A BJT Differential Pair

** Circuit Description **
* power supply
Vdd 6 0 DC +5V
Vee 7 0 DC -5V
* input differential signal source
Vd 1 2 DC 0V
* differential pair
Q1 6 1 3 npn_transistor
Q2 6 2 3 npn_transistor
* bias source
I 3 7 DC 1mA
* transistor model statements
.model npn_transistor npn ( Is=14fA Bf=100 VAf=100V )
** Analysis Requests **
.OP
** Output Requests **
.end