AN7395K/AN7395S [ETC]
AN7395K. AN7395S - Spatializer IC (3-D Surround) ; AN7395K 。 AN7395S - Spatializer集成电路（3D环绕声）\n
| 型号： | AN7395K/AN7395S |
| 厂家： | 
ETC |
| 描述： | AN7395K. AN7395S - Spatializer IC (3-D Surround)
|
| 文件： | 总5页 (文件大小：112K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for Audio Common Use
AN7395K, AN7395S
Spatializer IC (3-D Surround)
I Overview
AN7395K
Unit: mm
19.1±0.3
Spatializer Audio Processor is a signal process-
20
11
10
ing 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.
1
7.62±0.25
1.778
0.5±0.1
0.90±0.25
Seating plane
I Features
SDIP020-P-0300
• Provides deep 3-D sound with conventional 2-
speaker system.
AN7395S
Unit: mm
• 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.
12.6±0.3
20
11
• Sound expansion effect can be varied.
• A pseudo stereo effect for the monaural audio sig-
nal is achieved.
1
10
0° to 10°
0.3
• Positions and moves each sound source on 270°
arc in real time.
1.27
(0.60)
0.40±0.25
Seating plane
Seating plane
I Applications
• Televisions, videos, audio equipment, personal
computers, and game machines
SOP020-P-0300B
I Pin Assignment
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.
1
AN7395K, AN7395S
ICs for Audio Common Use
I Pin Descriptions
Pin No.
Descriptions
Pin No.
11
Descriptions
1
2
L-in
TIM2
VREF
L-out
S-out
R-out
Set
12
VCC
3
13
Space
Mode
N.C.
F2
4
14
5
15
6
16
7
R-ret.
GND
L-ret.
TIM1
17
VREG
F1
8
18
9
19
R-in
GND
10
20
I Absolute Maximum Ratings
Parameter
Symbol
VCC
ICC
Rating
Unit
V
Supply voltage
11
100
Supply current
mA
mW
°C
2
Power dissipation *
PD
230
1
Operating ambient temperature *
Topr
Tstg
−25 to +75
−55 to +125
1
Storage temperature *
°C
Note) 1: Except for the operating ambient temperature and storage temperature, all ratings are for T = 25°C.
*
a
2: The power dissipation shown is the value for T = 75°C
*
a
I Recommended Operating Range
Parameter
Supply voltage
Symbol
VCC
Range
Unit
6.0 to 10.0
V
2
ICs for Audio Common Use
AN7395K, AN7395S
I Electrical Characteristics at VCC = 9 V, f = 1 kHz, Ta = 25°C 2°C
Parameter
Total circuit current
Symbol
Conditions
Min
5
Typ Max
Unit
mA
ITOTAL VIN = 0 mV
11
2.8
20
17
3
Maximum output voltage *
VOUT1 L-in, R-in THD = 1%
2.0
−2
200
4.2
0
V[rms]
1, 4
Output noise voltage 1 *
VNO1
GV1
L-out, R-out RG = 4.7 kΩ
L-out, R-out VIN = 400 mV
100 µV[rms]
3
Voltage gain 1 *
0
2
dB
%
2, 3
2, 6
Total harmonic distortion 1 *
THD1 L-out, R-out VIN = 400 mV
0.05
160
280
0.05
0.3
1, 5
Output noise voltage 2 *
VNO2
GV2
S-out RG = 4.7 kΩ
S-out VIN = 60 mV
600 µV[rms]
6
Voltage gain 2 *
400 mV[rms]
Total harmonic distortion 2 *
THD2 S-out VIN = 60 mV
0.3
VCC
0.9
%
V
V
V
Mono mode switching voltage
Off mode switching voltage
Stereo mode switching voltage
VM
VOFF
VST
2.1
2.8
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 con-
ventional 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
AN7395K, AN7395S
ICs for Audio Common Use
I Application Circuit Example (Basic circuitry)
56 nF
39 nF
Note) When switching noise occurs at mode switching, insert a capacitor between pin 14 and GND.
4
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2001 MAR
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