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ICs for Audio Common Use
AN7399S
Spatializer sound processor IC
I Overview
A spatializer audio processor is the Desper Inc.'s proprietary signal processing technology exclusively developed for the consumer electronics and multimedia market. It is based on the Desper's professional 3D audio production system "PROSpatializer". You can enjoy a sound enhancement and extension effect with the conventional two-speaker stereo system by using the innovative technology adopted in this equipment.
16 10.090.20 (0.60) 9 (1.05)
Unit: mm
4.300.20
6.400.30
0.15-0.05
+0.10
0 to 10 0.500.20
1 (0.60) 1.27
8 0.40+0.10 -0.05
I Features
* Fewer external parts (minimum parts count: 4) * Wide operating supply voltage: 4.5 V to 10 V * A sound source in the center position is necessarily positioned in center regardless of the spatializer effect value.
Seating plane
0.100.10
1.500.20
Seating plane
SOP016-P-0225F
I Applications
* Radio cassette recorder, stereo-sound TV and VCR, personal computer, active speaker
I Pin Assignment
SPON/OFF LCNF2 LCNF1
LOUT
LIN1
LIN2
16
15
14
13
12
11
10
R
1
2
3
4
5
6
7
RCNF2
ROUT
GND
VREF
RCNF1
RIN1
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.
RIN2
N.C.
8
9
N.C.
VCC
1
AN7399S
I Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 RCNF1 RIN1 RIN2 GND VREF RCNF2 ROUT N.C. Description Pin No. 9 10 11 12 13 14 15 16
ICs for Audio Common Use
Description N.C. LOUT LCNF1 SPON/OFF VCC LIN2 LIN1 LCNF2
I Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation Operating ambient temperature Storage temperature
* *
Symbol VCC ICC PD Topr Tstg
Rating 10.5 3.0 31.5 -25 to +75 -55 to +150
Unit V mA mW C C
Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C.
I Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 4.5 to 10.0 Unit V
I Electrical Characteristics at VCC = 9 V, freq. = 1 kHz, Ta = 25C
Parameter Off mode gain
*1 *1 *1
Symbol VFFG THDFF THDON NFF NON CT mode)*1 VMAX ITOTAL VOFF VON
Conditions VIN = 1 V[rms], f = 1 kHz VIN = 1 V[rms], f = 1 kHz VIN = 0.4 V[rms], f = 1 kHz VIN = 0 mV[rms], RG = 4.7 k VIN = 0 mV[rms], RG = 4.7 k VIN = 1 V[rms], f = 1 kHz THD = 1%, f = 1 kHz VIN = 0 mV[rms]
Min -1 2.0 0.8 0.0 2.7
Typ 0 0.01 0.02 5 7 -95 2.4 1.4
Max 1 0.05 0.1 15 20 -75 2.0 0.5 VCC
Unit dB % % V[rms] V[rms] dB V[rms] mA V V
Off mode total harmonic distortion On mode total harmonic distortion Off mode output residual noise On mode output residual noise Crosstalk (off mode)
*1 *2 *2
Maximum input level (off
Total circuit current at no load Off mode changeover voltage On mode changeover voltage
Note) *1: Use DIN audio filter. *2: Use A-characteristic curve filter.
2
ICs for Audio Common Use
I Terminal Equivalent Circuits
Pin No. 1 2 Symbol RCNF1 RIN1 Equivalent circuit Description Capacitor pin 1 R-ch. input pin 1
AN7399S
Voltage 4.5 V 4.5 V
2
1 k 50 k 1/2VCC
3
RIN2
R-ch. input pin 2
4.5 V
3
1 k 50 k 1/2VCC
4 5
GND VREF
GND pin Reference voltage stabilizing pin
50 k
0V 4.5 V
5 50 k
6 7
RCNF2 ROUT
Capacitor pin 2 R-ch. output pin
4.5 V 4.5 V
500
7
8 9
N.C. N.C.

3
AN7399S
I Terminal Equivalent Circuits (continued)
Pin No. 10 Symbol LOUT Equivalent circuit
ICs for Audio Common Use
Description L-ch. output pin
Voltage 4.5 V
500
10
11 12
LCNF1 SPON/OFF
Capacitor pin 3 Mode changeover pin
4.5 V VCC to 2.7 V / 0.5 V to 0 V
500 12
13 14
VCC LIN1
Supply pin L-ch. input pin 1
VCC 4.5 V
14
1 k 50 k 1/2VCC
15
LIN2
L-ch. input pin 2
4.5 V
15
1 k 50 k 1/2VCC
16
LCNF2
Capacitor pin 4
4.5 V
4
ICs for Audio Common Use
SPON/OFF
AN7399S
I Application Circuit Example
Change a resistance value for variation of space effect
10 F LIN VCC
100 F
4.7 nF
LCNF1
0 to 50 k
LCNF2
LIN1
LIN2
10 F
LOUT
16
15
14
13
12
11
10
56 nF
1
2
3
4
5
6
10 F V REF
7
8 N.C.
RIN1
RIN2
RCNF1
RCNF2
4.7 nF
10 F
10 F
RIN
GND
I Conceptual Description on Spatializer Operation
* Stereo normal mode All sound are heard from between both left and right speakers.
* Conventional surround system Sound expands outside the speakers but the sound position is not stable.
* Spatializer The sound expands outside the two speakers and the sound position is stable. The sound come to have its expansion and depth. And also, a sound source in the center position is necessarily positioned in center regardless of the spatializer effect value.
I Usage Notes
1. Do not apply 0.3 V or more to pin 12 because it relates with pin 13 (VCC pin) 2. If more than 0.3 V is applied to pin 12, the current flows to pin 13 (VCC pin) via a surge protection diode connected to pin 12.
ROUT
9
N.C.
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 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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