ICs for Audio Common Use AN7395K, AN7395S Spatializer IC (3-D Surround) ■ Overview AN7395K Unit: mm 19.1±0.3 20 11 1 10 0.5±0.1 0.90±0.25 ■ Features Seating plane 1.10±0.25 3.45±0.25 1.778 4.50±0.25 6.35±0.30 Spatializer Audio Processor is a signal processing technology, monopolized by Desper Products, Inc., that was developed for commercial electronics and multimedia markets, and is based on Desper's “PRO Spatializer” that is a 3-D audio production system for business use. The AN7395K, AN7395S utilizes the innovative technology adopted in that system, and provides sound enhancement effect and sound expansion with the conventional 2-speaker stereo system. 7.62±0.25 15° 3° to +0.10 0.35 – 0.05 SDIP020-P-0300 • Provides deep 3-D sound with conventional 2speaker system. • The audio signal recorded through this IC can be reproduced with usual stereo system. • Performs optimal processing to the sound source recorded with surround-effect so as not to give double effects. • Sound expansion effect can be varied. • A pseudo stereo effect for the monaural audio signal is achieved. • Positions and moves each sound source on 270° arc in real time. AN7395S Unit: mm 1 10 (0.60) 1.27 0.40±0.25 Seating plane ■ Applications 0.65 0.1±0.1 1.5±0.2 5.4±0.3 7.7±0.3 11 0.15 12.6±0.3 20 0.3 0° to 10° Seating plane SOP020-P-0300B • Televisions, videos, audio equipment, personal computers, and game machines Note) Spatializer and the device trademark of circle-in-square TIM2 11 TIM1 10 VCC 12 L-ret. 9 Space 13 GND 8 Mode 14 R-ret. 7 N.C. 15 6 Set F2 16 R-out 5 VREG 17 S-out 4 F1 18 L-out 3 R-in 19 2 VREF 20 L-in 1 GND ■ Pin Assignment are owned by Desper Products Inc.. This product can be used with the consent of the Desper Products Inc.. Under the terms of the agreement between Matsushita Electronics and Desper Products Inc., no technical information on the Spatializer, which is applied to this product, shall be provided. 1 AN7395K, AN7395S ICs for Audio Common Use ■ Pin Descriptions Pin No. Descriptions Pin No. Descriptions 1 L-in 11 TIM2 2 VREF 12 VCC 3 L-out 13 Space 4 S-out 14 Mode 5 R-out 15 N.C. 6 Set 16 F2 7 R-ret. 17 VREG 8 GND 18 F1 9 L-ret. 19 R-in 10 TIM1 20 GND ■ Absolute Maximum Ratings Parameter Symbol Rating Unit VCC 11 V ICC 100 mA PD 230 mW Topr −25 to +75 °C Tstg −55 to +125 °C Supply voltage Supply current Power dissipation *2 Operating ambient temperature Storage temperature *1 *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: The power dissipation shown is the value for Ta = 75°C ■ Recommended Operating Range Parameter Supply voltage 2 Symbol Range Unit VCC 6.0 to 10.0 V ICs for Audio Common Use AN7395K, AN7395S ■ Electrical Characteristics at VCC = 9 V, f = 1 kHz, Ta = 25°C ± 2°C Parameter Symbol Conditions Min Typ Max Unit 5 11 17 mA ITOTAL VIN = 0 mV VOUT1 L-in, R-in THD = 1% 2.0 2.8 V[rms] VNO1 L-out, R-out RG = 4.7 kΩ 20 100 µV[rms] GV1 L-out, R-out VIN = 400 mV −2 0 2 dB THD1 L-out, R-out VIN = 400 mV 0.05 0.3 % VNO2 S-out RG = 4.7 kΩ 160 600 µV[rms] GV2 S-out VIN = 60 mV 200 280 400 mV[rms] THD2 S-out VIN = 60 mV 0.05 0.3 % VM 4.2 VCC V Off mode switching voltage VOFF 0 0.9 V Stereo mode switching voltage VST 2.1 2.8 V Total circuit current Maximum output voltage Output noise voltage 1 Voltage gain 1 *3 *1, 4 *3 Total harmonic distortion 1 Output noise voltage 2 Voltage gain 2 *2, 3 *1, 5 *6 Total harmonic distortion 2 *2, 6 Mono mode switching voltage Note) *1: In measuring, the filter with A-characteristic curve is used. *2: In measuring, the filter for the range of 15 Hz to 30 kHz (12 dB/OCT) is used. *3: Mode: ST, L-in + R-in, VCA min. *4: Mode: ST, VCA min. *5: Mode: ST, VCA max. *6: Mode: ST, VCA max. for either L-in or R-in. ■ Conceptual Explanation of Spatializer Operation • Normal stereo All sounds are heard from only between two speakers, right and left. • Conventional surround The sound expands toward the outside of the speaker system, but the sound position comes apart mostly in the conventional systems. • Spatializer The sound expands toward the outside of the two speakers, and yet their positions are stable and an expanded, deep sound are gotten. 3 4 R-out S-out L-out L-in 100 µF 100 µF 100 µF 39 nF 1 MΩ 16 F2 5 13 Space GND 8 Note) When switching noise occurs at mode switching, insert a capacitor between pin 14 and GND. 10 µF 11 TIM2 TIM1 10 10 µF 12 L-ret. 9 1 µF 22 µF 14 R-ret. 7 56 nF Mode R-in VCC 150 kΩ 10 nF VR5 kΩ 27 nF 17 VREG 4 15 GND 22 µF 18 F1 19 20 3 Set 6 100 µF VREF 2 22 µF 1 AN7395K, AN7395S ICs for Audio Common Use ■ Application Circuit Example (Basic circuitry) Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. 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