LA2900

Ordering number : ENN6950A Monolithic Linear IC LA2900M Two-Channel High-Output Line Amplifier for Car Audio Systems 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. Package Dimensions unit: mm 3036C-MFP20 [LA2900M] 20 11 12.5 0.15 • • • • • 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 SANYO: MFP20 (300mil) Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg With no input signal Ta ≤ 85°C, Mounted on a printed circuit board (114.3 × 76.1 × 1.6 mm3, glass epoxy) Conditions Ratings 12 400 –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 N1501TN (OT)/51101RM (OT) No. 6950-1/5 0.1 Functions and Features (0.4) 0.63 1 10 (1.5) 1.7max 5.4 7.6 LA2900M Recommended Operating Conditions at Ta = 25°C 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 kΩ Electrical Characteristics at Ta = 25°C, VCC = 9 V, RL = 10 kΩ, f = 1 kHz, Rg = 600Ω 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 = 1 kHz, VCCR = 100 mV, BPF = 20 Hz to 20 kHz Rg = 10 kΩ, VO = 1 Vrms 60 60 20 Conditions Ratings min 7 7.5 5.0 typ 11 8 5.3 0.003 12 70 70 30 39 0.01 17 max 15 8.5 Unit mA dB Vrms % µVrms dB dB kΩ No. 6950-2/5 LA2900M Block Diagram 36kΩ 2 36kΩ + -19 24kΩ -LIFT + 18 AMP VCC C10 1.5µF + C9 100µF C11 0.1µF 4 + -30kΩ + SIG -AMP VREF OUT1 16 + C8 22µF RL 10kΩ C5 100µF ILA00765 C1 22µF + + 3 220Ω C7 1.5µF VIN1 5 24kΩ 17 14 9 36kΩ + + 47µF 7 + -C2 22µF + + VIN2 6 VREF 30kΩ + SIG -OUT2 15 220Ω + C4 22µF RL 10kΩ -24kΩ 12 -LIFT + 13 C6 1.5µF + 8 C3 1.5µF Pin Assignment LIFTout1 LIFTout2 13 LIFTVD1 LIFTVD2 12 11 SIGout1 SIGout2 15 GND1 GND2 14 24kΩ 36kΩ 20 19 18 17 16 LA2900M Top view 1 2 VCC1 3 IN1 4 DC1 5 NF1 6 NF2 7 DC2 8 IN2 9 VCC2 10 ILA00766 No. 6950-3/5 LA2900M VO -- VCC Total harmonic distortion, THD -- % f=1kHz VG=8.0dB RL=10kΩ THD=0.1% LPF=80kHz 7 6 1.0 7 5 3 2 0.1 7 5 3 2 0.01 7 5 3 2 THD -- VO VCC=9V VG=8.0dB RL=10kΩ LPF=80kHz Rg=600Ω Output voltage, VO – V 5 4 3 f=10 kHz 2 1 0 2 4 6 8 10 12 ILA00767 f=1kHz f=100Hz 0 1 2 3 4 5 6 ILA00768 Supply voltage, VCC -- V 24 Output voltage, VO -- Vrms 0 VNO -- VCC Ripple rejection ratio, SVRR -- dB VG=8.0dB DIN=AUDIO(20 to 20kHz) Rg=0 RL=10kΩ SVRR -- Frequency VCC=9V Rg=0 VCCR=100mV DIN=AUDIO RL=10kΩ VG=8.0dB Output noise voltage, VNO -- µV 22 20 --20 18 --40 16 14 --60 12 10 4 6 8 10 12 14 ILA00769 --80 100 2 3 5 7 1k 2 3 5 Supply voltage, VCC -- V 5 4 3 2 Frequency, f -- Hz 7 10k ILA00770 Frequency Characteristics VCC=9V VO=0dBm VG=8.0dB RL=10kΩ 0 Separation -- Frequency VCC=9V RL=10kΩ VG=8.0dB Rg=10kΩ --20 1 Separation, Sep -- dB Response -- dB --40 Converted to 0 dB = VG 8.0 dB 0 --1 --2 --3 --4 --5 23 5 7 100 23 5 7 1k 23 5 7 10k 23 --60 VO=1V --80 VO=3V --100 Frequency, f -- Hz 5 7100k ILA00771 23 5 7 100 23 5 7 1k 23 5 7 10k 23 5 Frequency, f -- Hz 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