Typical Performance Curves
CA3127
TA = 25oC
30 VCE = 6V
RSOURCE = 500Ω
20
f = 10Hz
f = 100Hz
f = 1kHz
10
f = 10kHz
f = 100kHz
0
0.01
0.1
1.0
COLLECTOR CURRENT (mA)
FIGURE 4. NOISE FIGURE vs COLLECTOR CURRENT
TA = 25oC
30 VCE = 6V
RSOURCE = 1kΩ
f = 10Hz
f = 100Hz
20
f = 1kHz
f = 10kHz
10
0
0.01
f = 100kHz
0.1
1.0
COLLECTOR CURRENT (mA)
FIGURE 5. NOISE FIGURE vs COLLECTOR CURRENT
TA = 25oC
VCE = 6V
1.2
1.1
1.0
0.9
0.8
0
12
3456
78
9 10
COLLECTOR CURRENT (mA)
FIGURE 6. GAIN-BANDWIDTH PRODUCT vs COLLECTOR
CURRENT
TA = 25oC
f = 1MHz
2.25
2.00
1.75
CCI
1.50
1.25
1.00
0.75
0.50
CEB
0.25
CCB
0 1 2 3 4 5 6 7 8 9 10
BIAS VOLTAGE (V)
FIGURE 8A. CAPACITANCE vs BIAS VOLTAGE FOR Q2
1.0
TA = -55oC
0.9
0.8
TA = 25oC
0.7
TA = 125oC
0.6
0.5
0.4
0.1
1
10
COLLECTOR CURRENT (mA)
FIGURE 7. BASE-TO-EMITTER VOLTAGE vs COLLECTOR
CURRENT
CAPACITANCE (pF)
CCB
CCE
CEB
CCI
TRAN-
SISTOR PKG TOTAL PKG TOTAL PKG TOTAL PKG TOTAL
BIAS - 6V - 6V - 4V - 6V
(V)
Q1 0.025 0.190 0.090 0.125 0.365 0.610 0.475 1.65
Q2 0.015 0.170 0.225 0.265 0.130 0.360 0.085 1.35
Q3 0.040 0.200 0.215 0.240 0.360 0.625 0.210 1.40
Q4 0.040 0.190 0.225 0.270 0.365 0.610 0.085 1.25
Q5 0.010 0.165 0.095 0.115 0.140 0.365 0.090 1.35
FIGURE 8B. TYPICAL CAPACITANCE VALUES AT f = 1MHz.
THREE TERMINAL MEASUREMENT. GUARD ALL
TERMINALS EXCEPT THOSE UNDER TEST.
5-4