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CA3088E Datasheet, PDF (1/4 Pages) Intersil Corporation – AM Receiver Subsystem and General-Purpose Amplifier Array | |||
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May 1999
CA3088E NO
Call
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AM Receiver Subsystem and
General-Purpose Ampliï¬er Array
[ /Title
(CA30
88E)
/Sub-
ject
(AM
Receiv
er Sub-
sys-
tem
and
Gen-
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Ampli-
ï¬er
Array)
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r ()
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words
()
/Cre-
ator ()
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NFO
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Features
⢠Excellent Overload Characteristics
⢠AGC for IF Ampliï¬er
⢠Buffered Output Signal for Tuning Meter
⢠Internal Zener Diode Provides Voltage Regulation
⢠Two IF Ampliï¬er Stages
⢠Low-Noise Converter and First IF Ampliï¬er
⢠Low Harmonic Distortion (THD)
⢠Delayed AGC for RF Ampliï¬er
⢠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
Ampliï¬er
⢠Array of Ampliï¬ers 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
PART NUMBER
CA3088E
TEMP.
RANGE (oC)
PACKAGE
-40 to 85 16 Ld PDIP
PKG.
NO.
E16.3
Description
The CA3088E, a monolithic integrated circuit, is an AM sub-
system that provides the converter, IF ampliï¬er, detector,
and audio preampliï¬er stages for an AM receiver.
The CA3088E also provides internal AGC for the ï¬rst IF
ampliï¬er stage, delayed AGC for an optional external RF
ampliï¬er, a buffer stage to drive a tuning meter, and termi-
nals 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 ï¬rst IF ampli-
ï¬er and is then coupled to the second IF ampliï¬er. This IF
signal is then detected and externally ï¬ltered. The resultant
audio signal is applied to an audio preampliï¬er. Optionally, a
tone control circuit may be connected at the junction of the
detector circuit and the audio preampliï¬er. The gain of the
ï¬rst IF ampliï¬er stage is controlled by an internal AGC cir-
cuit. The CA3088E supplies a delayed AGC signal output for
use with an external RF ampliï¬er. A buffered output signal is
also available for driving a tuning meter. A DC voltage, inter-
nally regulated by a Zener diode, supplies the second IF
ampliï¬er, the AGC and tuning meter circuits and may also be
used with any other stage.
The CA3088E features four independent transistor ampliï¬-
ers, each incorporating internal biasing for temperature
tracking. These ampliï¬ers are particularly useful in general-
purpose ampliï¬er, oscillator, and detector applications in a
wide variety of equipment designs.
Pinout
CA3088E
(PDIP)
TOP VIEW
CONV. BYPASS 1
CONV. IN 2
CONV. OUT 3
1ST IF IN 4
GND 5
1ST IF OUT 6
2ND IF FB 7
2ND IF IN 8
16 AUDIO V+
15 AUDIO OUT
14 AUDIO IN
13 RF AGC
12 TUNING METER
11 AGC FILTER
10 2ND IF V+
9 DET. OUT
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1999
8-23
File Number 560.2
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