Ordering number : ENN7139 Monolithic Linear IC LA2901V Four-Channel High-Output Line Amplifier for Car Audio Systems Overview Package Dimensions 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. unit: mm 3175B-SSOP24 (275 mil) [LA2901V] 7.8 0.5 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. 1 0.15 0.22 (1.3) 0.65 0.1 1.5max (0.33) Functions and Features • • • • • • 7.6 5.6 24 High output level (5.3 Vrms) Low output noise voltage (12 µV) 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 = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol VCC max Pd max Conditions Ratings With no input signal Ta ≤ 85°C, Mounted on a printed circuit board (114.3 × 76.1 × 1.6 mm3, glass epoxy) Unit 13 V 400 mW Operating temperature Topr –40 to +85 °C Storage temperature Tstg –40 to +150 °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 LA2901V Recommended Operating Conditions at Ta = 25°C Parameter Symbol Recommended operating voltage Conditions Ratings VCC Unit 9 V V Allowable operating supply voltage range VCCOP 6 to 12 Recommended load resistance RLOP 10 kΩ Electrical Characteristics at Ta = 25°C, VCC = 9 V, RL = 10 kΩ, f = 1 kHz, Rg = 600Ω Parameter Symbol Quiescent current Ratings Conditions ICCO min typ Unit max Rg = 0 10 16 22 Voltage gain VG VO = 0 dBm 7.5 8 8.5 Output voltage VO THD = 0.1% 5.0 5.3 Total harmonic distortion THD VO = 3 Vrms, LPF = 80 kHz Output noise voltage VNO Rg = 0, BPF = 20 Hz to 20 kHz Ripple rejection ratio SVRR Rg = 0, fr = 100 Hz, Vr = 100 mVrms, BPF = 20 Hz to 20 kHz 60 70 Channel separation CHsep Rg = 10 kΩ, VO = 1 Vrms 60 70 21 30 Input resistance Ri mA dB Vrms 0.004 0.01 12 17 % µVrms dB dB 39 kΩ LF OUT LR OUT L GND LIFT L VD LIFT L OUT VCC L VCC R LIFT R OUT LIFT R VD R GND RF OUT RR OUT Pin Assignment 24 23 22 21 20 19 18 17 16 15 14 13 LA2901V 2 3 4 5 6 7 8 9 10 11 12 LF IN-- LF IN+ N.C LR IN-- LR IN+ DC L DC R RF IN+ RF IN-- N.C RR IN+ RR IN-- Top view 1 ILA00924 No. 7139-2/5 LA2901V Sample Application Circuit and Block Diagram 24kΩ 36kΩ SIGNAL AMP -- 1 LF-IN 3 VREF -+ VCC SIGNAL AMP -- 4 23 + 5 VREF LF-OUT 30kΩ LR-IN + 22µF 22µF + 10kΩ + 2 + 22µF 24 -+ 22 VCC 22µF + LR-OUT 10kΩ 24kΩ 36kΩ 30kΩ LIFT AMP + X + 20 100µF 21 -- 6 VREF -+ 12kΩ 1.5NF DC-L 36kΩ Ripple Filter + 19 VREF 12kΩ + -- 36kΩ 1.5NF 47µF 7 DC-R VCC 9.0V 10µF + 18 -LIFT AMP + 16 VREF + -- 30kΩ VCC 15 RF-IN 8 + 22µF + 14 VREF + -- 30kΩ SIGNAL AMP 22µF + RF-OUT 10kΩ -- 9 10 100µF 17 + X VCC RR-IN -- 12 13 SIGNAL AMP 22µF + RR-OUT 10kΩ + 11 + 22µF 36kΩ 24kΩ 24kΩ 36kΩ ILA00923 Note: We recommend using resistors with tolerances of 1% or better for the 24 kΩ and 36 kΩ feedback resistors. No. 7139-3/5 LA2901V ICCO, VN -- VCC 25 VO -- VCC 8 25 RL=10kΩ f=1kHz THD=0.1% Rg=600Ω L.P.F=80kHz 20 I CCO 15 15 10 10 VN 5 5 0 2 4 6 8 10 2 3 7 8 9 10 11 Supply voltage, VCC — V VCC=9V RL=10kΩ VO=0dBm Rg=600Ω 1 2 10kHz 0.01 7 5 1kHz 3 Response — dB 3 12 ILA00926 f Response -- f 2 0.1 7 5 0 --1 100Hz 2 0 1 2 3 4 5 Output voltage, VO — Vrms --2 10 6 20 10 9 10 11 Supply voltage, VCC — V 12 --60 --80 --100 0 200 400 600 800 Power supply ripple voltage, VCCR — mVrms 1000 ILA00931 Ripple rejection ratio, SVRR — dB --40 5 7 10k 2 3 5 7100k ILA00928 30 20 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Input resistance, Rg — Ω 2 3 5 7100k ILA00930 SVRR -- fr --20 VCC=9V RL=10kΩ fr=1kHz Rg=0 DIN AUDIO 2 3 VNO -- Rg ILA00929 SVRR -- VCCR --20 5 7 1k VCC=9V RL=10kΩ DIN AUDIO 0 10 0 8 2 3 Input frequency, f — Hz Output noise voltage, VNO — µVrms 30 7 5 7 100 40 Rg=0 RL=10kΩ DIN AUDIO 6 2 3 ILA00927 VNO -- VCC 40 Output noise voltage, VNO — µVrms 4 6 0.001 Ripple rejection ratio, SVRR — dB 5 ILA00925 VCC=9V RL=10kΩ Rg=600Ω L.P.F=80kHz 3 6 2 THD -- VO 1.0 7 5 Total harmonic distortion, THD — % 0 14 12 Supply voltage, VCC — V 7 Output voltage, VO — Vrms 20 Output pin voltage, VN — V Quiescent current, ICCO — mA RL=10kΩ Rg=0 VCC=9V RL=10kΩ VCCR=100mVrms Rg=0 DIN AUDIO --40 --60 --80 --100 10 2 3 5 7 100 2 3 5 7 1k 2 Ripple frequency, fr — Hz 3 5 7 10k 2 ILA00932 No. 7139-4/5 LA2901V CH Sep -- f CH Sep -- f --40 --20 VCC=9V RL=10kΩ LR=1Vrms Rg=10kΩ Channel separation, CH sep — dB Channel separation, CH sep — dB --20 --60 LF Rch --80 --100 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Input frequency, f — Hz 2 3 5 7100k ILA00933 --40 VCC=9V RL=10kΩ LF=1Vrms Rg=10kΩ --60 LR Rch --80 --100 10 2 3 5 7 100 CH Sep -- f 2 3 5 7 10k 2 3 5 7100k ILA00934 --20 VCC=9V RL=10kΩ RR=1Vrms Rg=10kΩ Channel separation, CH sep — dB Channel separation, CH sep — dB 5 7 1k CH Sep -- f --20 --40 2 3 Input frequency, f — Hz --60 RF Lch --80 --100 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Input frequency, f — Hz 2 3 5 7100k ILA00935 --40 VCC=9V RL=10kΩ RF=1Vrms Rg=10kΩ --60 RR Lch --80 --100 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Input frequency, f — Hz 2 3 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