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| Ordering number : ENN7140 Monolithic Linear IC LA2902V Four-Channel High-Output Line Amplifier for Car Audio Systems Overview The LA2902V 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 LA2902V 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) [LA2902V] 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 (17 V) Low total harmonic distortion (0.004%) High ripple rejection ratio (65 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. 7140-1/5 0.1 0.5 7.6 LA2902V 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 55 60 21 Conditions Ratings min 10 11.5 5.0 typ 16 12 5.3 0.004 17 65 70 30 39 0.01 24 max 22 12.5 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-- 24 23 22 21 20 19 18 17 16 15 14 LA2902V RF OUT LR OUT LF OUT R GND VCC R L GND VCC L ILA00938 No. 7140-2/5 LA2902V Sample Application Circuit and Block Diagram 36k 12k 12k 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 47F + 6 VREF -+ 7.5k 36k 19 18 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 7.5k 36k 36k 36k 12k 12k ILA00937 Note: We recommend using resistors with tolerances of 1% or better for the 12 k and 36 k feedback resistors. 10F + RR-OUT 100F VCC 9.0V + No. 7140-3/5 LA2902V 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 I CCO 15 15 Output pin voltage, VN -- V 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 ILA00939 2 6 7 8 9 10 11 12 ILA00940 Supply voltage, VCC -- V 1.0 7 5 3 2 0.1 7 5 3 2 0.01 7 5 3 2 0 1 2 3 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 ILA00941 0 10kHz 1kHz 100Hz --1 0.001 --2 10 23 5 7 100 23 5 7 1k 23 5 7 10k 23 Output voltage, VO -- Vrms 40 Input frequency, f -- Hz 40 57 100k ILA00942 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 ILA00943 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 ILA00944 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 ILA00945 --100 10 2 3 5 7 100 2 3 5 7 1k 2 3 Power supply ripple voltage, VCCR -- mVrms Ripple frequency, fr -- Hz 5 7 10k 2 ILA00946 No. 7140-4/5 LA2902V 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 ILA00947 --100 10 23 5 7 100 23 5 7 1k 23 5 7 10k 23 Input frequency, f -- Hz 5 7100k ILA00948 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 ILA00949 --100 10 23 5 7 100 23 5 7 1k 23 5 7 10k 23 Input frequency, f -- Hz 57 100k ILA00950 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. 7140-5/5 |
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