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Ordering number : ENN7139
Monolithic Linear IC
LA2901V
Four-Channel High-Output Line Amplifier for Car Audio Systems
Overview
The LA2901V is a high output level 4-channel line amplifier designed for car audio systems. This line amplifier provides an output signal with a significantly higher amplitude than the output signal provided by earlier preamplifiers. This higher amplitude significantly improves the signal-to-noise ratio in the connection from the main unit to the external power amplifier, and results in improved power amplifier performance. The LA2901V also significantly reduces the required mounting area by cutting in half the number of external capacitors required for boosting the signal-system supply voltage and is available in SSOP miniature package.
Package Dimensions
unit: mm 3175B-SSOP24 (275 mil)
[LA2901V]
7.8
24
5.6
1
1.5max (0.33) 0.65 0.22 (1.3)
0.15
Functions and Features
* * * * * * High output level (5.3 Vrms) Low output noise voltage (12 V) Low total harmonic distortion (0.004%) High ripple rejection ratio (70 dB) Fewer external parts required Excellent audio fidelity
SANYO: SSOP24 (275 mil)
Specifications
Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg With no input signal Ta 85C, Mounted on a printed circuit board (114.3 x 76.1 x 1.6 mm3, glass epoxy) Conditions Ratings 13 400 -40 to +85 -40 to +150 Unit V mW C C
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 Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3001TN (OT) No. 7139-1/5
0.1
0.5
7.6
LA2901V Recommended Operating Conditions at Ta = 25C
Parameter Recommended operating voltage Allowable operating supply voltage range Recommended load resistance Symbol VCC VCCOP RLOP Conditions Ratings 9 6 to 12 10 Unit V V k
Electrical Characteristics at Ta = 25C, VCC = 9 V, RL = 10 k, f = 1 kHz, Rg = 600
Parameter Quiescent current Voltage gain Output voltage Total harmonic distortion Output noise voltage Ripple rejection ratio Channel separation Input resistance Symbol ICCO VG VO THD VNO SVRR CHsep Ri Rg = 0 VO = 0 dBm THD = 0.1% VO = 3 Vrms, LPF = 80 kHz Rg = 0, BPF = 20 Hz to 20 kHz Rg = 0, fr = 100 Hz, Vr = 100 mVrms, BPF = 20 Hz to 20 kHz Rg = 10 k, VO = 1 Vrms 60 60 21 Conditions Ratings min 10 7.5 5.0 typ 16 8 5.3 0.004 12 70 70 30 39 0.01 17 max 22 8.5 Unit mA dB Vrms % Vrms dB dB k
Pin Assignment
LIFT R OUT LIFT L OUT LIFT R VD LIFT L VD RR OUT 13 Top view 1 LF IN-2 LF IN+ 3 N.C 4 LR IN-5 LR IN+ 6 DC L 7 DC R 8 RF IN+ 9 RF IN-10 N.C 11 RR IN+ 12 RR IN-RF OUT 14 LR OUT LF OUT
24
23
22
21
20
19
18
17
16
15
LA2901V
R GND
VCC R
L GND
VCC L
ILA00924
No. 7139-2/5
LA2901V Sample Application Circuit and Block Diagram
36k 24k 24k
36k SIGNAL AMP
1 LF-IN + 22F 2 -+
-+ VCC 30k
24
22F + 10k
LF-OUT
3
VREF
4 LR-IN + 22F 5 VREF -+
-+ VCC 30k
SIGNAL AMP
23
22F + 10k
LR-OUT
22 21
X
+ --
LIFT AMP
20 1.5NF
DC-L Ripple Filter +
6
VREF
-+ 12k 36k 19 18
47F
7 DC-R
VREF
+ --
-17 X LIFT AMP 16 VREF RF-IN + 22F 8 9 + 14 -SIGNAL AMP + -30k VCC 15 22F + 10k RF-OUT + 100F +
10 RR-IN + 22F 11 12
VREF
+ --
30k
VCC + -13 SIGNAL AMP 22F + 10k
1.5NF
12k
36k
36k 36k 24k 24k
ILA00923
Note: We recommend using resistors with tolerances of 1% or better for the 24 k and 36 k feedback resistors.
