Document Outline
- Contents
- Overview
- Features
- Applications
- Package
- Type
- Application Circuit Example
- Pin Descriptions
- The mode table
- Absolute Maximum Ratings
- Operating supply voltage range
- Electrical Characteristics
- Electrical Characteristics (Design Reference Data)
- Test Circuit Diagram
- Measure Method of Electrical Characteristics
- Technical Data
- Usage Notes
- Licensing Agreement
- Package Outline
1
DATA SHEET
Publication date: May 2004
SDC00058AEB
SEMICONDUCTOR COMPANY
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
AN12974A
Part No.
Package Code No.
XLGA032-L-0505
AN12974A
2
SDC00058AEB
Contents
Overview ............................................................................................................................ 3
Features ............................................................................................................................ 3
Applications ........................................................................................................................ 3
Package ............................................................................................................................ 3
Type .................................................................................................................................. 3
Application Circuit Example .................................................................................................... 4
Pin Descriptions ................................................................................................................... 5
The Mode Table
................................................................................................................. 5
Absolute Maximum Ratings .................................................................................................... 6
Operating Supply Voltage Range
............................................................................................ 6
Electrical Characteristics
...................................................................................................... 7
Electrical Characteristics (Design Reference Data)
.................................................................... 8
Test Circuit Diagram ............................................................................................................ 9
Measure Method of Electrical Characteristics ............................................................................. 10
Technical Data ................................................................................................................... 11
The power and logic timing ................................................................................................... 14
The power timing of V
CC
and V
CC-SP
........................................................................................ 14
Pin 6: AGC on/off switch terminal ........................................................................................... 14
Pin 32: 3D surround spatializer
on/off switch
.......................................................................... 14
Output power when AGC is on .............................................................................................. 15
Amplifier output wave pattern ................................................................................................ 16
Power dissipation of package XLGA032-L-0505
...................................................................... 17
Main characteristics
.......................................................................................................... 17
Usage Notes ...................................................................................................................... 30
Licensing Agreement
.......................................................................................................... 30
Package Outline .................................................................................................................. 31
AN12974A
3
SDC00058AEB
AN12974A
Stereo power amplifier with built-in AGC circuitry and SPATIALIZER
Overview
The AN12974A audio power amplifier features built-in AGC circuitry and Spatializer
environ
.
The Spatializer
environ
is Desper Products, Inc.'s exclusive signal processing technology that is able to generate surround sound
for low-power mobile applications. The technology is based on the company's commercial 3D audio production system, PRO-
Spatializer
Audio Production System. The AN12974A IC employs the same innovative technology of the PRO-Spatializer
Audio
Production System to enhance sound for products with close proximity speakers such as those on headphones and cellular phones to
expand the soundfield for a much more spacious sound.
Features
Delivers spacious 3D sound for a stereo system with such as cellular phones' speakers in close proximity.
The AGC circuitry can activate to minimize distortion, raising the average volume level and it can prevent speaker from breaking
when an input level is too high.
High output BTL power amplifier, when AGC is on, speaker output: 700mW
(V
CC-SP
= 4.2 V, RL = 8
, when AGC is on, the rate of the output wave pattern's distortion would be approximately 1%)
Operating supply voltage: V
CC
= 2.55 V to 3.5 V, V
CC-SP
= 2.55 V to 4.5 V
Applications
Cellular phones, PDAs and portable DVD players
Package
32-pin fine pitch land grid array package (XLGA type)
Type
Silicon monolithic bipolar IC
Portable DVD Player
1
2
3
4
5
6
7
8
9
*
0
#
Spatializer
environ
provides a dramatic,
surround sound effect
with just two speakers
Speaker
Speaker
Note) Spatializer
and the circle-in-square device trademark are owned by Desper Products, Inc.
Products and specifications are subject to change without notice.
Please ask for the latest Product Standards to guarantee the satisfaction of your product requirements.
AN12974A
4
SDC00058AEB
Application Circuit Example
100 k
0.1
F
10 k
4 700 pF
1
F
SPATIALIZER
SW
V
CC
On
Off
0.1
F
3
13
15
12
1
F
21
20
AGC
AGC
AGC
det.
SP
A
TIALIZER
0.1
F
1
F
4
29
30
28
31
25
26
27
22
23
24
32
1
2
5
6
11
14
10
SP save
SW
V
CC
On
Off
STB
SW
AGC
SW
10 k
4 700 pF
10 k
10 k
0.47
F
1
F
+
6 dB
-
40 dBV
-
34 dBV
0 dB
-
34 dBV
+
7 dB
-
27 dBV
+
13 dB
+
13 dB
Speaker
8
R-channel
Speaker
8
L-channel
-
6 dB
+
6 dB
-
40 dBV
-
34 dBV
-
34 dBV
+
7 dB
-
27 dBV
+
13 dB
+
13 dB
-
6 dB
V
CC
V
CC
V
CC-SP
(R)
V
CC-SP
(L)
V
CC
GND
SPL
GND
SPR
IN
L-channel
In
R-channel
1
F
0.1
F
-
34 dBV
-
34 dBV
16
17
18
19
8
9
0 dB
1
F
0.1
F
0.1
F
0.1
F
0.1
F
+
-
+
-
1 000 pF
C
R
1 000 pF
SPATIALIZER
output
SPATIALIZER
output
Cellular phones
C = 22 000 pF or 18 000 pF
R = 2.2 k
Portable DVD players
C=56 000 pF
R=10 k
to
20 k
2.2
F
On
Off
Timing
cont.
7
On
Off
AN12974A
5
SDC00058AEB
Pin Descriptions
The mode table
All standby on/off switch
16
Speaker output l-channel (
+
)
15
GND (Speaker l-channel)
14
Speaker output l-channel (
-
)
13
Speaker output r-channel (
+
)
12
GND (Spesker r-channel)
11
Speaker output r-channel (
-
)
10
Speaker power save on/off switch
9
V
CC-SP
r-channel
8
Pre-charge timing condenser terminal
7
AGC on/off switch
6
Gain adjustment reflection amplifier output r-channel
5
Gain adjustment reflection amplifier output r-channel
4
Surround output r-channel
3
Surround filter terminal r-channel 2
2
Surround filter terminal r-channel 1
1
Description
Pin
No.
Surround on/off switch
32
GND
31
Audio input terminal r-channel
30
V
CC
29
Audio input terminal l-channel
28
1/2 V
CC
(V
REF
)
27
Surround effect adjustment 2
26
Surround effect adjustment 1
25
Surround filter terminal l-channel 1
24
Surround filter terminal l-channel 2
23
Surround output l-channel
22
Gain adjustment reflection amplifier output l-channel
21
Gain adjustment reflection amplifier output l-channel
20
AGC detecting terminal
19
1/2 V
CC-SP
(V
REF-SP
)
18
V
CC-SP
(L-channel)
17
Description
Pin
No.
On/off of power amplifier for speaker is controlled.
Off
On
Speaker power save on/off
switch
9
On/off of all functions of IC is controlled.
Off
On
All standby on/off switch
16
Mode
On
On
High
On/off of spatializer
function is controlled.
Off
Surround on/off switch
32
Explanation of operation
Low
Function
Pin No.
On/off of AGC function for speaker is controlled.
Off
AGC on/off switch
6
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