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KA9270D Datasheet

  • KA9270D

  • AUDIO FILTER INTRODUCTION

  • 7頁

  • SAMSUNG   SAMSUNG

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

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