Page 1
Ordering number : ENN6464
41001TN (OT) No. 6464-1/7
Overview
The LA2615 and LA2615M are sound field playback
processing ICs for use in audio equipment, TVs, and PCs.
These ICs allow equipment to easily reproduce a spatial
realistic sound field from a stereo signal from a music,
video, or other audio source.
Features
• Supports a wide operating supply voltage range, and can
be used in a wide range of applications.
• The added surround signal level can be adjusted.
• Low-noise low-distortion bypass mode
• Provides a natural feeling of spaciousness without
degrading the tonal coloration of the source.
• Clear vocal positioning without any apparent loss of
center to the sound
• Miniature packages: 16-pin DIP (LA2615) and 16-pin
MFP (LA2615M)
Functions
• Surround signal processing
• Variable surround effect
• Surround/bypass switching
• LED drive circuit
Package Dimensions
unit: mm
3008B-DIP16
unit: mm
3035B-MFP16
1
8
16
9
3.0
3.4
3.65max
19.2
0.71 2.54
1.2
0.25
0.48
7.62
6.4
SANYO: DIP16
[LA2615]
LA2615, 2615M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Analog Surround IC Featuring the AViSSTM3D
Surround Algorithm*
Monolithic Linear IC
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO: MFP16
[LA2615M]
*: AViSS is a trademark of SANYO Electric Co., Ltd.
10.0
16
1
(0.56)
1.27
0.35
9
4.4
6.4
8
0.63
0.15
(1.5)
1.7max
0.1
Page 2
No. 6464-2/7
LA2615, 2615M
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max 13 V
Allowable power dissipation Pd max 250 mW
Operating temperature Topr –25 to +70 °C
Storage temperature Tstg –40 to +125 °C
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
9.0 V
Operating Conditions at Ta = 25°C
Parameter Symbol Conditions
Ratings
Unit
min typ max
Quiescent current I
CC
T No signal, surround off 4 8 mA
Voltage gain
V
G
T Surround off –2 0 +2 dB
V
G
S Surround on –2 0 +2 dB
Maximum output voltage
V
O
max T THD = 3%, surround off 1 2.5 Vrms
V
O
max S THD = 3%, surround on 1 2.5 Vrms
Total harmonic distortion
THD T Surround off 0.01 0.03 %
THD S Surround on 0.2 0.5 %
Crosstalk CT T Surround off 80 85 dB
Output noise voltage
V
NO
T Surround off –100 –90 dB
V
NO
S Surround off –90 –80 dB
LED current I
LED
6 10 mA
Electrical Characteristics at Ta = 25°C, VCC= 9 V, VI= 300 mVrms (left and right inputs), f = 1 kHz
Page 3
No. 6464-3/7
LA2615, 2615M
Pin Functions
Pin No. Pin Pin voltage Pin function Equivalent circuit
1 CONT1 0 V, 5 V
1
A13471
Surround on/off control
A13472
2
3
2
3
CONT2
CONT3
0 V, 5 V Surround effect selection
5 HPEC
1/2 V
CC
A13473
5
High-pass filter capacitor connection
7
8
L-IN
R-IN
1/2 V
CC
A13474
7
8
Input
9
10
R-OUT
L-OUT
1/2 V
CC
A13475
9
10
Output
12 LED
V
CC
A13476
12
LED connection
13 LPFC
1/2 V
CC
A13477
13
Low-pass filter capacitor connection
15 GUR
1/2 V
CC
A13478
15
Surround effect maximum value setting
16 GDR
1/2 V
CC
A13479
16
Surround effect maximum value setting
Page 4
No. 6464-4/7
LA2615, 2615M
Surround Effect
The maximum value of the surround effect is set with pins 15 and 16.
• The surround effect is increased by connecting an external resistor to pin 15.
• The surround effect is decreased by connecting an external resistor to pin 16.
• The device may be used with no external resistors on pins 15 and 16.
The level of the surround effect is controlled by pins 1 to 3.
Pin 1 Pin 2 Pin 3 Effect
Low Low Maximum
Low High Low Midiam
Low High Minimum
High Bypass
Note*: For the high level, a potential over 3 V and under VCCmust be used.
Page 5
No. 6464-5/7
LA2615, 2615M
Block Diagram
1
On/Off
16
2
H/L
15
3
H/L
GUR
14
4
GND
13
5
HPFC
0.1µF
4.7µF
10kΩ
10kΩ
1µF
V
REF
12
V
CC
LEDLPFCACGGUR
To ACGTo ACG
To V
CC
GDR
6
11
7
10
15
8
9
ANALOG LEVEL
SURROUN ATT
ON/OFF
V
REF
+
47µF
+
0.01µF
4.7µF
R1
R2
+
L-IN
1µF
R-IN
+ +
1µF
R-OUT
+
1µF
L-OUT
+
GDR
16
+
–
A13028
Page 6
No. 6464-6/7
LA2615, 2615M
1
0
2
3
4
5
3 5 7 9 11 13
0
2
4
–2
6
8
10
12
14
16
10
2 3 5 7
100
2 3 5 71k2 3 5 7
10k
2 3 5 7
100k
–5
–10
0
5
10
15
20
25
3 5 7 9 11 13
0.05
0.1
0
0.15
0.2
0.25
0.3
0.35
10
2 3 5 7
100
2 3 5 71k2 3 5 7
10k
2 3 5 7
100k
–98
–100
–96
–94
–92
–90
3 5 7 9 1311
–88
–90
–92
–86
–84
–82
–80
10
2 3 5 7
100
2 3 5 71k2 3 5 7
10k
2 3 5 7
100k
I
CCO
(Bypass)
Signal Handling
(Bypass)
Signal Handling
(Surround)
Surround
Surround
Surround
Bypass
Bypass
Cross Talk
Bypass
I
CCO
(Surround)
Signal Handling — V
CC
I
CCO
— V
CC
Output — Frequency
THD — f
S/N — V
CC
CT — f
Supply voltage, VCC— V
Quiescent current, I
CCO
— mA
Output — dB
Frequency, f — Hz
Supply voltage, VCC— V
Signal Handling — dB
Frequency, f — Hz
Total harmonic distortion, THD — %
Supply voltage, VCC— V
Signal-to-noise ratio, S/N — dB
Frequency, f — Hz
Crosstalk, CT — dB
Page 7
PS No. 6464-7/7
LA2615, 2615M
This catalog provides information as of April, 2001. Specifications and information herein are subject to
change without notice.
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
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