CA3028A Просмотр технического описания (PDF) - Intersil
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CA3028A Datasheet PDF : 10 Pages
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CA3028A
Test Circuits (Continued)
5kΩ
C1
1
L1
3
7
8
ICUT
1kΩ
6
5
50Ω SIGNAL
SOURCE
(NOTE 8) OR
NOISE DIODE
(NOTE 9)
0.001µF
2kΩ
VCC
L2
C2
50Ω RF
VOLTMETER
(NOTE 8) OR
NOISE AMP
(NOTE 9)
f
C1
C2
(MHz) (pF) (pF)
L1
(µH)
10.7 30 - 60 20 - 50 3 - 6
100 2 - 15 2 - 15 0.2 - 0.5
L2
(µH)
3-6
0.2 - 0.5
NOTES:
8. For Power Gain Test.
9. For Noise Figure Test.
FIGURE 5. POWER GAIN AND NOISE FIGURE TEST CIRCUIT
(DIFFERENTIAL AMPLIFIER CONFIGURATION)
VCC
1kΩ
5
0.01
µF
2kΩ 50Ω
1
3
INPUT 0.01µF
VCC
7
ICUT
8
0.01
6 µF
50Ω
OUTPUT
FIGURE 6. OUTPUT POWER TEST CIRCUIT
0.01µF
5kΩ
C1
50Ω
SIGNAL
SOURCE
1
L1
3
7
8
ICUT
1kΩ
6
5
VCC
L2
C2
50Ω RF
VOLTMETER
0.001µF
2kΩ
f
C1
C2
(MHz) (pF) (pF)
L1
(µH)
10.7 30 - 60 20 - 50 3 - 6
100 2 - 15 2 - 15 0.2 - 0.5
L2
(µH)
3-6
0.2 - 0.5
FIGURE 7. AGC RANGE TEST CIRCUIT (DIFFERENTIAL
AMPLIFIER)
VCC
10Ω
1kΩ LOAD
INPUT
50Ω
1
2
0.01µF
3
8
7
6
ICUT
5
4 0.01µF
0.01µF
OUTPUT
1kΩ
2kΩ
0.01µF
FIGURE 8. TRANSFER CHARACTERISTIC (VOLTAGE GAIN) TEST
CIRCUIT (10.7MHz) CASCODE CONFIGURATION
5
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