3-1
April 1997
CA3020, CA3020A
8MHz Power Amps For Military,
Industrial and Commercial Equipment
File Number
339.5
Features
High Power Output Class B Amplifier
- CA3020 . . . . . . . . . . . . . . . . . . . . 0.5W (Typ) at V
CC
= 9V
- CA3020A . . . . . . . . . . . . . . . . . . 1.0W (Typ) at V
CC
= 12V
Wide Frequency Range . . Up to 8MHz with Resistive Loads
High Power Gain. . . . . . . . . . . . . . . . . . . . . . . . . 75dB (Typ)
Single Power Supply For Class B Operation With
Transformer
- CA3020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 9V
- CA3020A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3V to 12V
Built-In Temperature-Tracking Voltage Regulator Provides
Stable Operation Over -55
o
C to 125
o
C Temperature Range
Applications
AF Power Amplifiers For Portable and Fixed Sound and
Communications Systems
Servo-Control Amplifiers
Wide-Band Linear Mixers
Video Power Amplifiers
Transmission-Line Driver Amplifiers (Balanced and
Unbalanced)
Fan-In and Fan-Out Amplifiers For Computer Logic Circuits
Lamp-Control Amplifiers
Motor-Control Amplifiers
Power Multivibrators
Power Switches
Description
The CA3020 and CA3020A are integrated-circuit, multi-
stage, multipurpose, wide-band power amplifiers on a single
monolithic silicon chip. They employ a highly versatile and
stable direct coupled circuit configuration featuring wide
frequency range, high voltage and power gain, and high
power output. These features plus inherent stability over a
wide temperature range make the CA3020 and CA3020A
extremely useful for a wide variety of applications in military,
industrial, and commercial equipment.
The CA3020 and CA3020A are particularly suited for service
as class B power amplifiers. The CA3020A can provide a
maximum power output of 1W from a 12V
DC
supply with a
typical power gain of 75dB. The CA3020 provides 0.5W
power output from a 9V supply with the same power gain.
Refer to AN5766 for application information.
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
CA3020
-55 to 125
12 Pin Metal Can
T12.B
CA3020A
-55 to 125
12 Pin Metal Can
T12.B
Pinout
CA3020
(METAL CAN)
TOP VIEW
Schematic Diagram
The resistance values included on the schematic diagram have been supplied as a convenience to assist
Equipment Manufacturers in optimizing the selection of "outboard" components of equipment designs.
The values shown may vary as much as 30%.
Intersil reserves the right to make any changes in the Resistance Values provided such changes do not
adversely affect the published performance characteristics of the device.
12
1
2
3
4
11
10
9
8
7
6
5
V-
RB8
DIFF IN2
DIFF IN3
OUTPUT 4
OUTPUT 5
OUTPUT 6
OUTPUT 7
BUFFER AMP
OUT
BUFFER
V
CC1
RB11
AMP IN
Q
1
R
10
Q
2
Q
3
10
1
3
1.5K
9
8
11
R
11
1.5K
D
1
D
2
D
3
R
4
R
1
R
3
R
6
0.3K
R
9
Q
6
Q
7
Q
4
Q
5
R
5
R
2
R
5
10K
0.47K
12K
12
2
R
8
0.3K
7
6
5
4
[ /Title
(CA30
20,
CA302
0A)
/Sub-
ject
(8MHz
Power
Amps
For
Mili-
tary,
Indus-
trial
and
Com-
mer-
cial
Equip-
ment)
/Autho
r ()
/Key-
words
(Inter-
sil
Corpo-
ration,
Semi-
con-
ductor,
single,
power
ampli-
fier,
class b
ampli-
fier,
mili-
tary
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright Intersil Corporation 1999
3-2
Absolute Maximum Ratings
Operating Conditions
Maximum Pin 9 Supply Voltage, V
CC1
(Note 1)
CA3020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V
CA3020A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Maximum Pin 9 Supply Current, I
CC1
. . . . . . . . . . . . . . . . . . 20mA
Maximum Pin 11 Sink Current, I
11
. . . . . . . . . . . . . . . . . . . . . 20mA
Output Voltage, V
4
and V
7
(Note 1)
CA3020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
CA3020A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Output Current, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA
Input Voltage Range, V
2
, V
3
. . . . . . . . . . . . . . . . . . . . . . . -2V to 2V
Maximum Input Voltage, V
10
(Ref to Pin 1) . . . . . . . . . . . . . . . . -3V
Maximum Source Current, V
1
. . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -55
o
C to 125
o
C
Thermal Information
Thermal Resistance (Typical, Note 2)
JA
(
o
C/W)
JC
(
o
C/W)
Metal Can Package . . . . . . . . . . . . . . .
165
80
Maximum Junction Temperature (Metal CanPackage) . . . . . . . . 175
o
C
Maximum Storage Temperature Range . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. The voltage ratings for Pin 9, Pin 4 and Pin 7 are referenced to the V- (Pin 12). A normal bias configuration for Pin 8 and Pin 11 is shown
in Figure 1B. Refer to Application Note AN5766 for other options.
