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MM1454

Q Surround Processor Monolithic IC; 1. Virtual rear speakers allow reproduction of 3-dimensional sound through only two speakers when a Pro Logic encoded source is input.\n2. Also reproduces wide sound for a normal stereo source.\n3. 2ch input - 2ch output.\n4. Few external parts due to use of the active filter created using Mitsumi's bipolar technology.\n5. Low noise design Q Surround ON: 15μVrms OFF: 10μVrms\n6. Simple structure results in small size and low cost.Applications\n1. TV, VCR\n2. Audio equipment\n3. Computer monitors\n4. Active speaker systems;

Outline\nThis is an analog IC virtual surround processor that faithfully reproduces the sound algorithm developed by Q SOUND Labs, Inc.\nIn particular, when a stereo signal (L/Rch) encoded by Dolby Pro Logic is input to this IC, a virtual rear speaker is created spatially, and this allows reproduction of realistic, 3-dimensional sound from two speakers, without the addition of another speaker.\nQ Xpander technology allows deep, spatially wide sound for input of normal stereo signals, as well.\n\n* Virtual Dolby sound is a system developed by Dolby Labs, Inc. that reproduces realistic Pro Logic sound with just two front left and right speakers, so there is no need for the additional two rear speakers and center speaker normally required for Pro Logic sound.\n* Dolby and Dolby Surround are registered trademarks of Dolby Laboratory Licensing Corporation.\n* The Q Surround virtual processor (MM1454) was developed by Mitsumi Electric, and has not received the certification or authorization of Dolby Laboratory.\n* Mitsumi Electric has no business ties or other relationship with Dolby Laboratory.

MM1454

Q Surround Processor

MM145453

液晶顯示驅(qū)動器（LCD 驅(qū)動器）; ? Serial Data Input\n? Wide Power Supply Operation\n? TTL Compatibility\n? Up to 33 LCD Segments\n? Alphanumeric or Bar Graph Capability\n? Cascaded Operation Capability\n? Pin Compatible with MC145453\n;

The MM145453 is a monolithic integrated circuit utilizing CMOS metal gate, low threshold enhancement mode devices. The chip can drive up to 33 LCD segments and can be paralleled to increase this number. The chip is capable of driving a 4? digit 7-segment display with minimal interface between the display and the data source.\nThe MM145453 stores display data in latches after it is clocked in, and holds the data until new display data is received.\nThe MM145453 is available in a molded 44 pin surface mount PLCC package. The MM145453 is pin out and functionally compatible with the MC145453.\n\n

MM145453

Liquid Crystal Display Driver

MM145453

Liquid Crystal Display Driver

MM145453

Liquid Crystal Display Driver

MM145453_00

Liquid Crystal Display Driver

MM145453V

Liquid Crystal Display Driver

MM145453V

Liquid Crystal Display Driver

MM145453V

Liquid Crystal Display Driver