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| Ordering number : ENA0739C Bi-CMOS IC LV4991TT Overview For Portable Audio Equipment Monaural BTL Power Amplifier LV4991TT incorporates the power amplifier circuit operable at low voltage (2.7V or more) and has additionally the standby function to reduce the current drain. This is the best LSI for speaker drive for the battery-driven portable equipment, such as IC recorders, portable radios, etc. The LV4991TT is a MSOP8 (150mil) package, and The LV4991TH of HMSOP8 (150mil) package is available. Function and Feature * Monaural BTL power amplifier incorporated Standard output power = 450mW (VCC = 3.6V, RL = 8, THD = 10%) Output coupling capacitor not necessary because of differential output type * Operation at low voltage possible VCC = 2.7V or more * Standby function incorporated Standard current drain at standby = 0.1A (VCC = 3.6V) * Second amplifier stop control function incorporated : Reducing the pop sound at startup, simple MUTE * Overheat protection circuit incorporated * Gain setting possible BTL voltage gain = 0 to 26dB * Output phase compensation capacitor not necessary 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. 80807 MS / 62707 MS PC / 52307 MS IM / 41807 MS PC 20070322-S00004 No.A0739-1/11 LV4991TT Specifications Maximum Ratings at Ta = 25C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max Pd max Topr Tstg Substrate mounted* Conditions Ratings 6 750 -40 to +85 -40 to +150 Unit V mV C C * Substrate mounted : with 58mm x 89mm x 1.6mm, glass epoxy substrate Operating Conditions at Ta = 25C Parameter Recommended supply voltage Recommended load resistance Allowable operating supply voltage range Symbol VCC RL VCC op1 VCC op2 (at RL = 8) (at RL = 16 to 32) Conditions Ratings 3.6 8 to 32 2.7 to 4.0 2.7 to 5.5 Unit V V V * Determine the supply voltage to be used with due consideration of allowable power dissipation. Electrical Characteristics Ta = 25C, VCC = 3.6V, fin = 1kHz, RL = 8 Parameter Quiescent current drain Stand-by current drain Maximum output power Voltage gain Voltage gain use range Total harmonic distortion ratio Output noise voltage Ripple removal ratio Output offset voltage Reference (pin 3) voltage Pin 2 control HIGH voltage Pin 2 control LOW voltage Pin 4 control HIGH voltage Pin 4 control LOW voltage Symbol ICCOP ISTBY POMX VG VGR THD VNOUT SVRR VOS VREF VSTBH VSTBL VCNTH VCNTL Power amplifier operation mode Power amplifier standby mode Second power amplifier operation mode Second power amplifier standby mode 1.9 0 1.6 0 VIN = -30dBV Rg = 620, 20 to 20kHz Rg = 620, fr = 100Hz, Vr = -20dBV Rg = 620 -50 1.81 VCC 0.3 VCC 0.3 Conditions min No signal, RL = No signal, RL = , V2 = LOW THD = 10% VIN = -30dBV 300 4.5 0 0.3 120 48 50 Ratings typ 3.6 0.1 450 6 7.5 26 1 280 max 6 10 mA A mW dB dB % Vrms dB mV V V V V V Unit No.A0739-2/11 LV4991TT Package Dimensions unit : mm (typ) 3245B Allowable power dissipation, Pd max - mW 1000 900 Pd max - Ta Specified circuit board : 58x89x1.6mm3 glass epoxy board Specified substrate 3.0 8 800 (Both sides) 750 Specified substrate 700 (One sides) 650 600 500 400 300 200 100 0 - 40 - 20 0 20 40 60 80 100 390 338 3.0 4.9 1 (0.53) 2 0.65 0.25 (0.85) 1.1MAX 0.125 0.5 Ambient temperature, Ta - C SANYO : MSOP8(150mil) Recommended substrate 1. Two sided substrate Size : 58mmx89mmx1.6mm 0.08 Top Layer Bottom Layer 2. One sided substrate Size : 58mmx89mmx1.6mm Top Layer Bottom Layer No.A0739-3/11 LV4991TT Block Diagram and Sample Application Circuit V + C1 CC 2.2F R2 22k C2 0.1F R1 C3 0.33F 22k IN 1 VCC 2 BIAS + TSD AMP1 VCC 8 OUT1 VCC from CPU R3 10k STBY 7 GND VREF C4 1F from CPU CNT R4 10k 3 + 6 GND 4 CONTROL AMP2 5 OUT2 Test Circuit + VCC 2.2F R2 22k 0.1F 0.33F VIN 620 VSTBY 22k 1 10k 2 7 8 LV4991TT 3 1F 10k 4 5 6 8 No.A0739-4/11 LV4991TT Pin Description