LV1050M Datasheet, PDF (1/4 Pages) Sanyo Semicon Device – Dolby Pro Logic Surround Decoder

Ordering number : ENN6628
LV1050M
Bi-CMOS IC
LV1050M
Dolby Pro Logic Surround Decoder
Overview
The LV1050M is a Dolby Pro Logic surround effect
signal-processing Bi-CMOS IC that in addition to
LV1018 and LA2787 function, realizes virtual surround
processing with the use of 5.1ch input signal.
This IC can implement a Dolby Pro Logic surround
system and various digital surround system in just one chip.
Functions and Features
• Pseudo-tap function.
• Built-in input switch for the L, C, R, LS, RS, and LFE
channels.
• Virtual surround function (VDS 2 modes, VDD 1 mode).
• Simulated surround function for Dolby Digital.
• Input and output muting function.
• Reference level : 300 mVrms.
• Operating supply voltage : 8 to 10V.
• Package : QIP80E.
• Adaptive matrix.
• _{Center mode control (Normal/Phantom/Wide).}
• 4ch/3ch logic control.
• Auto balance (ON/OFF).
• Prologic off-mode (Bypass/Full Bypass).
• On-chip memory (8k bit S-RAM).
• Variable delay time.
Dolby surround mode : 15, 20, 25, or 30ms.
Simulated surround mode : 7.5, 15, 20, 25, 30, 40
or 50ms.
• Modified B type noise-reduction.
• Center trim, surround trim (LS-ch, RS-ch) and
LFE trim (0 to -31dB in -1dB steps).
• Input and output filter.
Output : 7kHz L.P.F in dolby surround mode.
Note : Dolby and Double D Symbol are registered
trademarks of Dolby Laboratories Licensing Corporation.
This IC is available only to licensees of Dolby Laboratories
Licensing Corporation. San Francisco, C94103-4813,
USA, from whom licensing and application information
must be obtained.
Package Dimensions
unit : mm
3174-QIP80E
[LV1050M]
23.2
20.0
0.8 0.8 0.35
64
65
1.6
41
0.15
40
5kHz L.P.F in simulated surround mode.
• Built-in VDD.
• Simulated surround function.
Fixed matrix : L+R, L--R.
Front addition : 0, -2, -4 and -6 dB inverted and
non inverted addition.
Reverb function.
• Rear-channel monaural/stereo switching.
Rear addition : 0, -2, -4 and -6 dB inverted and
noninverted addition .
80
1
25
24
2.70
0.8
21.6
SANYO : QIP80E
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
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