AN7395

ICs for Audio Common Use AN7395K, AN7395S Spatializer IC s Overview AN7395K and AN7395S developed for the consumer electronics and multimedia markets, the Spatializer integrated circuit is based on Desper Prodcts multi-channel PRO Spatializer ® 3D Audio Production System. The AN7395K and AN7395S make use of this innovative technology to enhance and expand the sound from conventional two-speaker systems. AN7395K Unit : mm 1 20 19.1±0.3 s Features • Profound three-dimensional spatial sound with conventional two-speaker system • Audio signal recorded through this IC reproducible by ordinary stereo unit • Optimization of enhancement effect • Sound expansion variably controllable • Pseudo stereo effect with monaural sound signal • Positioning/Shift of individual sound source along 270 degrees arc in real time 10 6.35±0.3 11 1.1±0.25 3.45±0.25 4.5±0.25 + 0.1 5 – 0.0 0.35 3 ~ 15˚ 7.62±0.25 20-Lead SDIP Package (SDIP020-P-0300A) AN7395S 1.778 Unit : mm 1 20 10 11 1.5±0.2 0.3 5.4±0.3 7.7±0.3 20-Lead SOP Package (SOP020-P-0300A) 0.15 0.65 12.6±0.3 0.1±0.1 s Application • Computer sound board • Active speaker system • Multi-media equipment for home • Desk-top type TV meeting unit • HiFi unit (amp., preamp.) • Stereo TV and video • Portable audio equipment • Car audio • Converter for cable or satellite broadcasting • Video game for home and business 1.27 0.4±0.25 0.4 0.5±0.1 0.9±0.25 AN7395K, AN7395S s Application Circuit 27nF + 6.0 ~+10.0 VDC ICs for Audio Common Use 39nF 1MΩ 10µF + 6 SET 11 TIM2 + 10 TIM1 10µF 9 LRET LOUT 3 100µF Left channel output 100µF + + SOUT 4 100µF ROUT 5 10nF 18 22µF + Left Channel Input 22µF + Right Channel Input 19 RIN ((Space)) 13 VREG 17 GND 20 Mode 14 GND 8 VREF 2 + 150kΩ 22µF + 10kΩVR 100µF 56nF to VCC + 1µF Changeover RRET 7 1 LIN F1 16 F2 15 NC 12 VCC AN7395S Surround output + 0 to 0.9V : OFF mode 2.1 to 2.8V : STEREO mode 4.2 to VCC : MONAURAL mode s Product Specification Outline Table Main Characteristics (VCC = 9V, f = 1kHz, Ta = 25˚C) Parameter Total Circuit Current Maximum Input Voltage Output Noise Voltage Note 1) Total Harmonics Distortion Note 2) Input Resistance Symbol Itot Vin (max.) Vno THD RIN Vin= 0mV Lin, Rin THD = 1% Note 3) Lout, Rout Rg = 4.7kΩ Note 4) Lout, Rout Vin = 400mV Note 3) Condition min. 5 2.0 typ. 11 2.8 20 0.05 50 100 0.3 max. 17 Unit mA Vrms µVrms % kΩ Note 1) Measured through filter of A characteristic curve Note 2) Measured through 15Hz to 30kHz (12dB/OCT) filter Note 3) Mode : ST Lin + Rin ((Space)) MIN Note 4) Mode : ST ((Space)) MIN s Operational Description The AN7395K and AN7395S are respectively equipped with the following devices : • Type E Spatializer (Spatial Expansion) It uses the ordinary stereo record and broadcasting as a sound source and can offer sound expansion exceeding speaker location. provides natural sound effect which can not be obtained only with conventional two-speaker stereo system. Sound image positioned at the center does not move at all, and music instruments and sound positioned to left and right surround listeners. The surround stage can be created, exceeding location of two speakers. Real three-dimensional sound field can be created by ambience sound. Listeners feel as if no speakers exist. →It • Type D Spatializer (Directional Positioning) It can position or shift the individual sound source along 270˚ arc in real time for example at game play or reproduction. →The AN7395K and AN7395S can support almost infinitive number of inputs. They require only the function panning these signals between L and R. These ICs can be easily incorporated in the video game machine or sound board of computer and thereby the sound source can be controlled in three dimensions without DSP. • Type S Spatializer (Spatial Synthesis) Though almost all the sound of computer, video game or multi-media uses mono-source, playback is often performed by the stereo unit. The spatializer can give the mono-source profoundness and realism, providing the natural and comfortable pseudo stereo effect. + Right channel output ICs for Audio Common Use s Miscellaneous AN7395K, AN7395S When users use these products, licensing contract should be made with the Desper Products, Inc. For details, refer to the following : JAPAN OFFICE Desper Products Inc. Tokyo Office USA OFFICE Desper Products Inc. SilliconValley Offices Mr. Masaya Ishikawa Far East Manager 1-15-4-201 Sasazuka, Shibuya-ku, Tokyo, 151-0073 Japan TEL : +81-3-5454-1140 FAX : +81-3-5790-5394 E-mail : Mlshi-kawa@classic.msn.com Mr. Mark Markunas OEM Accouunt Manager 453Ranvendale Drive, Suite C Mountain view, CA 94118 TEL : (415)428-0400Ext207 FAX : (415)428-1064 E-mail : mmarkunas@spatializer.com * Spatializer®and are the trademarks of Desper Products Inc. s Printed Circuit Board Layout 10kΩ VR SPATIALIZER® Audio Processor EMR 4.0 (AN7395S) Rin 22µF 22µF Lin 150kΩ 27nF 22µF 10nF 1µF 1µF Rout 100µF 10µF VCC 100µF 10µF Lout 100µF 100µF 39nF 56nF 10µF 1MΩ Sout 100µF