A MESFET Differential Amplifier

** Circuit Description **
* dc supplies
Vdd 4 0 DC +5V
Vss 5 0 DC -5V
* differential-mode signal level
Vd 101 0 DC 0V
Rd 101 0 1
EV+ 1 100 101 0 +0.5
EV- 2 100 101 0 -0.5
* common-mode signal level
Vcm 100 0 DC 0V
* amplifier circuit
B1 4 1 6 n_mesfet 100
B2 3 2 6 n_mesfet 100
B3 6 5 5 n_mesfet 20
B4 4 3 3 n_mesfet 10
* mesfet model statements (by default, level 1)
.model n_mesfet gasfet (beta=0.1m Vto=-1.0V lambda=0.05)
** Analysis Requests **
.OP
* calculate the large-signal DC transfer characteristics
.DC Vd -5V +5V 50mV
** Output Requests **
.PLOT DC V(3)
.probe
.end