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UPC1857ACT Datasheet

  • UPC1857ACT

  • SOUND CONTROL IC WITH SURROUND AND I2C BUS

  • 44頁(yè)

  • NEC   NEC

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DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
碌
PC1857A
2
SOUND CONTROL IC WITH SURROUND AND I C BUS
DESCRIPTION
The
碌
PC1857A is a sound control IC with I
2
C bus.
It has functions to control volume, balance, and tone, and a phase shift matrix surround function.
The surround function achieves wide sound expansion using only two front speakers. Three modes can be
selected: movie mode that increases the presence of sound with stereo sound input, music mode emphasizing vocal
music, and simulated mode that gives expansion and left and right sound depth with monaural sound input.
The
碌
PC1857A can perform all control (mode switching, volume control and so on) using I
2
C.
FEATURES
鈥?Volume control function
鈥?Balance control function
: Attenuation adjustable from 0 to
鈭?0
dB in 64 steps
: The difference in attenuation adjustable from 0 to
鈭?0
dB in 64 steps
鈥?Tone (bass, treble) control function : Adjustable in 32 steps from +10 to
鈭?0
dB
鈥?Surround function (gain adjustable) : Three modes (movie, music, and simulated)
鈥?Mute function
鈥?Mixing function
鈥?Output selection function (for two mono channels input)
鈥?All parameters can be controlled via I
2
C bus.
APPLICATIONS
鈥?TV, PC monitor
ORDERING INFORMATION
Part Number
Package
30-pin plastic shrink DIP (400 mil)
碌
PC1857ACT
The information in this document is subject to change without notice.
Document No. S12453EJ1V1DS00 (1st edition)
Date Published March 1998 N CP(K)
Printed in Japan
漏
1997

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