0

--------------------------------------------------------------------------
              Simple Differential Pair Circuit -- Version 1
           DC transfer characteristic Sun Mar 23 12:11:42  1997

Legend:  + = v(out1)          * = v(out2)
--------------------------------------------------------------------------
 sweep      v(out1)  0.00e+00  1.00e+00  2.00e+00  3.00e+00  4.00e+00  5.00e+00
----------------------|---------|---------|---------|---------|---------|
-1.500e-01  4.983e+00 *         .         .         .         .        +.
-1.400e-01  4.975e+00 *         .         .         .         .        +.
-1.300e-01  4.963e+00 *         .         .         .         .        +.
-1.200e-01  4.946e+00 .*        .         .         .         .        +.
-1.100e-01  4.921e+00 .*        .         .         .         .        +.
-1.000e-01  4.884e+00 .*        .         .         .         .       + .
-9.000e-02  4.832e+00 . *       .         .         .         .       + .
-8.000e-02  4.757e+00 .  *      .         .         .         .      +  .
-7.000e-02  4.653e+00 .   *     .         .         .         .     +   .
-6.000e-02  4.509e+00 .    *    .         .         .         .    +    .
-5.000e-02  4.317e+00 .      *  .         .         .         .  +      .
-4.000e-02  4.067e+00 .        *.         .         .         +         .
-3.000e-02  3.756e+00 .         .  *      .         .      +  .         .
-2.000e-02  3.386e+00 .         .     *   .         .  +      .         .
-1.000e-02  2.971e+00 .         .         *        +.         .         .
 0.000e+00  2.529e+00 .         .         .    X    .         .         .
 1.000e-02  2.088e+00 .         .         +        *.         .         .
 2.000e-02  1.673e+00 .         .     +   .         .  *      .         .
 3.000e-02  1.304e+00 .         .  +      .         .      *  .         .
 4.000e-02  9.930e-01 .        +.         .         .         *         .
 5.000e-02  7.435e-01 .      +  .         .         .         .  *      .
 6.000e-02  5.513e-01 .    +    .         .         .         .    *    .
 7.000e-02  4.080e-01 .   +     .         .         .         .     *   .
 8.000e-02  3.038e-01 .  +      .         .         .         .      *  .
 9.000e-02  2.295e-01 . +       .         .         .         .       * .
 1.000e-01  1.774e-01 .+        .         .         .         .       * .
 1.100e-01  1.411e-01 .+        .         .         .         .        *.
 1.200e-01  1.160e-01 .+        .         .         .         .        *.
 1.300e-01  9.883e-02 +         .         .         .         .        *.
 1.400e-01  8.705e-02 +         .         .         .         .        *.
 1.500e-01  7.901e-02 +         .         .         .         .        *.
----------------------|---------|---------|---------|---------|---------|
 sweep      v(out1)  0.00e+00  1.00e+00  2.00e+00  3.00e+00  4.00e+00  5.00e+00

CPU time since last call: 0.090 seconds.

Total CPU time: 0.090 seconds.

Current dynamic memory usage = 167936,
Dynamic memory limit = 2147377151.