Data Sheet

PN2907A
http://onsemi.com
5
TYPICAL SMALL-SIGNAL CHARACTERISTICS
NOISE FIGURE
V
CE
= 10 Vdc, T
A
= 25°C
Figure 7. Frequency Effects
f, FREQUENCY (kHz)
10
0.01
Figure 8. Source Resistance Effects
R
s
, SOURCE RESISTANCE (OHMS)
NF, NOISE FIGURE (dB)
NF, NOISE FIGURE (dB)
f = 1.0 kHz
I
C
= -50 mA
-100 mA
-500 mA
-1.0 mA
R
s
= OPTIMUM SOURCE RESISTANCE
8.0
6.0
4.0
2.0
0
0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10 20 50 100
10
8.0
6.0
4.0
2.0
0
50 100 200 500 1.0 k 2.0 k 5.0 k 10 k 20 k 50 k
I
C
= -1.0 mA, R
s
= 430 W
-500 mA, R
s
= 560 W
-50 mA, R
s
= 2.7 kW
-100 mA, R
s
= 1.6 kW
Figure 9. Capacitances
REVERSE VOLTAGE (VOLTS)
30
Figure 10. Current-Gain — Bandwidth Product
I
C
, COLLECTOR CURRENT (mA)
C, CAPACITANCE (pF)
-0.1
2.0
Figure 11. “On” Voltage
I
C
, COLLECTOR CURRENT (mA)
-1.0
Figure 12. Temperature Coefficients
I
C
, COLLECTOR CURRENT (mA)
V, VOLTAGE (VOLTS)
T
J
= 25°C
V
BE(sat)
@ I
C
/I
B
= 10
V
CE(sat)
@ I
C
/I
B
= 10
V
BE(on)
@ V
CE
= -10 V
R
q
VC
for V
CE(sat)
f
T
, CURRENT-GAIN — BANDWIDTH PRODUCT (MHz)
COEFFICIENT (mV/ ° C)
20
10
7.0
5.0
3.0
-0.2
-0.3
-0.5
-1.0 -2.0 -3.0 -5.0 -10 -20 -30
400
300
200
100
80
60
40
30
20
-1.0 -2.0 -5.0 -10 -20 -50 -100 -200 -500 -1000
-0.8
-0.6
-0.4
-0.2
0
-0.1 -0.2 -0.5
-1.0 -2.0 -5.0 -10 -20 -50 -100 -200 -500
+0.5
0
-0.5
-1.0
-1.5
-2.0
-2.5
-0.1 -0.2 -0.5
-1.0 -2.0 -5.0 -10 -20 -50 -100 -200 -500
C
eb
C
cb
V
CE
= -20 V
T
J
= 25°C
R
q
VB
for V
BE