ICs for Audio Common Use
AN7396K
Sound signal processing with built-in Spatializer IC
I
Overview
Spatializer Audio Processor is a signal processing
technology, monopolized by Desper Products, Inc., that
was developed for commercial electronics and multime-
dia markets, and is based on Desper's “PRO Spatializer”
that is a 3-D audio production system for business use.
The AN7396K utilizes the innovative technology adopted
in that system. It provides sound enhancement effect and
sound expansion with the conventional 2-speaker stereo
system. Moreover, the AN7396K is a sound processing IC
which incorporates the I
2
C Bus-controllable mute, sound
AGC, bass reinforcement, tone (bass and treble), balance,
and volume circuits.
1
30
Unit: mm
0.5±0.1
0.9±0.25
26.7±0.3
15
8.6±0.3
16
1.0±0.25
4.7±0.25 3.3±0.25
I
Features
•
Provides deep 3-D sound with conventional 2-speaker
system.
•
Performs optimal processing to the sound source re-
corded with surround-effect so as not to give double
effects.
•
Provides the functions of muting, AGC, bass reinforce-
ment, tone, balance, and volume control.
•
Supports I
2
C Bus controls.
10.16±0.25
3° to 15°
0.35
–0.05
+0.1
SDIP030-P-0400
Note) The package of this product will be changed
to lead-free type (SDIP030-P-0400B). See the
new package dimensions section later of this
datasheet.
I
Applications
•
Televisions, videos, audio equipment, and game machines
I
Block Diagram
BL.D.
Space
R-out
F-out
V
REF
VCA
SDA
R.B.
SCL
R-in
V
CC
T.D.
R.T.
F-in
BB
29
28
27
26
25
24
23
22
21
20
19
18
17
30
Bass reinforcement
AGC
Spatializer
Tone control
Volume control 2.2 kΩ
Balance control/
Mute
10
11
12
13
14
BR
AGC
L-in
TIM2
TIM1
R-ret.
L-ret.
BL
Mode
GND
L.T.
L.B.
B.D.
V.D.
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.
L-out
15
1
2
3
4
5
6
7
8
9
16
1.778
Publication date: November 2001
SDC00026BEB
1
AN7396K
I
Electrical Characteristics at V
CC
=
9 V, T
a
=
25°C
±
2°C
Parameter
Volume max. level
*1
Volume 1/2 level
*1
Volume min. level
*1
Balance max. level
*1
Balance min. level
*1
Bus bootstrap level
Bus cut level
Treble bootstrap level
Treble cut level
Circuit current
*1
Maximum input voltage
*1
Muting level
*1
Noise level at volume max.
*2
Noise level at volume min.
*2
Bass reinforcement max. level
Bass reinforcement min. level
Level at surround max.
*1
Noise level at surround max.
*2
Total harmonic distortion at
surround max.
*1
Crosstalk
*2
Channel balance (max.)
*1
Channel balance (1/4)
*1
AGC
AGC gain 1
*1
AGC gain 2
*1
I
2
C interface
Sink current at ACK
SCL, SDA signal input
high-level
SCL, SDA signal input
low-level
Maximum input frequency
Note) *1: The DIN audio filter is used.
*2: The A-curve filter is used.
Symbol
VV
max
VV
1/2
VV
min
VB
max
VB
min
V
BB
V
BC
V
TB
V
TC
I
CCT
V
Imax
Conditions
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
400 mV[rms], f
=
50 Hz
V
IN
=
400 mV[rms], f
=
50 Hz
V
IN
=
400 mV[rms], f
=
20 kHz
V
IN
=
400 mV[rms], f
=
20 kHz
V
IN
=
0 mV
V
IN
=
1 V[rms], f
=
1 kHz
THD
=
1%, f
=
1 kHz
V
IN
=
0 mV, R
G
=
4.7 kΩ
V
IN
=
0 mV, R
G
=
4.7 kΩ
V
IN
=
400 mV[rms], f
=
50 Hz
V
IN
=
400 mV[rms], f
=
50 Hz
V
IN
=
50 mV[rms], f
=
1 kHz
V
IN
=
0 mV, R
G
=
4.7 kΩ
V
IN
=
50 mV[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
V
IN
=
50 mV[rms], f
=
1 kHz
V
IN
=
1 V[rms], f
=
1 kHz
The maximum value of sink current
of pin 17 at ACK
Min
−1
−1
10
Typ
0
−100
0
−82
12.5
Max
1
−90
1
−80
15
−8.5
15
−8.5
90
0.3
−90
120
10
11
6
750
150
0.3
−66
1
2
Unit
dB
dB
dB
dB
dB
dB
dB
dB
dB
mA
%
V[rms]
dB
µV[rms]
µV[rms]
dB
dB
mV[rms]
µV[rms]
%
dB
dB
dB
−14.5 −12.5 −10.5
−13.5 −11.0
10
12.5
−13.5 −11.0
45
2.0
7
2
415
−1
−2
65
0.1
2.2
−100
82
4
9
4
600
110
0.1
−78
0
0
Total harmonic distortion max.
*1
THD
max
VMUTE V
IN
=
1 V[rms], f
=
1 kHz
V
Nmax
V
Nmin
VXB
max
VXB
min
V
SU1
V
SN
THD
SU
CT
CB
max
CB
1/4
V
AGC1
V
AGC2
I
ACK
V
IHI
V
ILO
f
Imax
77
230
110
345
150
470
5.0
0.5
100
mV[rms]
mV[rms]
2.0
3.5
0
10
mA
V
V
Kbit/s
SDC00026BEB
3
AN7396K
I
Electrical Characteristics at V
CC
=
9 V, T
a
=
25°C
±
2°C (continued)
•
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
I
2
C Interface
Bus free before start
Start condition set-up time
Start condition hold time
SCL/SDA low period
SCL high period
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
6-bit DAC DNLE
AGC gain 3
(Sub address 04H: 05H)
*1
AGC gain 4
(Sub address 04H: 03H)
*1
AGC gain 5
(Sub address 04H: 01H)
*1
AGC gain 6
(Sub address 04H: 07H)
*1
AGC gain 7
(Sub address 04H: 03H)
*1
Note) *1: The DIN audio filter is used.
Symbol
Conditions
Min
Typ
1.0
150
200
250
350
290
Max
1.0
0.35
3.5
1.9
430
Unit
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
LSB
step
mV[rms]
mV[rms]
mV[rms]
mV[rms]
mV[rms]
t
BUF
t
SU, STA
t
HD, STA
t
LO
t
HI
t
R
t
F
t
SU, DAT
t
HD, DAT
t
SU, ACK
t
HD, ACK
t
SU, STO
L
6
V
AGC3
V
AGC4
V
AGC5
V
AGC6
V
AGC7
1 LSB
=
(Data(max.)
−
Data(00))/63
V
IN
=
100 mV[rms], f
=
1 kHz
V
IN
=
140 mV[rms], f
=
1 kHz
V
IN
=
200 mV[rms], f
=
1 kHz
V
IN
=
280 mV[rms], f
=
1 kHz
V
IN
=
500 mV[rms], f
=
1 kHz
4.0
4.0
4.0
4.0
4.0
0.25
0
0
4.0
0.1
180
•
DAC timing chart
Start
condition
SDA
t
BUF
SCL
t
SU.STA
t
HD.STA
t
R
t
F
t
HI
t
LO
t
SU.DAT
t
HD.DAT
t
LO
t
SU.STO
Slave
address
ACK
Sub
address
ACK
Data
byte
Stop
ACK condition
4
SDC00026BEB
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