Ordering number : ENN6950A
N1501TN (OT)/51101RM (OT) No. 6950-1/5
Overview
The LA2900M is a 2-channel high-output line amplifier
IC developed for use in car audio systems. It can provide
significant improvements in the signal-to-noise ratio when
used to drive an external power amplifier due to its
significantly increased output voltage as compared to that
of earlier preamplifiers.
The high output of the LA2900M allows it to achieve a
high signal-to-noise ratio and excellent fidelity in audio
systems in which the main unit is connected to an external
amplifier, and can improve the performance of the power
amplifier in such systems.
Functions and Features
High output level (5.3 V rms)
Low output noise voltage (12 V)
Low total harmonic distortion (0.003%)
High ripple rejection ratio (70 dB)
Excellent audio fidelity
Package Dimensions
unit: mm
3036C-MFP20
1
20
10
11
12.5
0.15
1.27
0.35
(0.4)
1.7max
(1.5)
0.1
5.4
0.63
7.6
SANYO: MFP20 (300mil)
[LA2900M]
LA2900M
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Two-Channel High-Output Line Amplifier
for Car Audio Systems
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.
Parameter
Symbol
Conditions
Ratings
Unit
Maximum supply voltage
V
CC
max
With no input signal
12
V
Allowable power dissipation
Pd max
Ta
85C, Mounted on a printed circuit board
400
mW
(114.3
76.1
1.6 mm
3
, glass epoxy)
Operating temperature
Topr
40 to +85
C
Storage temperature
Tstg
40 to +150
C
Specifications
Maximum Ratings
at Ta = 25C
No. 6950-2/5
LA2900M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Quiescent current
I
CCO
Rg = 0
7
11
15
mA
Voltage gain
V
G
V
O
= 0 dBm
7.5
8
8.5
dB
Output voltage
V
O
THD = 0.1%
5.0
5.3
Vrms
Total harmonic distortion
THD
V
O
= 3 Vrms, LPF = 80 kHz
0.003
0.01
%
Output noise voltage
V
NO
Rg = 0, BPF = 20 Hz to 20 kHz
12
17
Vrms
Ripple rejection ratio
SVRR
Rg = 0, f
R
= 1 kHz, V
CCR
= 100 mV,
60
70
dB
BPF = 20 Hz to 20 kHz
Channel separation
CH
sep
Rg = 10 k
, V
O
= 1 Vrms
60
70
dB
Input resistance
Ri
20
30
39
k
Electrical Characteristics
at Ta = 25C, V
CC
= 9 V, RL = 10 k
, f = 1 kHz, Rg = 600
Parameter
Symbol
Conditions
Ratings
Unit
Recommended operating voltage
V
CC
9
V
Allowable operating supply voltage range
V
CCOP
6 to 12
V
Recommended load resistance
RL
OP
10
k
Recommended Operating Conditions
at Ta = 25C
No. 6950-3/5
LA2900M
Block Diagram
36k
C1
22
F
+
+
VIN1
24k
+
--
+
--
+
--
+
--
36k
24k
30k
--
--
+
+
VCC
C10
1.5
F
C11
0.1
F
+
C9
100
F
OUT1
220
C8
22
F
+
C7
RL
10k
1.5
F
VREF
47
F
+
C2 22
F
+
+
VIN2
24k
VREF
24k
30k
36k
36k
--
+
+
--
C6
1.5
F
+
C5
100
F
OUT2
C4
22
F
+
C3
1.5
F
RL
10k
220
LIFT
AMP
AMP
SIG
LIFT
SIG
ILA00765
4
3
5
6
8
7
17
19
18
16
2
15
13
12
9
14
Pin Assignment
10
11
9
12
8
13
7
14
6
15
5
16
4
17
3
18
2
19
1
20
ILA00766
V
CC
1
IN1
DC1
NF1
NF2
DC2
IN2
V
CC
2
LIFT
VD
1
LIFTout1
GND1
SIGout1
SIGout2
GND2
LIFTout2
LIFT
VD
2
Top view
LA2900M
No. 6950-4/5
LA2900M
2
4
6
8
10
12
0
2
3
4
5
6
7
1
Supply voltage, VCC -- V
ILA00767
ILA00769
ILA00771
ILA00768
ILA00770
ILA00772
O
u
t
p
u
t
v
o
l
t
a
g
e
,
V
O
V
f=1kHz
VG=8.0dB
RL=10k
THD=0.1%
LPF=80kHz
0
1
2
3
4
5
6
2
5
7
0.01
2
3
5
3
0.1
2
3
5
7
1.0
7
Output voltage, VO -- Vrms
THD -- VO
T
o
t
a
l
h
a
r
m
o
n
i
c
d
i
s
t
o
r
t
i
o
n
,
T
H
D
-
-
%
f=1
0kH
z
f=1kHz
f=100Hz
Supply voltage, VCC -- V
Frequency, f -- Hz
O
u
t
p
u
t
n
o
i
s
e
v
o
l
t
a
g
e
,
V
N
O
-
-
V
4
6
8
10
12
14
10
14
16
18
20
22
24
12
Frequency, f -- Hz
SVRR -- Frequency
R
i
p
p
l
e
r
e
j
e
c
t
i
o
n
r
a
t
i
o
,
S
V
R
R
-
-
d
B
Frequency, f -- Hz
Separation -- Frequency
S
e
p
a
r
a
t
i
o
n
,
S
e
p
-
-
d
B
100
2
3
5
7
1k
2
3
5
7
10k
--80
--60
--40
--20
0
--100
--80
--60
--40
--20
0
Frequency Characteristics
VO -- VCC
VNO -- VCC
R
e
s
p
o
n
s
e
-
-
d
B
2 3
5 7 100
2 3
5 7 1k
2 3
5 7 10k
2 3
5 7100k
2
3
5 7 100
2
3
5 7 1k
2
3
5
10k
7
2
3
5
0
--1
--2
--3
--4
--5
1
2
3
4
5
Converted to 0 dB = VG 8.0 dB
VCC=9V
RL=10k
VG=8.0dB
Rg=10k
VCC=9V
VO=0dBm
VG=8.0dB
RL=10k
VCC=9V
Rg=0
VCCR=100mV
DIN=AUDIO
RL=10k
VG=8.0dB
VG=8.0dB
DIN=AUDIO(20 to 20kHz)
Rg=0
RL=10k
VCC=9V
VG=8.0dB
RL=10k
LPF=80kHz
Rg=600
VO=1V
VO=3V
PS No. 6950-5/5
LA2900M
This catalog provides information as of November, 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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