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ICs for Audio Common Use
AN7395K, AN7395S
Spatializer IC (3-D Surround)
I Overview
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. AN7395K
19.10.3 20 11
Unit: mm
6.350.30
1 10
1.100.25 3.450.25
4.500.25
1.778 0.900.25 Seating plane
0.50.1
3 to
7.620.25 15
0.35 - 0.05
+0.10
I Features
* 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.
SDIP020-P-0300
AN7395S
12.60.3 20 11
Unit: mm
5.40.3 7.70.3
1 10
0.15
(0.60)
1.27 Seating plane
0.400.25
0.65 0.10.1
1.50.2
0.3
0 to 10
Seating plane
I Applications
* Televisions, videos, audio equipment, personal computers, and game machines
SOP020-P-0300B
I Pin Assignment
Space Mode VREG GND R-in F1 TIM2 TIM1
1
N.C.
20
19
18
17
16
15
14
13
12
VCC
F2
VREF
L-in
L-out
S-out
R-out
Set
R-ret.
Note) Spatializer and the device trademark of circle-in-square
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.
L-ret.
GND
10
1
2
3
4
5
6
7
8
9
11
AN7395K, AN7395S
I Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 L-in VREF L-out S-out R-out Set R-ret. GND L-ret. TIM1 Descriptions Pin No. 11 12 13 14 15 16 17 18 19 20
ICs for Audio Common Use
Descriptions TIM2 VCC Space Mode N.C. F2 VREG F1 R-in GND
I Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation
*2 *1
Symbol VCC ICC PD Topr Tstg
Rating 11 100 230 -25 to +75 -55 to +125
Unit V mA mW C C
Operating ambient temperature Storage temperature
*1
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: The power dissipation shown is the value for Ta = 75C
I Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 6.0 to 10.0 Unit V
2
ICs for Audio Common Use
I Electrical Characteristics at VCC = 9 V, f = 1 kHz, Ta = 25C 2C
Parameter Total circuit current Maximum output voltage Output noise voltage 1 Voltage gain 1
*3 *2, 3 *3 *1, 4
AN7395K, AN7395S
Symbol ITOTAL VOUT1 VNO1 GV1 THD1 VNO2 GV2
*2, 6 *1, 5
Conditions VIN = 0 mV L-in, R-in THD = 1% L-out, R-out RG = 4.7 k L-out, R-out VIN = 400 mV L-out, R-out VIN = 400 mV S-out RG = 4.7 k S-out VIN = 60 mV S-out VIN = 60 mV
Min 5 2.0 -2 200 4.2 0 2.1
Typ 11 2.8 20 0 0.05 160 280 0.05
Max 17 100 2 0.3 600 400 0.3 VCC 0.9 2.8
Unit mA V[rms] V[rms] dB % V[rms] mV[rms] % V V V
Total harmonic distortion 1 Output noise voltage 2 Voltage gain 2
*6
Total harmonic distortion 2
THD2 VM VOFF VST
Mono mode switching voltage Off mode switching voltage Stereo 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.
I 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 L-in 22 F VREF 2 100 F L-out 100 F 10 nF S-out 100 F 100 F R-out
39 nF 56 nF
1 GND
20
19 22 F
R-in
AN7395K, AN7395S
3
18 F1
4
17 VREG
I Application Circuit Example (Basic circuitry)
5
16 F2
Set 6 1 M R-ret. 7
15
27 nF
14 VR5 k GND 8 13 Space 22 F L-ret. 9 12 1 F
Mode
Note) When switching noise occurs at mode switching, insert a capacitor between pin 14 and GND.
150 k
VCC
TIM1 10 10 F
11 TIM2 10 F
ICs for Audio Common Use
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. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
Please read the following notes before using the datasheets
A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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