Ordering number : ENA0893 Bi-CMOS LSI LV4910T Class-D Audio Power Amplifier BTL 2W × 2ch Overview LV4910T is a stereo digital amplifier for portable equipment, for example notebook-PC, portable DVD and portable mini-speakers. It is characterized by the use of an original feedback technology to improve sound quality though it is Class-D amplifier, and does not need the LC filter in the output stage. Features • D-class high-efficiency amplifier • Low pop sound at SW changeover • Differential input type Functions • 2W stereo digital power amplifier • Standby switch • Mute switch • Various protective circuits (over-current protective, thermal protective, and under-voltage circuits) incorporated Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Allowable power dissipation Symbol Conditions VCC max Pd max Ratings Unit 6 as mounted on the substrate V 1.05 W Operating temperature Topr -20 to +75 °C Storage temperature Tstg -40 to +150 °C Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. If you should intend to use our products for applications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. Specifications of any and all SANYO Semiconductor Co.,Ltd. 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. 90507 MS PC 20070709-S00007 No.A0893-1/7 LV4910T Operating Conditions at Ta = 25°C Parameter Symbol Recommended supply voltage VCC Operation supply voltage range VCC opg Recommended load resistance RL Conditions Ratings Unit 5 V 2.5 to 5.5 V 4 Ω Speaker Electrical Characteristics Ta = 25°C, VCC = 5V, f = 1kHz, RL = 4Ω Parameter Symbol Ratings Conditions min Standby current Ist Current at no signal ICCO mute Voltage gain VG Channel balance Output power max Current at ST ON ICCO1 Current at Mute Unit typ 1 μA At LC filter-less 12 20 mA At Mute of speaker 10 16 mA 23 25 dB 0 1 dB VO = 0dBm 21 ΔVG VO = 0dBm -1 PO THD = 10% 2 W Total harmonic distortion THD PO = 0.5W, DIN AUDIO 0.4 0.7 % Output noise voltage VNO Rg = 0, DIN AUDIO 100 200 μV Crosstalk CT VO = 0dBm, TUN 1kHz -60 -40 dB Ripple rejection ratio RR fr = 100Hz, Vr = -10dBm, TUN 100Hz -40 -30 dB dB Common mode rejection ratio CMRR VO = 0dBm, DIN AUDIO -60 -40 Mute attenuation value VOFF VO = 0dBm, DIN AUDIO -80 -70 Oscillation frequency FPWM Standby ON voltage sensitivity dB 300 VPWROFF Standby ON start voltage Standby OFF voltage sensitivity VPWRON Standby OFF start voltage Mute ON voltage sensitivity VMUTEON Mute ON start voltage Mute OFF voltage sensitivity VMUTEOFF Mute OFF start voltage kHz 1 V 3 V 0.5 V 2 V * Electrical characteristics vary depending on the substrate layout and selection of external parts. For measurement of the above characteristics, the coil : 22μH (Toko Kabushiki Kaisha made D63CB) is used. Package Dimensions unit : mm (typ) 3259 Pd max -- Ta 9.75 30 0.5 7.6 5.6 16 15 1 0.15 (1.0) 1.2max 0.22 1.05 1.0 0.63 0.5 0 – 20 0.08 0.65 (0.33) Allowable power dissipation, Pd max – W 1.5 0 20 40 60 80 100 Ambient temperature, Ta – °C SANYO : TSSOP30(275mil) No.A0893-2/7 LV4910T Block Diagram 22μH GND2 OUT+2 3 0.33μF NC 4 6 0-5V RECEIVER 1μF PRE GND VREF MUTE 9 RF CAP 28 OUT 1 RL 22μH + 26 220μF VCC1 1μF Pre VCC 24 23 22 21 STBY 10 0-5V BIAS MUTE 4.7μF 1μF 0.33μF 25 THERMAL BIAS MUTE 7 MUTE CAP 8 CONTROL DE LAY 1μF 5 RECEIVER VCC2 + 22μH 30 OUT 1 0.33μF GND1 29 27 NC CONTROL DE LAY 220μF + OUTPUTSTAGE 22μH 2 OUTPUTSTAGE RL OUTPUTSTAGE 0.33μF OUTPUTSTAGE 1μF OUT-2 1 11 20 PRE GND 12 1μF IN_CH2+ 1μF IN_CH2PRE GND R.F. 19 13 18 14 17 15 16 IN_CH1+ 1μF IN_CH1- 1μF VREF OUT 22μF PRE GND No.A0893-3/7 LV4910T Pin Descriptions Pin No. Pin name