2.
JA
is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
T
A
= 25
o
C
PARAMETER
SYMBOL
TEST CONDITIONS
CA3020
CA3020A
UNITS
CIRCUIT AND
PROCEDURE
DC SUPPLY
VOLTAGE
FIGURE
V
CC1
V
CC2
MIN
TYP
MAX
MIN
TYP
MAX
Collector-to-Emitter Breakdown
Voltage, Q
6
and Q
7
at 10mA
V
(BR)CER
1A
-
-
18
-
-
25
-
-
V
Collector-to-Emitter Breakdown
Voltage, Q
1
at 0.1mA
V
(BR)CEO
-
-
-
10
-
-
10
-
-
V
Idle Currents, Q
6
and Q
7
I
4
IDLE
I
7
IDLE
7
9.0
2.0
-
5.5
-
-
5.5
-
mA
Peak Output Currents, Q
6
and Q
7
I
4
PK
I
7
PK
7
9.0
2.0
140
-
-
180
-
-
mA
Cutoff Currents, Q
6
and Q
7
I
4
CUTOFF
I
7
CUTOFF
7
9.0
2.0
-
-
1.0
-
-
1.0
mA
Differential Amplifier Current Drain
I
CC1
7
9.0
9.0
6.3
9.4
12.5
6.3
9.4
12.5
mA
Total Current Drain
I
CC1
+
I
CC2
7
9.0
9.0
8.0
21.5
35.0
14.0
21.5
30.0
mA
Differential Amplifier Input
Terminal Voltages
V
2
V
3
7
9.0
2.0
-
1.11
-
-
1.11
-
V
Regulator Terminal Voltage
V
11
7
9.0
2.0
-
2.35
-
-
2.35
-
V
Q
1
Cutoff (Leakage) Currents:
Collector-to-Emitter
I
CEO
-
10.0
-
-
-
100
-
-
100
A
Emitter-to-Base
I
EBO
3.0
-
-
-
0.1
-
-
0.1
A
Collector-to-Base
I
CBO
3.0
-
-
-
0.1
-
-
0.1
A
Forward Current Transfer Ratio,
Q
1
at 3mA
h
FE1
-
6.0
-
30
75
-
30
75
-
Bandwidth at -3dB Point
BW
8
6.0
6.0
-
8
-
-
8
-
MHz
Maximum Power Output for
R
CC
= 130
P
O(MAX)
9
6.0
6.0
200
300
-
200
300
-
mW
9
9.0
9.0
400
550
-
400
550
-
mW
Maximum Power Output for
R
CC
= 200
9
9.0
12.0
-
-
-
800
1000
-
mW
Sensitivity for P
OUT
= 400mW,
R
CC
= 130
e
IN
9
9.0
9.0
-
35
55
-
-
-
mV
Sensitivity for P
OUT
= 800mW,
R
CC
= 200
e
IN
9
9.0
12.0
-
-
-
-
50
100
mV
Input Resistance -
Terminal 3 to Ground
R
IN3
10
6.0
6.0
-
1000
-
-
1000
-
CA3020, CA3020A
3-3
Typical Performance Data
(Note 3) A heat sink is recommended for high ambient temperature operation.
PARAMETER
SYMBOL
CA3020
CA3020A
UNITS
Power Supply Voltage
V
CC1
9.0
9.0
V
V
CC2
9.0
12.0
V
Zero Signal Current
Differential Amplifier
I
CC1
15
15
mA
Output Amplifier
I
CC2
24
24
mA
Maximum Signal Current
Differential Amplifier
I
CC1
16
16.6
mA
Output Amplifier
I
CC2
125
140
mA
Maximum Power Output at THD = 10%
PO
550
1000
mW
Sensitivity
e
IN
35
45
mV
Power Gain
G
P
75
75
dB
Input Resistance
R
IN
55
55
k
Efficiency
45
55
%
Signal-to-Noise Ratio
S/N
70
66
dB
THD at 150mW Level
3.1
3.3
%
Test Signal Frequency from 600
Generator
1000
1000
Hz
Equivalent Collector-to-Collector Load Resistance
R
CC
130
200
NOTE:
3. Refer to Figures 7 through 11 for measurement and symbol information.
Test Circuits and Waveforms
FIGURE 1A. COLLECTOR-TO-EMITTER BREAKDOWN
VOLTAGE (Q
6
AND Q
7
) CIRCUIT
FIGURE 1B. TYPICAL AUDIO AMPLIFIER CIRCUIT UTILIZING
THE CA3020 OR CA3020A AS AN AUDIO
PREAMPLIFIER AND CLASS B POWER AMPLIFIER
FIGURE 1.
