AN7397K/AN7397S [ETC]
AN7397K. AN7397S - Spatializer IC for I2C bus ; AN7397K 。 AN7397S - Spatializer IC的I2C总线\n
| 型号： | AN7397K/AN7397S |
| 厂家： | 
ETC |
| 描述： | AN7397K. AN7397S - Spatializer IC for I2C bus
|
| 文件： | 总6页 (文件大小：123K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICs for Audio Common Use
AN7397K, AN7397S
Spatializer IC for I2C bus
I Overview
AN7397K
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 AN7397K, AN7397S
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.
AN7397S
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 localization 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
• An on-chip serial control bus (i.e., I2C) to vary
space-effect and change modes.
SOP020-P-0300B
I Applications
• Televisions, videos, audio equipment, DVDs, per-
sonal computers, and game machines
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
AN7397K, AN7397S
ICs for Audio Common Use
I Pin Descriptions
Pin No.
Description
Pin No.
11
Description
1
2
L-in
SDA
1/2 VCC
L-out
S-out
R-out
R-ret.
Mode
L-ret.
D-GND
SCL
12
R-det.1
R-det.2
VCC
3
13
4
14
5
15
Space
VCA
F-in
6
16
7
17
8
18
F-out
R-in
9
19
10
20
GND
I Absolute Maximum Ratings
Parameter
Symbol
VCC
ICC
Rating
Unit
V
Supply voltage
7.0
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
4.5 to 6.8
V
2
ICs for Audio Common Use
AN7397K, AN7397S
I Electrical Characteristics at VCC = 5 V, f = 1 kHz, Ta = 25°C 2°C
Parameter
Total circuit current
Symbol
Conditions
Min
18
Typ Max
Unit
mA
ITOTAL VIN = 0 mV
25
1.0
20
32
3
Maximum output voltage *
VOUT1 L-in, R-in THD = 1%
0.8
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
50 µV[rms]
3
Voltage gain 1 *
−2
0
2
dB
%
2, 3
2, 6
Total harmonic distortion 1 *
THD1 L-out, R-out VIN = 400 mV
0.05
80
0.2
1, 5
Output noise voltage 2 *
VNO2
GV2
S-out RG = 4.7 kΩ
S-out VIN = 60 mV
200 µV[rms]
6
Voltage gain 2 *
343
450
0.15
685 mV[rms]
Total harmonic distortion 2 *
I2C interface
THD2 S-out VIN = 60 mV
0.3
%
Sink current at ACK
IACK
Maximum value of sink current of
pin 11 at ACK
2.0
10
mA
SCL/SDA signal input high- level VIHI
SCL/SDA signal input low- level VILO
Input-enable maximum frequency fImax
2.5
0
3.5
0.5
V
V
100
Kbit/s
1
Note) * : 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.
2
3
* : Mode: ST, L-in + R-in, VCA (I C data: BFH)
2
4
* : Mode: ST, VCA (I C data: BFH)
2
5
* : Mode: ST, VCA (I C data: 80 H)
2
6
* : Mode: ST, VCA (I C data: 80 H) for either L-in or R-in
• Design reference data
Parameter
I2C interface
Symbol
Conditions
Min
Typ Max
Unit
Bus free before start
Start condition set-up time
Start condition hold time
SCL/SDA low period
SCL high period
tBUF
tSU, STA
tHD, STA
tLO
4.0
4.0
4.0
4.0
4.0
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
tHI
SCL/SDA rise time
SCL/SDA fall time
Data set-up time (Write)
Data hold time (Write)
Acknowledge set-up time
Acknowledge hold time
Stop condition set-up time
DAC
tR
1.0
0.35
tF
tSU, DAT
tHD, DAT
tSU, ACK
tHD, ACK
tSU, STO
0.25
0
3.5
0
4.0
6-bit DAC DNLE
L6
1 LSB = (Data (max.) − Data (00))/63
0.1
1.0
1.9
LSB
step
3
AN7397K, AN7397S
ICs for Audio Common Use
I Electrical Characteristics at VCC = 5 V, f = 1 kHz, Ta = 25°C 2°C (continued)
• DAC timing chart
Start
condition
Slave
address
Data
byte
Stop
ACK
ACK
condition
SDA
tBUF
tLO
tSU.STO
tSU.DAT
tHD.DAT
SCL
tSU.STA
tHD.STA tR
tF
tHI
tLO
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.
4
ICs for Audio Common Use
AN7397K, AN7397S
I Application Circuit Example (Basic circuitry)
I2C
GEN
A
B
A
10 nF
47 nF
GND
B
47 nF
Note) When switching noise occurs at mode switching, insert a capacitor between pin 7 and GND.
*: For the capacitor of 22 µF, use that of a non-polar type.
5
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2001 MAR
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