CA3028A
Test Circuits
(Continued)
5kΩ
V
CC
7
C
1
1
L
1
3
ICUT
5
8
6
C
2
1kΩ
L
2
50Ω SIGNAL
SOURCE
(NOTE 8) OR
NOISE DIODE
(NOTE 9)
50Ω RF
VOLTMETER
(NOTE 8) OR
NOISE AMP
(NOTE 9)
V
CC
0.001µF
2kΩ
1kΩ
V
CC
f
(MHz)
10.7
100
NOTES:
C
1
(pF)
C
2
(pF)
L
1
(µH)
3-6
0.2 - 0.5
L
2
(µH)
3-6
0.2 - 0.5
5
0.01
µF
2kΩ
50Ω
1
3
INPUT
0.01µF
ICUT
7
8
0.01
6
µF
30 - 60 20 - 50
2 - 15
2 - 15
50Ω
OUTPUT
0.01µF
8. For Power Gain Test.
9. For Noise Figure Test.
FIGURE 5. POWER GAIN AND NOISE FIGURE TEST CIRCUIT
(DIFFERENTIAL AMPLIFIER CONFIGURATION)
FIGURE 6. OUTPUT POWER TEST CIRCUIT
5kΩ
V
CC
7
C
1
1
50Ω
SIGNAL
SOURCE
L
1
3
ICUT
5
8
6
50Ω RF
VOLTMETER
8
7
OUTPUT
1
0.001µF
2kΩ
INPUT
2
50Ω
0.01µF
3
4
0.01µF
0.01µF
2kΩ
ICUT
5
1kΩ
0.01µF
6
1kΩ LOAD
1kΩ
L
2
C
2
V
CC
10Ω
f
(MHz)
10.7
100
C
1
(pF)
C
2
(pF)
L
1
(µH)
3-6
0.2 - 0.5
L
2
(µH)
3-6
0.2 - 0.5
30 - 60 20 - 50
2 - 15
2 - 15
FIGURE 7. AGC RANGE TEST CIRCUIT (DIFFERENTIAL
AMPLIFIER)
FIGURE 8. TRANSFER CHARACTERISTIC (VOLTAGE GAIN) TEST
CIRCUIT (10.7MHz) CASCODE CONFIGURATION
5
HARRIS [ HARRIS CORPORATION ]
