CA3028A
Test Circuits
V
CC
+
I
6
+
3µF
I
8
-
6
8
-
5
1
6
1
ICUT
8
3
7
I
3
3µF
5kΩ
V
EE
V
CC
I
7
3
2kΩ
1kΩ
V
CC
-
I
1
+
5
ICUT
-
+
-
+
I
5
7 +
-
I
7
NOTE: Power Dissipation
=
I
3
V
EE
+
(
I
6
+
I
8
)V
CC
.
FIGURE 1. INPUT OFFSET CURRENT, INPUT BIAS CURRENT,
POWER DISSIPATION, AND QUIESCENT
OPERATING CURRENT TEST CIRCUIT
V
CC
7
470pF
2
C
1
L
1
4
50Ω SIGNAL
SOURCE
(NOTE 4) OR
NOISE DIODE
(NOTE 5)
3
0.001µF
0.001µF
2kΩ
ICUT
1
5
6
8
C
2
50Ω RF
VOLTMETER
(NOTE 4) OR
NOISE AMP
(NOTE 5)
1kΩ
0.001
µF
FIGURE 2. AGC BIAS CURRENT TEST CIRCUIT (DIFFERENTIAL
AMPLIFIER CONFIGURATION)
V
CC
8
C
1
1
L
1
3
ICUT
5
7
6
C
2
50Ω RF
VOLTMETER
(NOTE 6) OR
NOISE AMP
(NOTE 7)
1kΩ
L
2
L
2
50Ω SIGNAL
SOURCE
(NOTE 6) OR
NOISE DIODE
(NOTE 7)
0.001µF
2kΩ
f
(MHz)
10.7
100
NOTES:
C
1
(pF)
C
2
(pF)
L
1
(µH)
3-5
L
2
(µH)
3-5
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
20 - 60 20 - 60
3 - 30
30 - 60 20 - 50
2 - 15
2 - 15
3 - 30 0.1 - 0.25 0.15 - 0.3
4. For Power Gain Test.
5. For Noise Figure Test.
FIGURE 3. POWER GAIN AND NOISE FIGURE TEST CIRCUIT
(CASCODE CONFIGURATION)
6. For Power Gain Test.
7. For Noise Figure Test.
FIGURE 4. POWER GAIN AND NOISE FIGURE TEST CIRCUIT
(DIFFERENTIAL AMPLIFIER CONFIGURATION
AND TERMINAL 7 CONNECTED TO V
CC
)
4
HARRIS [ HARRIS CORPORATION ]
