AT-36408 Typical Large Signal Impedances
VCE = 4.8 V, ICQ = 50 mA, Pulsed Operation, Pout = +35.0 dBm
Freq.
MHz
880
890
900
910
915
920
Γ source
Mag.
Ang.
0.882
0.885
0.887
0.890
0.891
0.893
-170.0
-170.5
-171.1
-171.4
-169.0
-168.4
Γ load
Mag.
Ang.
0.847
0.849
0.851
0.853
0.854
0.855
172.7
172.2
171.6
171.1
168.4
168.2
20
19
18
17
16
15
14
13
12
0
2
4
6
8
10
Vcb (V)
Figure 7. Collector-Base Capacitance
vs. Collector-Base Voltage (DC Test).
SPICE Model Parameters
Die Model
CPad
C
CPad
B
CPad
Die Area = 1.2
CPad = 0.3 pF
E1
E2
Label
BF
IKF
ISE
NE
VAF
NF
TF
XTF
VTF
ITF
PTF
XTB
BR
IKR
ISC
NC
VAR
NR
Value
280
299.9
9.9E-11
2.399
33.16
0.9935
1.6E-11
0.006656
0.02785
0.001
23
0
54.61
81
8.7E-13
1.587
1.511
0.9886
Label
TR
EG
IS
XTI
CJC
VJC
MJC
XCJC
FC
CJE
VJE
MJE
RB
IRB
RBM
RE
RC
Value
1E-9
1.11
3.598E-15
3
0.8E-12
0.4831
0.2508
0.001
0.999
6.16E-12
1.186
0.5965
0.752
0
0.01
1.27
0.107
Packaged Model
Rlead
B
Cpkg1
Llead
Lwire
Rwire
Lwire
Rwire
Cpkg2
Rlead
E1
Llead
Cpkg1
Cpkg2
Rlead
C
Llead
Cpkg1
Rlead
E2
Cpkg2
Llead
Lwbase
Rwbase
Lwbase
Cbase Rwbase
Lwbase
L=0 Rwbase
R= 1 Ω
Lwbase
Rwbase
Cbase
L=0
R=1 Ω
Die
Lwbb
Rwbb
LE1 LE2
Die
Lwbb LE1 LE2
Rwbb
Die
Lwbb LE1 LE2
Rwbb
Die
LE1 LE2
Label
Rlead
Llead
Rwire
Lwire
Cpkg1
Cpkg2
LE1
Value
0.63 Ω
1.45 nH
1.3 Ω
0.52 nH
0.4 pF
1.2 pF
0.3 nH
Label
LE2
Cbase
Rwbase
Lwbase
Rwbb
Lwbb
Value
0.00064 nH
46.0 pF
0.2 Ω
1.19 nH
0.1 Ω
0.1 nH
4-84