Document
CA3020, CA3020A
April 1997
8MHz Power Amps For Military, Industrial and Commercial Equipment
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.
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
[ /Title (CA30 20, CA302 0A) /Subject (8MHz Power Amps For Military, Industrial and Commercial Equipment) /Autho r () /Keywords (Intersil Corporation, Semiconductor, single, power amplifier, class b amplifier, military
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
PART NUMBER CA3020 CA3020A TEMP. RANGE (oC) -55 to 125 -55 to 125 PACKAGE 12 Pin Metal Can 12 Pin Metal Can PKG. NO. T12.B T12.B
Pinout
CA3020 (METAL CAN) TOP VIEW
VBUFFER AMP OUT DIFF IN2 DIFF IN3 OUTPUT 4 3 4 5 6 7 8 2 12 1 11 RB11 10 9 BUFFER AMP IN VCC1 RB8
Schematic Diagram
9 R10 R11 1.5K 8 11
1.5K
10 Q1 1
D1 D2 D3 Q2 R5 10K Q3 R5 R2 12K 0.47K 12 2 R4 R1 R3 R6
0.3K
R9
4 Q6
Q4
5 6 Q7 7
OUTPUT 5
OUTPUT 7
3
Q5
OUTPUT 6
R8 0.3K
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 1999
File Number
339.5
3-1
CA3020, CA3020A
Absolute Maximum Ratings
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
Operating Conditions
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 operational sections of this specification is not implied.
NOTE.