an5285k Panasonic Corporation of North America, an5285k Datasheet

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an5285k

Manufacturer Part Number
an5285k
Description
Sound Level Automatic Gain Control Ic
Manufacturer
Panasonic Corporation of North America
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AN5285K
Manufacturer:
PANASONIC/松下
Quantity:
20 000
ICs for TV
AN5285K
Sound level automatic gain control IC
IC for reducing a difference in volume between broad-
casting stations and between programs. It is a kind of
AGC circuit and reduces a sudden change in sound sig-
nal amplitude by using a proper time constant.
gain at no signal (typ. 20 mV[rms] or less)
means of external resistor.
ral sound system) by two VCAs
Sound level AGC function by VCA gain control
Prevention of S/N ratio degradation by reducing VCA
AGC function can be switched on and off externally.
Operating point of VCA gain lowering is adjustable by
Usable for stereo sound system (also usable for monau-
Televisions and video sets
Overview
Features
Applications
Block Diagram
The AN5285K is a stereo automatic volume control
CTL 7
RIN 10
LIN 1
50 k
50 k
Level
sensor 2
VCA
VCA
CTL
Level
sensor 1
Level
sensor 1
V/l reg.
SW
6.0±0.3
SSIP010-P-0000
(12.0)
3.5±0.25
3
8
10
1
LOUT
ROUT
Unit: mm
1

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an5285k Summary of contents

Page 1

... ICs for TV AN5285K Sound level automatic gain control IC Overview The AN5285K is a stereo automatic volume control IC for reducing a difference in volume between broad- casting stations and between programs kind of AGC circuit and reduces a sudden change in sound sig- nal amplitude by using a proper time constant. ...

Page 2

... AN5285K Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation * Operating ambient temperature * Storage temperature Note Except for the operating ambient temperature, and storage temperature, all ratings are for T Recommended Operating Range Parameter Supply voltage Electrical Characteristics at V Parameter Symbol ...

Page 3

... LIN: Left side input pin CC LSI: CTL AGC level sensor 1 and 2 LOUT: Left side output pin pin REF Reference voltage stability GND: GND pin AN5285K Description Voltage ...

Page 4

... AN5285K Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit 143 143 900 250 9 10 200 1 Description CTL: AGC on/off changeover AGC off at 1 lower 200 7 ROUT: Right side output pin 8 LS2: AGC level sensor 2 ...

Page 5

... ICs for TV Application Circuit Example 4 LIN 50 k CTL 7 4 RIN 50 k VCA Level sensor 1 SW CTL Level sensor 1 VCA Level sensor 2 V/l Reg. AN5285K 4 LOUT 4 ROUT 5 ...

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