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ICs for Audio Common Use
AN7395K, AN7395S
Spatializer IC (3-D Surround)
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
1.10.25 3.450.25
4.500.25
1.778 0.90.25
0.50.1
3 to
7.620.25 1 5
0.35 - 0.05
+0.1
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. AN7395S
12.60.3 20
SDIP020-P-0300 Unit: mm
11
5.40.3 7.70.3
1
10
1.50.2
0.15
0.3
0.4
1.27
0.400.25
Applications
* Televisions, videos, audio equipment, personal computers, and game machines
SOP020-P-0300B Note) The packages (SDIP020-P-0300 and SOP020-P-0300B) of this product will be changed to lead-free type (SDIP020-P-0300A and SOP020-P-0300E). See the new package dimensions section later of this datasheet.
Pin Assignment
VREG GND R-in
Space
Mode
0.65 0.10.1
20
19
18
F1
17
16
15
14
13
12
L-in
R-ret.
R-out
L-ret.
L-out
S-out
Set
GND
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 Electric and Desper Products Inc., no technical information on the Spatializer, which is applied to this product, shall be provided.
TIM1
VREF
10
1
2
3
4
5
6
7
8
9
11
TIM2
N.C.
VCC
F2
Publication date: October 2002
SDC00025BEB
1
AN7395K, AN7395S
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 TIM2 VCC Space Mode N.C. F2 VREG F1 R-in GND Descriptions
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
Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 6.0 to 10.0 Unit V
2
SDC00025BEB
AN7395K, AN7395S
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
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.
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.
SDC00025BEB
3
4 L-in 22 F VREF 2 100 F L-out 100 F 10 nF S-out 100 F 100 F R-out 5 16 F2 4 17 VREG 3 18 F1 22 F 19 GND 1 20 R-in
AN7395K, AN7395S
Application Circuit Example (Basic circuitry)
39 nF
56 nF
Set 6 15
Note) When switching noise occurs at mode switching, insert a capacitor between pin 14 and GND.
SDC00025BEB
27 nF 1 M R-ret. 7 14 VR5 k GND 8 13 Space 22 F L-ret. 9 12 1 F
Mode
150 k
VCC
TIM1 10 10 F
11 TIM2 10 F
AN7395K, AN7395S
New Package Dimensions (Unit: mm)
* SDIP020-P-0300A (Lead-free package)
19.060.30 20 11
1
10
3.550.20 1.100.25
3.450.25
4.500.25
6.350.20
0.25 -0.05
7.62
+0.10
(1.529)
1.778
0.500.10 0.900.10 3 to 15 Seating plane
* SOP020-P-0300E (Lead-free package)
12.630.20 20 11
5.500.20
7.600.30
+0.1 0.15-0.05
0
0 to 10 0.300.20 1 10 1.27
(0.60)
Seating plane
0.100.10
1.500.20
0.40+0.10 -0.05
Seating plane
SDC00025BEB
5
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 circuits examples of the products. It neither warrants non-infringement of intellectual property right or any other rights owned by our company or a third party, nor grants any license. (3) We are not liable for the infringement of rights owned by a third party arising out of the use of the product or technologies as described in this material. (4) 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. (5) The products and product specifications described in this material are subject to change without notice for 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. (6) 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, take into the consideration of incidence of break down and failure mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products. (7) When using products for which damp-proof packing is required, observe the conditions (including shelf life and amount of time let standing of unsealed items) agreed upon when specification sheets are individually exchanged. (8) This material may be not reprinted or reproduced whether wholly or partially, without the prior written permission of Matsushita Electric Industrial Co., Ltd.
2002 JUL

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