Pin voltage (V) 1 OUT-2 OUT+2 2.58 3 30 OUT-1 OUT+1 2 GND2 4 NC 5 VCC2 6 NC 7 NC 8 MUTE CAP 28 Pin description Equivalent circuit • Power outputs 0 • Non-connection 5 • Non-connection • Non-connection 4.9 • Connection for the mute switch On/Off impulse noise reduction capacitor 20kΩ 300kΩ 9 • Mute On/Off switch MUTE • 2 to 5.5V : Mute Off • 0 to 0.7V : Mute On 100kΩ 20kΩ 300kΩ 10 RF CAP 2.6 • Ripple filter reference 100kΩ 300Ω 45kΩ 100kΩ 11 NC 12 NC 13 IN_ch2+ IN_ch2- 14 17 18 IN_ch1IN_ch1+ • Non-connection • Non-connection 2.4 • Signal input 300Ω 30kΩ Continued on next page. No.A0893-4/7 LV4910T Continued from preceding page. Pin No. Pin name Pin voltage (V) 15 PRE GND 0 16 VREF OUT 2.55 Pin description Equivalent circuit • VREF amplifier reference 1kΩ NC • Non-connection 20 NC • Non-connection 21 STBY 19 • STBY On/Off switch • 0 to 1V : Power Off • 3 to 5.5V : Power On 1kΩ 20kΩ 300kΩ 10kΩ 22 NC • Non-connection 23 NC • Non-connection • Non-connection 24 NC 25 PRE VCC 5 26 VCC1 5 27 NC 29 GND1 • Non-connection 0 No.A0893-5/7 LV4910T Ist, ICCO -- VCC 0.7 VG -- f 25.0 ch2 ch1 I CCO 20 (μ Ist 0.5 A) 0.4 0.3 15 0.2 10 0.1 20.0 Voltage gain, VG – dB ) (mA Standby current, Ist – μA Quiescent current, ICCO – mA 0.6 25 15.0 10.0 5.0 5 VCC = 5V RL = 4Ω VO = 0dBm 0 –0.1 0 1 0 2 3 4 5 0 10 6 2 3 5 7 100 2 3 Supply voltage, VCC – V Output power, PO – W 2.5 PO -- VCC ) 2.0 % D = 10 H 1.5 PO (T 1.0 0.5 0 2 2.5 3 3.5 4 4.5 5 5.5 1.2 Ripple rejection ratio, SVRR – dB Output power, PO – W im ss nd c a h1 c 0.010 7 5 3 2 60 50 0.8 40 2 3 5 7 2 0.1 3 5 7 .6 Pd 0.4 P 20 VCC = 3.6V, 5V RL = 4Ω f = 1kHz 2 3 5 7 2 1 3 5 7 10 0 10 –5 SVRR -- f VCC = 5V RL = 4Ω VR = -10dBm, non-filter – 10 – 15 – 20 – 25 – 30 – 35 ch1 and ch2 is similar – 40 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7 100k 100.00 7 5 3 2 ch2 ch1 THD+N -- PO RL = 4Ω f = 1kHz DIN AUDIO 10.00 7 5 3 2 1.00 7 5 ch1 ch2 THD+N -- f VCC = 5V RL = 4Ω PO = 0.5W, DIN AUDIO THD+N – % THD+N – % 30 V) 5 d( Frequency, f – Hz 3 2 3 2 3 2 0.01 10 (3 0.2 10 1 1.00 7 5 0.10 7 5 V) 0.6 Input voltage, VIN – Vrms 3 2 70 6V) – 45 0.001 0.01 10.00 7 5 80 1.0 10 r ila 0.100 7 5 3 2 5 7100k Output power, PO – W RL = 4Ω VCC = 5V f = 1kHz i h2 2 3 η (3. 0 0.1 6 PO -- VIN 1.000 7 5 3 2 5 7 10k V) η (5 Supply voltage, VCC – V 10.000 7 5 3 2 2 3 Pd, η -- PO 1.4 RL = 4Ω f = 1kHz THD = 10% Allowable power dissipation, Pd – W 3.0 5 7 1k Frequency, f – Hz η – % 30 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Frequency, f – Hz 2 3 5 7100k 0.10 0.1 2 3 5 7 1 2 3 5 7 10 Output power, PO – W No.A0893-6/7 LV4910T – 45 Crosstalk, CT – dB – 50 CT -- f VNO -- VCC 150 VCC = 5V RL = 4Ω Rg = 0Ω VO = 0dBm, non-filter RL = 4Ω Rg = 0Ω DIN AUDIO 140 Output noise voltage, VNO – μV – 40 – 55 2→1 – 60 1→2 – 65 – 70 – 75 130 120 110 100 ch1 90 ch2 80 70 60 – 80 50 10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Frequency, f – Hz 2 3 5 7100k 2 2.5 3 3.5 4 4.5 5 5.5 6 Supply voltage, VCC – V SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents 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 Semiconductor Co.,Ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require 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 consent of SANYO Semiconductor 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 Semiconductor Co.,Ltd. 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. Upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. This catalog provides information as of September, 2007. Specifications and information herein are subject to change without notice. PS No.A0893-7/7