NE687 SERIES
TYPICAL PERFORMANCE CURVES (TA = 25°C)
NE68718
NE68733
INSERTION GAIN vs.
COLLECTOR CURRENT
NOISE FIGURE vs.
COLLECTOR CURRENT
14
4
f = 2 GHz
f = 2 GHz
12
3
2 V
CE = 1 V
10
V
CE = 1 V
CE = 2 V
V
2
V
8
6
4
1
0
1
5
2
10
20 30
100
1
2
5
20
10
100
Collector Current, IC (mA)
Collector Current, IC (mA)
NE68718
D.C. CURRENT GAIN vs.
COLLECTOR CURRENT
GAIN BANDWIDTH PRODUCT
vs. COLLECTOR CURRENT
500
16
14
f = 2 GHz
200
100
12
10
8
2 V
CE = 1 V
V
VCE = 2 V
VCE = 1 V
50
6
20
10
4
2
1
5
100
10
20 30 50
2
1
5
100
2
20
10
50
Collector Current, IC (mA)
Collector Current, IC (mA)
NE68730
FEED-BACK CAPACITANCE vs.
COLLECTOR TO BASE VOLTAGE
COLLECTOR CURRENT vs.
BASE TO EMITTER VOLTAGE
50
40
30
20
0.6
VCE = 2V
f = 1 MHz
0.5
0.4
0.3
0.2
10
0
0.5
1.0
1.0
2.0
3.0
4.0
5.0
Base to Emitter Voltage, VBE (V)
Collector to Base Voltage, VCB (V)
CEL [ CALIFORNIA EASTERN LABS ]
