Document
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8MHz Power Amps For Military,
November 2000
Industrial and Commercial Equipment
Title A30
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Features
• High Power Output Class B Amplifier - CA3020 . . . . . . . . . . . . . . . . . . . . 0.5W (Typ) at VCC = 9V - CA3020A . . . . . . . . . . . . . . . . . . 1.0W (Typ) at VCC = 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 -55oC to 125oC 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
Ordering Information
TEMP. PART NUMBER RANGE (oC)
PACKAGE
PKG. NO.
CA3020
-55 to 125 12 Pin Metal Can T12.B
CA3020A
-55 to 125 12 Pin Metal Can T12.B
Description
The CA3020 and CA3020A are integrated-circuit, multistage, 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 12VDC 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.
Pinout
CA3020 (METAL CAN)
TOP VIEW
BUFFER AMP OUT
DIFF IN2 2
1
DIFF IN3 3
V-
12 11 RB11
10
BUFFER AMP IN
9 VCC1
OUTPUT 4 4
8 RB8
5 OUTPUT 5
6
7 OUTPUT 7
OUTPUT 6
Schematic Diagram
98
R10 1.5K
R11 1.5K
11
10 D1
Q1 D2
R4 R1
1 D3
R3 R6
3 Q2 Q3
R5 10K
R5 R212K
0.47K
12
2
0.3K R9 Q4
4
Q6 5
Q5 6
R8 0.3K
Q7 7
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.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 2000
1
File Number 339.6
CA3020, CA3020A
Absolute Maximum Ratings
Operating Conditions
Maximum Pin 9 Supply Voltage, VCC1 (Note 1) CA3020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V CA3020A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12V
Maximum Pin 9 Supply Current, ICC1 . . . . . . . . . . . . . . . . . . 20mA Maximum Pin 11 Sink Current, I11 . . . . . . . . . . . . . . . . . . . . . 20mA Output Voltage, V4 and V7 (Note 1)
CA3020 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V CA3020A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V Output Current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300mA Input Voltage Range, V2, V3 . . . . . . . . . . . . . . . . . . . . . . -2V to 2V Maximum Input Voltage, V10 (Ref to Pin 1) . . . . . . . . . . . . . . . . -3V Maximum Source Current, V1 . . . . . . . . . . . . . . . . . . . . . . . . . 1mA
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC
Thermal Information
Thermal Resistance (Typical, Note 2)
θJA (oC/W) θJC (oC/W)
Metal Can Package . . . . . . . . . . . . . . .
165
80
Maximum Junction Temperature (Metal CanPackage) . . . . . . . 175oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . 300oC
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 oper.