Semiconductor
CA3028A
OBSOLETE PRODUCT
[ /Title
(CA30
28A)
/Subject
(Differential/Ca
scode
Amplifier for
Commercial
and
Industrial
Equipment
from
DC to
120M
Hz)
/Autho
r ()
/Keywords
(Harris
Semi-
NO RECOMMENDED REPLACEMENT
Call Central Applications 1-800-442-7747
or email: centapp@harris.com
Differential/Cascode Amplifier for
Commercial and Industrial Equipment
from DC to 120MHz
The CA3028A is a differential/cascodeamplifierdesignedfor
use in communications and industrial equipment operating
at frequencies from DC to 120MHz.
Part Number Information
PART NUMBER
(BRAND)
CA3028A -55 to 125 8 Pin Metal Can T8.C
CA3028AE -55 to 125 8 Ld PDIP E8.3
CA3028AM96
(3028A)
TEMP.
RANGE (oC) PACKAGE
-55 to 125 8 Ld SOIC Tape
and Reel
PKG.
NO.
M8.15
Pinouts
CA3028A
(PDIP, SOIC)
TOP VIEW
1
2
3
4
CA3028A
(METAL CAN)
TOP VIEW
8
1
2
3
4
8
7
6
5
7
6
5
January 1999 File Number 382.5
Features
• Controlled for Input Offset Voltage, Input Offset
Current and Input Bias Current
• Balanced Differential Amplifier Configuration with Controlled Constant Current Source
• Single-Ended and Dual-Ended Operation
Applications
• RF and IF Amplifiers (Differential or Cascode)
• DC, Audio and Sense Amplifiers
• Converter in the Commercial FM Band
• Oscillator
• Mixer
• Limiter
• Related Literature
- Application Note AN5337 “Application of the CA3028
Integrated Circuit Amplifier in the HF and VHF Ranges.”
This note covers characteristics of different operating
modes, noise performance, mixer, limiter, and amplifier
design considerations
Schematic Diagram
(Terminal Numbers Apply to All Packages)
8 6
1
R
1
7
5kΩ
2
Q
1
R
2
2.8kΩ
SUBSTRATE
AND CASE
Q
2
Q
3
R
3
500Ω
3
5
4
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
© Harris Corporation 1999
Copyright
CA3028A
Operating Conditions Thermal Information
Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Thermal Resistance (Typical, Note 1) θJA (oC/W) θJC (oC/W)
Metal Can Package . . . . . . . . . . . . . . . 225 140
PDIP Package . . . . . . . . . . . . . . . . . . . 155 N/A
SOIC Package . . . . . . . . . . . . . . . . . . . 185 N/A
Maximum Junction Temperature (Metal Can Package). . . . . . . .175oC
Maximum Junction Temperature (Plastic Package) . . . . . . . .150oC
Maximum Storage Temperature Range. . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operationofthe
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
Absolute Maximum Voltage Ratings T
The following chart gives the range of voltages which can be applied to the terminalslisted horizontally with
respect to the terminals listed vertically. For example, the voltage range of the horizontal Terminal 4 with
respect to Terminal 2 is -1V to +5V.
TERM
NO.12345678
1 0 to -15 0 to -15 0 to -15 +5 to -5 Note 3 Note 3 +20 to 0 1 0.6 0.1
2 +5 to -11 +5 to -1 +15 to 0 Note 3 +15 to 0 Note 3 2 4 0.1
3 (Note 2) +10 to 0 +15 to 0 +24 to 0 +15 to 0 +24 to 0 3 0.1 23
4 +15 to 0 Note 3 Note 3 Note 3 4 20 0.1
5 +20 to 0 Note 3 Note 3 5 0.6 0.1
6 Note 3 Note 3 6 20 0.1
7 Note 3 7 4 0.1
8 8 20 0.1
NOTES:
2. Terminal No. 3 is connected to the substrate and case.
3. Voltages are notnormally applied betweenthese terminals. Voltagesappearingbetween theseterminals
will be safe, if the specified voltage limits between all other terminals are not exceeded.
Electrical Specifications T
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
= 25oC
A
= 25oC
A
Absolute Maximum
Current Ratings
TERM
NO.
I
IN
mA
I
OUT
mA
DC CHARACTERISTICS
Input Bias Current (Figures 1, 10) I
Quiescent Operating Current (Figures 1,11, 12) I6, I
AGC Bias Current (Into Constant Current Source
Terminal 7) (Figures 2, 13)
Input Current (Terminal 7) I
Power Dissipation (Figures 1, 14) P
I
2
VCC = 6V, VEE = -6V - 16.6 70 µA
I
VCC = 12V, VEE = -12V - 36 106 µA
VCC = 6V, VEE = -6V 0.8 1.25 2.0 mA
8
VCC = 12V, VEE = -12V 2.0 3.3 5.0 mA
VCC = 12V, V
7
VCC = 12V, V
VCC = 6V, VEE = -6V 0.5 0.85 1.0 mA
7
VCC = 12V, VEE = -12V 1.0 1.65 2.1 mA
VCC = 6V, VEE = -6V 24 36 54 mW
T
VCC = 12V, VEE = -12V 120 175 260 mW
= 9V - 1.28 - mA
AGC
= 12V - 1.65 - mA
AGC
CA3028A
Electrical Specifications T
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
DYNAMIC CHARACTERISTICS
Power Gain (Figures 3, 4, 5, 15, 17, 19) G
Noise Figure (Figures 3, 4, 5, 16, 18, 19) NF f = 100MHz, VCC = 9V Cascode - 7.2 9.0 dB
Input Admittance (Figures 20, 21) Y
Reverse Transfer Admittance (Figures 22, 23) Y
Forward Transfer Admittance (Figures 24, 25) Y
= 25oC (Continued)
A
f = 100MHz
P
VCC = 9V
f = 10.7MHz
VCC = 9V
f = 10.7MHz, VCC = 9V Cascode - 0.6 +
11
f = 10.7MHz, VCC = 9V Cascode - 0.0003
12
f = 10.7MHz, VCC = 9V Cascode - 99- j18 - mS
21
Cascode 16 20 - dB
Diff. Amp. 14 17 - dB
Cascode 35 39 - dB
Diff. Amp. 28 32 - dB
Diff. Amp. - 6.7 9.0 dB
j1.6
Diff. Amp. - 0.5 +
j0.5
- j0
Diff. Amp. - 0.01 -
j0.0002
Diff. Amp. - -37 +
j0.5
-mS
-mS
-mS
-mS
-mS
Output Admittance (Figures 26, 27) Y
Output Power (Untuned) (Figures 6, 28) P
AGC Range (Maximum Power Gain to Full Cutoff)
(Figures 7, 29)
Voltage Gain
(Figures 8, 9, 30, 31)
Peak-to-Peak Output Current I
AGC f = 10.7MHz, VCC = 9V Diff. Amp. - 62 - dB
f = 10.7MHz, VCC = 9V Cascode - 0 +
22
f = 10.7MHz, VCC = 9V Diff.Amp., 50Ω
O
A f = 10.7MHz, VCC = 9V,
RL = 1kΩ
P-P
f = 10.7MHz, eIN = 400mV,
Diff. Amp.
-mS
j0.08
Diff. Amp. - 0.04 +
j0.23
- 5.7 - µW
Input-Output
Cascode - 40 - dB
Diff. Amp. - 30 - dB
VCC = 9V 2.0 4.0 7.0 mA
VCC = 12V 3.5 6.0 10 mA
-mS
3