Document
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 .