Pin voltage Pin No. 1 IN Symbol VCC = 3.6V 1.81 Input pin Description Equivalent circuit VCC 1 3k + - 2 STBY Standby pin *Standby mode at 0 to 0.3V *Operation mode at 1.9 to VCC VCC 2 21k 121.4k 40.7k GND 3 VREF 1.81 Ripple filter pin (For connection of capacitor for filter) VCC 100k VCC 450k 3 101k GND 4 CNT Second amplifier stop control pin *Second amplifier stopped at 0 to 0.3V VCC 4 11k 100k 20A GND 5 8 OUT2 OUT1 1.81 Power amplifier output pin VCC 5 8 10k + - 6 7 GND VCC Ground pin Power pin No.A0739-5/11 LV4991TT Cautions for use 1. Input coupling capacitor (C3) The input coupling capacitor C3 and input resistor R1 make up the high-pass filter, attenuating the bass frequency. Therefore, the capacitance value must be selected with due consideration of the pass band. Note with care that this capacitance value affects the pop sound at startup. Namely, the increased capacitance value will make the pop sound louder. 2. Pin 3 capacitor (C4) This capacitor C4 is designed to reduce the power ripple. The ripple removal ratio increases when the capacitance is larger. Note however that this capacitor affects the pop sound at startup. Design must therefore be made by taking into both features as above described. 3. Pin 4 control (second amplifier stop control function) Pin 4 is a pin to turn ON/OFF the operation of second amplifier. By using this function, the pop sound at startup can be reduced. Note that pin 4 can be controlled by applying the voltage described below : Second amplifier ON V4 = 1.6 to VCCV or OPEN Second amplifier OFF V4 = 0 to 0.3V When the pin-3 capacitor C4 is downsized, the pop sound becomes louder. The pop sound can be reduced by providing the time Tmu to stop the second amplifier (see Fig. 1) while utilizing this function of the microcomputor. The recommended mute time Tmu is as follows. Pin 2:STBY Pin 4:CNT C4 [F] Tmu [ms] 0.1 170 0.22 270 0.33 280 Between pins 8 and 5: OUT1-OUT2 AMP2:ON Tmu time Fig. 1 4. Standby pin (pin 2) By controlling the standby pin, the mode changeover can be made between standby and operation modes. Standby mode V2 = 0 to 0.3V Operation mode V2 = 1.9 to VCCV When using the standby pin as interlocked with power supply as shown in Fig. 2, care should be taken because the current ISTBY as expressed by the following equation flows through the standby pin. VCC VCC-1.4V ISTBY = R3+21k VCC R3 7 STBY 2 Fig. 2 No.A0739-6/11 LV4991TT 5. Bypass capacitor (C2) of the power supply block The bypass capacitor attached to the power pin (pin 7) must be arranged as near to this pin as possible. 6. Short-circuit between pins When power is applied with pins left short-circuited, deterioration or damage may result. Therefore, check before power application if pins are short-circuited with solder, etc. during mounting of IC to the substrate. 7. Short-circuit of load If the load is left short-circuited for a long period of time, deterioration or damage may occur. Never allow the load to short-circuit. 8. Maximum rating When IC is used near the maximum rating, there is a possibility that the maximum rating may be exceeded even under the smallest change of conditions, resulting in failure. Take the sufficient margin for variation of supply voltage and use IC within a range where the maximum rating will never be exceeded. No.A0739-7/11 LV4991TT 100 7 5 3 2 10 7 5 3 2 1 7 5 3 2 0.1 10 2 3 5 7 100 2 3 5 7 1000 THD -- PO Total harmonic distortion, THD -- % RL = 8 VG = 6dB fin = 1kHz 200 100 7 5 3 2 10 7 5 3 2 1 7 5 3 2 0.1 THD -- PO RL = 16 VG = 6dB fin = 1kHz 200 VCC = 3.6V VCC = 3.6V VCC = 3V VCC = 5V 10 VCC = 5V 5 7 1000 5.5 6.5 2 3 5 7 100 2 3 Output power, PO -- mW 100 7 5 3 2 10 7 5 3 2 1 7 5 3 2 0.1 10 2 3 5 7 100 2 3 5 7 1000 THD -- PO Output power, PO -- mW 1400 PO -- VCC Total harmonic distortion, THD -- % RL = 32 VG = 6dB fin = 1kHz 200 1000 