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
• Functions: * Buffer for impedence matching * Low pass filter * De - emphasis control * Mute control * Reference
voltage circuit ( 1/2 VCC AMP ) • Gain adjustable of audio output • Minimum number of external parts required • 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°C ~ +75°C
BLOCK DIAGRAM
LPF OUTPUT2
LPF2B
VREF
RIPPLE
DE-EMPHA DE-EMPHA DE-EMPHA CTL OUT2 IN3
BUFFER OUT2
INPUT2
20
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