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KA9270D Datasheet(PDF) 1 Page - Samsung semiconductor

Part # KA9270D
Description  AUDIO FILTER INTRODUCTION
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Manufacturer  SAMSUNG [Samsung semiconductor]
Direct Link  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

KA9270D Datasheet(HTML) 1 Page - Samsung semiconductor

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KA9270
AUDIO FILTER
INTRODUCTION
The KA9270 is a monolithic integrated circuit designed for audio
filter. It is used in compact disc player, digital audio tape recorder,
etc.
FEATURES
• Functions:
• Gain adjustable of audio output
• Minimum number of external parts required
• Recommand operation supply voltage range : 5.0 ~ 12.0V
BLOCK DIAGRAM
Device
Package
Operating Temperature
KA9270
20-DlP-300A
KA9270D
20-SOP- 375
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
-
+
-
+
-
+
-
+
-
+
MUTE
SW
DE-EM
SW
-
+
-
+
BUFFER2
BUFFER1
DE-AMP2
DE-AMP1
Vcc
LPF1
LPF2
LPF
OUTPUT2
LPF2B
V
REF
RIPPLE
DE-EMPHA
CTL
DE-EMPHA
OUT2
DE-EMPHA
IN3
BUFFER
OUT2
INPUT2
1/2Vcc-AMP
GND
LPF
OUTPUT1
LPF1B
MUTE
CONTROL
INPUT
DE-EMPHA
CONTROL
INPUT
DE-EMPHA
CTL
DE-EMPHA
OUT1
DE-EMPHA
IN1
BUFFER
OUT1
INPUT1
20
°C ~ +75°C
20-DIP-300A
20-SOP-375
Fig. 1
* Buffer for impedence matching
* Low pass filter
* De - emphasis control
* Mute control
* Reference voltage circuit ( 1/2 VCC AMP )


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