Ordering number : ENN6950A Monolithic Linear IC LA2900M Two-Channel High-Output Line Amplifier for Car Audio Systems Overview Package Dimensions 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. unit: mm 3036C-MFP20 12.5 0.1 0.15 0.63 5.4 10 1 Functions and Features • • • • • 7.6 11 20 (1.5) 1.7max 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. [LA2900M] High output level (5.3 V rms) Low output noise voltage (12 µV) Low total harmonic distortion (0.003%) High ripple rejection ratio (70 dB) Excellent audio fidelity 0.35 1.27 (0.4) SANYO: MFP20 (300mil) 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 12 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 N1501TN (OT)/51101RM (OT) No. 6950-1/5 LA2900M Recommended Operating Conditions at Ta = 25°C Parameter Recommended operating voltage Symbol 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 Quiescent current Symbol ICCO Conditions Rg = 0 Ratings min typ Unit max 7 11 15 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 = 1 kHz, VCCR = 100 mV, BPF = 20 Hz to 20 kHz 60 70 Channel separation CHsep Rg = 10 kΩ, VO = 1 Vrms 60 70 20 30 Input resistance Ri mA dB Vrms 0.003 0.01 12 17 % µVrms dB dB 39 kΩ No. 6950-2/5 LA2900M Block Diagram 36kΩ VCC 2 36kΩ 19 + -- 4 + 18 C11 0.1µF C9 100µF AMP + 30kΩ OUT1 + SIG -AMP 3 16 220Ω C7 1.5µF + VREF VIN1 + C8 22µF RL 10kΩ + -LIFT + 24kΩ -C1 22µF C10 1.5µF 17 5 24kΩ 14 9 36kΩ 12 + -- + C6 1.5µF -LIFT + 24kΩ + 13 C5 100µF 47µF 7 + C2 22µF + 30kΩ OUT2 + SIG -- 8 15 220Ω + VIN2 + C4 22µF C3 1.5µF RL 10kΩ -- VREF 6 24kΩ 36kΩ ILA00765 LIFTout1 GND1 SIGout1 SIGout2 GND2 LIFTout2 LIFTVD2 20 LIFTVD1 Pin Assignment 19 18 17 16 15 14 13 12 11 10 LA2900M 2 3 4 5 6 7 8 9 VCC1 IN1 DC1 NF1 NF2 DC2 IN2 VCC2 Top view 1 ILA00766 No. 6950-3/5 LA2900M VO -- VCC 7 Output voltage, VO – V 5 Total harmonic distortion, THD -- % f=1kHz VG=8.0dB RL=10kΩ THD=0.1% LPF=80kHz 6 4 3 2 1 2 4 6 8 10 Supply voltage, VCC -- V 3 2 0.1 7 5 kHz 3 f=10 2 0.01 7 5 12 f=1kHz 16 14 12 8 10 12 Supply voltage, VCC -- V 14 2 1 Converted to 0 dB = VG 8.0 dB 0 --1 --2 --3 6 ILA00768 --60 2 3 5 7 1k 2 3 5 Frequency, f -- Hz 7 10k ILA00770 Separation -- Frequency VCC=9V RL=10kΩ VG=8.0dB Rg=10kΩ --20 Separation, Sep -- dB 3 5 --40 0 VCC=9V VO=0dBm VG=8.0dB RL=10kΩ 4 --20 ILA00769 Frequency Characteristics 5 4 VCC=9V Rg=0 VCCR=100mV DIN=AUDIO RL=10kΩ VG=8.0dB --80 100 10 6 3 SVRR -- Frequency 0 18 4 2 Output voltage, VO -- Vrms Ripple rejection ratio, SVRR -- dB 20 1 ILA00767 VG=8.0dB DIN=AUDIO(20 to 20kHz) Rg=0 RL=10kΩ 22 f=100Hz 0 VNO -- VCC 24 Output noise voltage, VNO -- µV VCC=9V VG=8.0dB RL=10kΩ LPF=80kHz Rg=600Ω 3 2 0 Response -- dB THD -- VO 1.0 7 5 --40 --60 VO=1V VO=3V --80 --4 --100 --5 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Frequency, f -- Hz 2 3 5 7100k ILA00771 2 3 5 7 100 2 3 5 7 1k 2 3 Frequency, f -- Hz 5 7 10k 2 3 5 ILA00772 No. 6950-4/5 LA2900M 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 November, 2001. Specifications and information herein are subject to change without notice. PS No. 6950-5/5