1
2
3
4
5
6
7
8
9
10
11
12
V
CC
10mA
V
BR
(CER)
Q
7
CA3020
CA3020A
10mA
V
BR
(CER)
Q
6
1
2
3
4
5
6
7
8
9
11
12
CA3020
CA3020A
10
~
e
IN
3K
1K
510K
5.1K
5
F
6V
5
F
3V
0.01
F
+
-
+
+
-
-
5
F
3V
V
CC1
V
CC2
CA3020, CA3020A
3-4
FIGURE 2A. TEST SETUP
FIGURE 2B. CHARACTERISTICS WITH R
10
SHORTED OUT
FIGURE 2. TYPICAL TRANSFER CHARACTERISTICS
FIGURE 3A. TEST SETUP
FIGURE 3B. CHARACTERISTIC WITH R
10
IN CIRCUIT
FIGURE 3. TYPICAL TRANSFER CHARACTERISTICS
FIGURE 4A. TEST SETUP
FIGURE 4B. CHARACTERISTIC
FIGURE 4. "MINIMUM DRIVE" TYPICAL CURRENT-VOLTAGE SATURATION CURVE
Test Circuits and Waveforms
(Continued)
3
3
10
8
9
7
12
6
5
4
2
1
3
+9V
+2V
I
7
I
4
V
23
+
CA3020
CA3020A
300
200
100
0
PO
WER AMPLIFIER OUTPUT
, I
4
, I
7
(mA)
75
50
25
0
-25
50
75
-25
0
25
I
4
"ON"
I
7
"ON"
DIFFERENTIAL AMPLIFIER INPUT, V
23
(mV)
T
A
= -45
o
C
-45
o
C
25
o
C
125
o
C
125
o
C
25
o
C
3
3
10
8
9
7
12
6
5
4
2
1
3
+9V
+2V
I
7
I
4
V
23
+
CA3020
CA3020A
300
200
100
0
PO
WER AMPLIFIER OUTPUT
, I
4
, I
7
(mA)
75
50
25
0
-25
50
75
-25
0
25
I
4
"ON"
I
7
"ON"
DIFFERENTIAL AMPLIFIER INPUT, V
23
(mV)
T
A
= -45
o
C
-45
o
C
25
o
C
125
o
C
125
o
C
25
o
C
3
10
8
9
7
12
6
5
4
2
1
3
+9V
(MAX I
7
CURRENT
I
7
I
4
CA3020
CA3020A
WITH PIN 2
RETURNED TO GND
THROUGH 10k
)
V
7
V
4
(MAX I
4
CURRENT
WITH PIN 3
RETURNED TO GND
THROUGH 10k
)
10K
300
200
100
0
PO
WER AMPLIFIER OUTPUT
, I
4
, I
7
(mA)
T
A
= 25
o
C
0
1
2
3
4
POWER AMPLIFIER COLLECTOR VOLTAGE, V
4
, V
7
(V)
CA3020, CA3020A
3-5
FIGURE 5A. TEST SETUP
FIGURE 5B. DIFFERENTIAL AMPLIFIER CHARACTERISTICS
OF I
CC1
CURRENT vs V
CC1
VOLTAGE
FIGURE 5C. OUTPUT AMPLIFIER CHARACTERISTICS OF I
CC2
CURRENT vs V
CC1
VOLTAGE
FIGURE 5. ZERO SIGNAL AMPLIFIER CURRENT vs DIFFERENTIAL AMPLIFIER SUPPLY VOLTAGE
FIGURE 6A. TEST SETUP
FIGURE 6B. DIFFERENTIAL AMPLIFIER CHARACTERISTICS
OF I
CC1
CURRENT vs AMBIENT TEMPERATURE
FIGURE 6. ZERO SIGNAL AMPLIFIER CURRENT vs AMBIENT TEMPERATURE
Test Circuits and Waveforms
(Continued)
3
10
8
9
7
12
6
5
4
2
1
3
V
CC1
+2V
I
CC1
I
CC2
CA3020
CA3020A
S
DIFFERENTIAL AMPLIFIER CURRENT (mA)
15
10
5
0
2
4
6
8
10
DIFFERENTIAL AMPLIFIER SUPPLY VOLTAGE (V)
T
A
= 25
o
C
S CLOSED
S OPEN
15
10
5
0
2
4
6
8
10
DIFFERENTIAL AMPLIFIER SUPPLY VOLTAGE (V)
T
A
= 25
o
C
S CLOSED
S OPEN
ZER
O SIGNAL OUTPUT
AMPLIFIER CURRENT (mA)
3
10
8
9
7
12
6
5
4
2
1
3
V
CC1
+2V
I
CC1
I
CC2
CA3020
CA3020A
S
15
10
5
0
-50
TEMPERATURE (
o
C)
S CLOSED
S OPEN
ZER
O SIGNAL DIFFERENTIAL
S CLOSED
-25
0
25
50
75
100
125
150
V
CC1
= 9V
V
CC1
= 6V
V
CC1
= 9V
V
CC1
= 3V
AMPLIFIER CURRENT (mA)
S CLOSED
CA3020, CA3020A
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