ICs for Audio Common Use
1
Publication date: November 2001 SDC00028BEB
AN7399S
Spatializer sound processor IC
a73 Overview
A spatializer audio processor is the Desper Inc.'s
proprietary signal processing technology exclusively
developed for the consumer electronics and multi-
media market. It is based on the Desper's profes-
sional 3D audio production system "PRO-
Spatializer". 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.
a73 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.
a73 Applications
• Radio cassette recorder, stereo-sound TV and
VCR, personal computer, active speaker
SOP016-P-0225C
Unit: mm
a73 Pin Assignment
16
1
15
2
14
3
13
4
12
5
11
6
10
7
9
8
RCNF1
RIN1 RIN2 GND V
REF
RCNF2
R
OUT
N.C.
LCNF2 LIN1 LIN2 V
CC
SPON/OFF LCNF1 LOUT N.C.
R
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.
Note) The package of this product will be changed to lead-free type
(SOP016-P-0225F). See the new package dimensions section
later of this datasheet.
10.09±0.20
16 9
18
(0.60)
0.40±0.10
Seating plane Seating plane
4.30±0.20 6.40±0.30
1.50±0.20
0.10±0.10
0.65±0.10
0.65±0.10
1.27
0.15
+
0
.1
0
–
0
.0
5
0° to 10°
0.50±0.20