10F
+
RR-OUT
100F VCC 9.0V
+
No. 7139-3/5
LA2901V
ICCO, VN -- VCC
RL=10k Rg=0
25
25
8
VO -- VCC
RL=10k f=1kHz THD=0.1% Rg=600 L.P.F=80kHz
Quiescent current, ICCO -- mA
Output pin voltage, VN -- V
I CCO
15 15
Output voltage, VO -- Vrms
20
20
7
6
5
10
10
VN
5 5
4
3
0 2 4 6 8 10 12
0 14 ILA00925
2 6 7 8 9 10 11 12 ILA00926
Supply voltage, VCC -- V
1.0 7 5 3 2 0.1 7 5 3 2
Supply voltage, VCC -- V
2
THD -- VO
VCC=9V RL=10k Rg=600 L.P.F=80kHz
f Response -- f
VCC=9V RL=10k VO=0dBm Rg=600
Total harmonic distortion, THD -- %
1
Response -- dB
4 5 6 ILA00927
10kHz
0
0.01 7 5 3 2 0 1 2 3
1kHz
--1
100Hz
--2 10 23 5 7 100 23 5 7 1k 23 5 7 10k 23 57 100k ILA00928
0.001
Output voltage, VO -- Vrms
40
Input frequency, f -- Hz
40
VNO -- VCC
Output noise voltage, VNO -- Vrms
Rg=0 RL=10k DIN AUDIO
VNO -- Rg
VCC=9V RL=10k DIN AUDIO
Output noise voltage, VNO -- Vrms
30
30
20
20
10
10
0 6 7 8 9 10 11 12 ILA00929
Supply voltage, VCC -- V
--20
0 10
23
5 7 100
23
Input resistance, Rg --
5 7 1k
23
5 7 10k
23
5 7100k ILA00930
SVRR -- VCCR
Ripple rejection ratio, SVRR -- dB
VCC=9V RL=10k fr=1kHz Rg=0 DIN AUDIO
--20
SVRR -- fr
VCC=9V RL=10k VCCR=100mVrms Rg=0 DIN AUDIO
Ripple rejection ratio, SVRR -- dB
--40
--40
--60
--60
--80
--80
--100 0 200 400 600 800 1000 ILA00931
Power supply ripple voltage, VCCR -- mVrms
--100 10
2
3
5 7 100
2
3
5 7 1k
2
3
Ripple frequency, fr -- Hz
5 7 10k 2 ILA00932
No. 7139-4/5
LA2901V
CH Sep -- f
--20 --20
CH Sep -- f
Channel separation, CH sep -- dB
VCC=9V RL=10k LF=1Vrms Rg=10k
Channel separation, CH sep -- dB
--40
VCC=9V RL=10k LR=1Vrms Rg=10k
--40
--60
--60
LF
LR
Rch
--80
Rch
--80
--100 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Input frequency, f -- Hz
5 7100k ILA00933
--100 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Input frequency, f -- Hz
5 7100k ILA00934
CH Sep -- f
--20 --20
CH Sep -- f
Channel separation, CH sep -- dB
VCC=9V RL=10k RF=1Vrms Rg=10k
Channel separation, CH sep -- dB
--40
VCC=9V RL=10k RR=1Vrms Rg=10k
--40
--60
--60
RF
RR
Lch
--80
Lch
--80
--100 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Input frequency, f -- Hz
5 7100k ILA00935
--100 10
23
5 7 100
23
5 7 1k
23
5 7 10k
23
Input frequency, f -- Hz
5 7100k ILA00936
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.
This catalog provides information as of October, 2001. Specifications and information herein are subject to change without notice. PS No. 7139-5/5

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