LV1041M Datasheet, PDF (1/3 Pages) Sanyo Semicon Device – Dolby Prologic Decoder

Ordering number : EN5889
Monolithic Linear IC
LV1041M
Dolby Prologic Decoder
Overview
The LV1041M is a Dolby Prologic Surround signal-
processing IC that implements in a single chip the
functions of the Sanyo LV1016 and LA2786 ICs and
a master volume control for the center and surround
channels. This IC allows both systems of Dolby Prologic
surround and digital surround to be formed into a single
IC.
Features
• Implements a Prologic surround decoder in a single
chip.
• Wide dynamic range
• All modes can be controlled from control data
transmitted serially over four lines: CLOCK, DATA,
ENABLE, and ENABLE2. This function is compatible
with the LV1016 and the LA2786.
Note *: Dolby and the double D symbol are registered
trademarks of the Dolby Laboratories Licensing
Corporation. This IC can only be used by Dolby
licensees. Licensing information and
corresponding technical information is available
from:Dolby Licensing Corporation
San Francisco, CA 94103-4813
USA
Package Dimensions
unit: mm
3174-QFP80E
[LV1041M]
Functions
• Adaptive matrix
• Center mode control (normal, phantom, wide)
• 4/3 channel logic control
• Auto-balance (on/off)
• Prologic off mode (bypass and full bypass)
• Center trim (0 to –31 dB in 1-dB steps)
• On-chip memory: (8K SRAM)
• Variable delay time: 15, 20, 25, 30, 40, or 50 ms (15, 20,
25, or 30 ms for Dolby Prologic surround)
• New A/D and D/A converter circuits adopted
• On-chip Dolby B noise reduction
• On-chip input and output filters
• Built-in V_DD circuit
• Surround trim (0 to –31 dB in 1-dB steps)
• Input and output muting functions
• Master volume control for the center and surround
channels (0 to –44 dB in –2-dB steps, –44 to –76 dB in
–4-dB steps, and muted)
SANYO: QIP80E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
51898RM (OT) No. 5889-1/19