May 1999
OBSOLETE PRODUCT
NO RECOMMENDED REPLACEMENT
Call Central Applications 1-800-442-7747
or email: centapp@harris.com
CA3088E
AM Receiver Subsystem and
General-Purpose Amplifier Array
[ /Title
(CA30
88E)
/Subject
(AM
Receiv
er Subsystem
and
GeneralPurpose
Amplifier
Array)
/Autho
r ()
/Keywords
()
/Creator ()
/DOCI
NFO
pdfmark
[
/PageMode
/UseOutlines
/DOCVIEW
pdfmark
Features
• Excellent Overload Characteristics
• AGC for IF Amplifier
• Buffered Output Signal for Tuning Meter
• Internal Zener Diode Provides Voltage Regulation
• Two IF Amplifier Stages
• Low-Noise Converter and First IF Amplifier
• Low Harmonic Distortion (THD)
• Delayed AGC for RF Amplifier
• Terminals for Optional Inclusion of Tone Control
• Operates from Wide Range of Power Supplies:
V+ = 6V to 16V
• Optional AC and/or DC Feedback on Wide-Band
Amplifier
• Array of Amplifiers for General-Purpose Applications
• Suitable for Use With Optional External RF Stage,
Either MOS or Bipolar
• Related at:
- Refer to AN6022 for Application Note Information
Part Number Information
TEMP.
PART NUMBER
CA3088E -40 to 85 16 Ld PDIP E16.3
RANGE (oC) PACKAGE
PKG.
NO.
Pinout
TOP VIEW
GND
1
2
3
4
5
6
7
8
CONV. BYPASS
CONV. IN
CONV. OUT
1ST IF IN
1ST IF OUT
2ND IF FB
2ND IF IN
Description
The CA3088E, a monolithic integrated circuit, is an AM subsystem that provides the converter, IF amplifier, detector,
and audio preamplifier stages for an AM receiver.
The CA3088E also provides internal AGC for the first IF
amplifier stage, delayed AGC for an optional external RF
amplifier, a buffer stage to drive a tuning meter, and terminals facilitating the optional use of a tone control.
Figure 2 is a functional diagram of the CA3088E. The signal
from the low-noise converter is applied to the first IF amplifier and is then coupled to the second IF amplifier. This IF
signal is then detected and externally filtered. The resultant
audio signal is applied to an audio preamplifier. Optionally, a
tone control circuit may be connected at the junction of the
detector circuit and the audio preamplifier. The gain of the
first IF amplifier stage is controlled by an internal AGC circuit. The CA3088E supplies a delayed AGC signal output for
use with an external RF amplifier. A buffered output signal is
also available for driving a tuning meter. A DC voltage, internally regulated by a Zener diode, supplies the second IF
amplifier, the A GC and tuning meter circuits and ma y also be
used with any other stage.
The CA3088E features four independent transistor amplifiers, each incorporating internal biasing for temperature
tracking. These amplifiers are particularly useful in generalpurpose amplifier, oscillator, and detector applications in a
wide variety of equipment designs.
CA3088E
(PDIP)
16
AUDIO V+
15
AUDIO OUT
14
AUDIO IN
13
RF AGC
12
TUNING METER
AGC FILTER
11
10
2ND IF V+
9
DET. OUT
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
© Harris Corporation 1999
Copyright
8-23
File Number 560.2
CA3088E
Absolute Maximum Ratings T
Supply Voltage
(Across Term. 5 and Terms. 3, 6, 13, 16, Respectively) . . . . . 16V
Output Current
Terminals 3, 6, 13, 16, (Respectively). . . . . . . . . . . . . . . . . 10mA
Terminal 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
=25oC Thermal Information
A
Thermal Resistance (Typical, Note 1) θJA (oC/W)
PDIP Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Maximum Junction Temperature (Plastic Package) . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . 300oC
Operating Conditions
Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . -40oC to 85oC
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:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications T
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
DC CHARACTERISTICS
Voltage (Figure 1) V1, V4, V9, V11Terminals 1, 4, 9, 11 - 0.7 - V
Current (Figure 1) I
DYNAMIC CHARACTERISTICS
= 25oC, V+ = 12V
A
V2, V7, V
V
V
V
3
I
6
I
10
I
13
I
16
8
10
12
15
Terminals 2, 7, 8 - 1.4 - V
Terminal 10 - 5.6 - V
Terminal 12 - 0 - V
Terminal 15 - 3.5 - V
Terminal 3 - 0.35 - mA
Terminal 6 - 1.0 - mA
Terminal 10 - 20 - mA
Terminal 13 - 0 - mA
Terminal 16 - 1.2 - mA
Detector Output (Figure 2) 30% Modulation - 75 - mV
Audio Amplifier Gain (Figure 2) A
AF
Audio Distortion (Figure 2) V
Sensitivity
f = 1kHz - 30 - dB
= 100mV - 0.2 - %
OUT
At Converter Stage Input (Figure 2) - 200 - µV/m
(fIN = 1MHz, Signal-to-Noise Ratio
(S/N) = 20dB))
At RF Stage Input (Figure 2) - 100 - µV/m
Total Harmonic Distortion (Figure 2) THD 30% Modulation - 1.0 - %
Input Resistance
R
IN
At Transistor Q
1
- 3500 - Ω
(No AGC, fIN = 1MHz)
Input Capacitance
At Transistor Q
C
IN
At Transistor Q
5
1
- 2000 - Ω
-17- pF
(No AGC, fIN = 1MHz)
Feedback Capacitance
At Transistor Q
C
FB
At Transistor Q
5
1
-12- pF
- 1.5 - pF
(No AGC, fIN = 1MHz)
At Transistor Q
5
- 1.5 - pF
8-24
RMS