KA9270D - Samsung

KA9270D AUDIO FILTER INTRODUCTION

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 adjustabl.

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 19 18 17 16 Vcc 15 14 13 12 11 LPF2 + + 1/2Vcc-AMP DE-AMP2 + + BUFFER2 BUFFER1 + - .