TH D T HD = 2.5 3.5 4.5 = 1% 800 600 400 200 0 1.5 VCC = 3.6V Output power, PO -- mW 1200 VCC = 3V VCC = 5V PO -- VCC Supply voltage, VCC -- V 700 PO -- VCC = Output power, PO -- mW D Output power, PO -- mW TH TH D 500 400 = 1000 10 fin = 1kHz VG = 6dB RL = 16 800 T 600 HD = 1% T HD 300 400 200 200 100 0 1.5 0 1.5 10 600 fin = 1kHz VG = 6dB RL = 32 10 % 1200 fin = 1kHz VG = 6dB RL = 8 % = % 1% 2.5 3.5 4.5 5.5 6.5 2.5 3.5 4.5 5.5 6.5 Supply voltage, VCC -- V 700 Pd -- PO Supply voltage, VCC -- V 400 350 Pd -- PO 600 RL = 8 VG = 6dB fin = 1kHz VCC = 5.0V RL = 16 VG = 6dB fin = 1kHz VCC = 5.0V Power dissipation, Pd -- mW Power dissipation, Pd -- mW 500 300 250 200 150 100 50 0 10 400 VCC = 3.6V VCC = 3.0V VCC = 3.6V VCC = 3.0V 300 200 100 0 10 2 3 5 7 100 2 3 5 7 1000 2 3 5 7 100 2 3 5 7 1000 Output power, PO -- mW Output power, PO -- mW No.A0739-8/11 LV4991TT 600 PO -- RL VCC = 3.6V VG = 6dB fin = 1kHz 200Hz 8 7 6 5 4 3 2 1 0 10 VG -- f 500 Output power, PO -- mW C IN F =1 400 300 200 THD = 10% 100 CI N = 0. 33F CI N = 0. 22F CI N =0 .1F THD = 1% 0 10 20 30 40 50 60 70 0 VCC = 3.6V RL = 8 VIN = -30dBV Rin = 22k 23 5 7 100 23 5 7 1k 23 5 7 10k 23 57 100k Load resistance, RL -- 4 3.5 Frequency, f -- Hz 4 3.8 ICCO -- VSTBY ICCO -- VCNT Supply current, ICCO -- mA 3 2.5 2 1.5 1 0.5 0 n 0.5 0 1 2 Supply current, ICCO -- mA 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 VCC = 3.6V VG = 6dB RL = 8 3 4 2 0 VCC = 3.6V VG = 6dB RL = 8 1 2 3 4 2pin voltage, VSTBY -- V 6 ICCO -- VCC 4pin voltage, VSTBY -- V 60 SVRR -- f Supply voltage ripple rejection, SVRR -- dB 5 55 Supply current, ICCO -- mA 4 50 3 45 2 40 1 35 0 0 1 2 3 4 5 RL = 6 30 10 VCC = 3.6V VG = 6dB RL = 8 Vr = -20dBV CVCC=0.1F 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k Supply voltage, VCC -- V 140 Frequency, f -- Hz 0 -10 VNO -- VCC VMUTE -- VIN VCC = 3.6V VCNT = 0V f = 1kHz RL = 8 VG = 6dB 20Hz 5.5 120 Noise voltage, VNO -- Vrms -20 -30 -40 -50 -60 -70 100 80 60 40 20 0 2.5 VCC = 3.6V Rg = 620 RL = 8 VG = 6dB 20Hz -80 -30 -20 -10 0 10 Supply voltage, VCC -- V Input voltage, VIN -- V No.A0739-9/11 LV4991TT 4 3.5 ICCO -- Ta 160 140 VNO -- Ta Supply current, ICCO -- mA Noise voltage, VNO -- V 3 2.5 2 1.5 1 0.5 0 -50 120 100 80 60 40 20 0 -50 VCC = 3.6V VG = 6dB RL = 0 50 100 VCC = 3.6V Rg = 0 RL = 8 VG = 6dB 20Hz Temperature, Ta -- C 1200 1100 1000 Temperature, Ta -- C 1200 1100 1000 PO -- Ta RL = 8 VG = 6dB THD = 10% fin = 1kHz 200Hz RL = 8 VG = 6dB THD = 1% fin = 1kHz 200Hz 800 700 600 500 400 300 200 100 0 -50 0 50 100 Output power, PO -- mW 900 900 800 700 600 500 400 300 200 100 0 -50 0 VCC = 4 V VCC = 3.6V VCC = 4 V VCC = 3.6V VCC = 3V VCC = 3V 50 100 Temperature, Ta -- C 1200 1100 1000 Temperature, Ta -- C 1200 1100 1000 PO -- Ta RL = 16 VG = 6dB THD = 10% fin = 1kHz 200Hz RL = 16 VG = 6dB THD = 1% fin = 1kHz 200Hz Output power, PO -- mW 900 800 700 600 500 400 300 200 100 0 -50 0 900 800 700 600 500 400 300 200 100 VCC = 5V VCC = 5V VCC = 3.6V VCC = 3V VCC = 3.6V VCC = 3V 50 100 0 -50 0 50 100 Temperature, Ta -- C 800 700 Temperature, Ta -- C 800 700 PO -- Ta RL = 32 VG = 6dB THD = 10% fin = 1kHz 200Hz PO -- Ta RL = 32 VG = 6dB THD = 1% fin = 1kHz 200Hz Output power, PO -- mW 600 500 400 300 600 500 400 300 200 100 0 -50 VCC = 5V VCC = 3.6V 200 100 0 -50 VCC = 3V VCC = 3.6V VCC = 3V 0 50 100 0 50 10 Temperature, Ta -- C Temperature, Ta -- C No.A0739-10/11 LV4991TT Pop sound 1. Startup 2pin : 5V/div, DC STBYPWR OUT1-OUT2 : 10mV/div, AC PWRSTBY 2. Fall 2pin : 5V/div, DC OUT1-OUT2 : 10mV/div, AC 3pin : 200mV/div, DC 200ms/div 200ms/div 3pin : 200mV/div, DC 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 August, 2007. Specifications and information herein are subject to change without notice. PS No.A0739-11/11 |
Price & Availability of LV4991TT
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