CA3089 Просмотр технического описания (PDF) - Intersil

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Компоненты Описание

производитель

CA3089

FM IF System

Intersil 

Test Applications (Continued)

CA3089

FIGURE 6A. BOTTOM VIEW OF PRINTED CIRCUIT BOARD

FIGURE 6B. COMPONENT SIDE - TOP VIEW

FIGURE 6. ACTUAL SIZE PHOTOGRAPHS OF THE CA3089E AND OUTBOARD COMPONENTS MOUNTED ON A PRINTED-CIRCUIT BOARD

Block Diagram

IF

INPUT

1

3

0.02

0.02µF

µF

2

DELAYED

AGC FOR

RF AMPL

15

10K

V+

TO INTERNAL

11

REGULATORS

QUADRATURE

INPUT

22µH

IF

OUT

8

9

L

(NOTE 16)

C=

100pF

10 REFERENCE

BIAS

IF AMPLIFIER

1ST IF

AMPL.

2ND IF

AMPL.

3RD IF

AMPL.

QUADRATURE

DETECTOR

AFC

AMPL.

AUDIO

AMPL.

LEVEL

DETECTOR

LEVEL

DETECTOR

LEVEL

DETECTOR

LEVEL

DETECTOR

AUDIO

MUTE

(SQUELCH)

CONTROL

AMPL.

FRAME SUBSTRATE

TUNING

METER

CIRCUIT

MUTE (SQUELCH)

DRIVE CIRCUIT

150µA

4

14

METER

13

TO STEREO

THRESHOLD

33K

TUNING METER OUTPUT LOGIC CIRCUITS

NOTES:

15. All resistance values are in ohms.

16. L Tunes with 100pF (C) at 10.7MHz.

17. QO @ 75 (G.I. EX22741 or equivalent).

18. Pin numbers refer to 16 lead DIP.

7

AFC

OUTPUT

6 AUDIO

OUTPUT

MUTING

SENSITIVITY

5

470

12

0.33µF

120K

500K

4

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