ca3088e Intersil Corporation, ca3088e Datasheet

ca3088e

Manufacturer Part Number

ca3088e

Description

Receiver Subsystem General-purpose Amplifier Array

Manufacturer

Intersil Corporation

Datasheet

1.CA3088E.pdf (4 pages)

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May 1999

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

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:

• Optional AC and/or DC Feedback on Wide-Band

• Array of Ampliﬁers for General-Purpose Applications

• Suitable for Use With Optional External RF Stage,

• Related at:

Part Number Information

Pinout

CA3088E

PART NUMBER

V+ = 6V to 16V

Ampliﬁer

Either MOS or Bipolar

- Refer to AN6022 for Application Note Information

Harris Corporation 1999

RANGE (

-40 to 85

TEMP.

16 Ld PDIP

PACKAGE

CONV. BYPASS

CONV. OUT

1ST IF OUT

2ND IF FB

2ND IF IN

CONV. IN

1ST IF IN

GND

E16.3

PKG.

NO.

TOP VIEW

CA3088E

(PDIP)

8-23

Description

The CA3088E, a monolithic integrated circuit, is an AM sub-

system 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 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 ﬁrst IF ampli-

ﬁer 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 cir-

cuit. 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, inter-

nally regulated by a Zener diode, supplies the second IF

ampliﬁer, the AGC and tuning meter circuits and may also be

used with any other stage.

The CA3088E features four independent transistor ampliﬁ-

ers, each incorporating internal biasing for temperature

tracking. These ampliﬁers are particularly useful in general-

purpose ampliﬁer, oscillator, and detector applications in a

wide variety of equipment designs.

AUDIO V+

AUDIO OUT

AUDIO IN

RF AGC

TUNING METER

AGC FILTER

2ND IF V+

DET. OUT

General-Purpose Ampliﬁer Array

AM Receiver Subsystem and

CA3088E

File Number

560.2

Related parts for ca3088e

ca3088e Summary of contents

Page 1

... Figure functional diagram of the CA3088E. The signal from the low-noise converter is applied to the ﬁrst IF ampli- ﬁer and is then coupled to the second IF ampliﬁer. This IF signal is then detected and externally ﬁ ...

Page 2

... IN Input Capacitance C IN (No AGC 1MHz) IN Feedback Capacitance C FB (No AGC 1MHz) IN CA3088E o Thermal Information C Thermal Resistance (Typical, Note 1) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Junction Temperature (Plastic Package 150 Maximum Storage Temperature Range . . . . . . . . . -65 Maximum Lead Temperature (Soldering 10s 300 12V ...

Page 3

... F OSC. TUNING 3 GANG 2 0.05 CONVERTER TO RF STAGE OF ANTENNA CA3088E 1 0.01 AGC AMPLIFIER RF AGC NOTE: Resistance values are in . Capacitance values in F, except as noted. FIGURE 2. FUNCTIONAL BLOCK DIAGRAM OF THE CA3088E CA3088E V+ = 12V CA3088E 330 ...

Page 4

... 6. 700 5. SUBSTRATE FIGURE 3. SCHEMATIC DIAGRAM OF THE CA3088E CA3088E 2ND IF AMPLIFIER 6 8 INPUT OUTPUT 5.6V R 200 ...

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