NJM2135 LOW VOLTAGE AUDIO POWER AMPLIFIER GENERAL DESCRIPTION The NJM2135 is a Low voltage audio power amplifier for speaker drivers. No external coupling capacitors are required because of the differential output. The closed loop gain is adjusted by two external resistors. The low supply current in power down mode contributes to the reduction of power consumption of portable battery powered equipment, cellular phones, for example. PACKAGE OUTLINE FEATURES Operating Voltage ( +2V ~ +16V ) Low Operating Current in Power Down Mode ( 0.1A typ. ) Low Operating Current in Normal Operation Mode ( 2.7mA typ. ) Output Power Exceeds 250mW ( V+=6V,RL=32 ) Gain Range ( GVD=0~43dB,Voice Band ) Load Impedance ( 8~200 ) Bipolar Technology Package Outline DIP8, DMP8, SIP8, SSOP8 MSOP8 (VSP8)* NJM2135D NJM2135M ( DIP8 ) ( DMP8 ) NJM2135L ( SIP8 ) NJM2135V ( SSOP8 ) NJM2135R ( MSOP8 (VSP8) ) *MEET JEDEC MO-187-DA PIN CONFIGURATION PIN FUNCTION 1. CD 2. VREF1 3. VREF2 4. -VIN 5. VOUT1 + 6. V 7. GND 8. VOUT2 NJM2135D NJM2135M NJM2135V NJM2135R NJM2135L Ver.2012-07-30 -1- NJM2135 ABSOLUTE MAXIMUM RATINGS ( Ta=25C ) PARAMETER Supply Voltage Output Peak Current Maximum Input Voltage SYMBOL + V IOP VIN ( 1-4pin ) VIN ( 5-8pin ) Power Dissipation PD Operating Temperature Range Storage Temperature Range Topr Tstg RATINGS +18 250 + -0.3,V +0.3 + -0.3,V +0.3 ( In power down ) ( DIP8 ) 500 ( SIP8 ) 800 ( DMP8 ) 500 ( note1 ) ( SSOP8 ) 360 ( note1 ) MSOP8(VSP8) 320 -20~+75 -40~+125 UNIT V mA V V mW C C ( note1 ) Mounted on PC Board ELECTRICAL CHARACTERISTICS ( V+=6.0V,Ta=25C unless otherwise specified ) PARAMETER Operating Current ( NO SIGNAL ) ( At Power Down Mode ) Open Loop Gain Closed Loop Gain Output Power ( note2 ) Total Harmonic Distortion ( f=1kHz ) Power Supply Rejection Ratio + + ( V =6.0V,V =3.0V ) Mute Attenuation Output Voltage ( Rf=75k,DC ) Output High Level Output Low Level Output DC Offset Input Bias Current Equivalent Resistance CD Input Voltage H CD Input Voltage L CD Input Resistance SYMBOL ICC1 ICC2 ICCD AV1 AV2 PO1 PO2 PO3 THD1 THD2 THD3 PSRR1 PSRR2 PSRR3 MAT VO1 VO2 VO3 VOH VOL VO IB R+IN RREF VCDH VCDL RCD TEST CONDITIONS + V =3.0V,RL=,1pin=2.0V + V =16.0V,RL=,1pin=2.0V + V =3.0V,RL=,1pin=0.8V AMP#A,f<100Hz AMP#B,f=1kHz,RL=32 + V =3.0V,RL=16,THD10% + V =6.0V,RL=32,THD10% + V =12.0V,RL=100,THD10% ( note3 ) + V =6V,RL=32,PO=125mW,GVD=34dB + V 3V,RL=8,PO=20mW,GVD=12dB + V 12V,RL=32,PO=200mW,GVD=34dB C1=,C2=0.01F,DC C1=0.1F,C2=0,f=1kHz C1=1.0F,C2=5.0F,f=1kHz f=1kHz~20kHz,1pin=2.0V + V =3.0V,RL=16 + V =6.0V + V =12.0V + IOUT=-75mA,V =2.0~16.0V + IOUT=75mA,V =2.0~16.0V Rf=75k,RL=32,5pin~8pin 4pin 3pin 2pin 1pin 1pin + V =VCD=16.0V,1pin MIN. 77 -0.35 55 250 400 50 1.00 -30 100 18 2.0 0.0 50 TYP. 2.7 3.4 0.1 83 0.5 0.5 0.6 12 52 70 1.15 2.55 5.45 + V -1.1 0.21 0 -30 150 25 90 MAX. 4.0 5.0 1.0 +0.35 1.0 1.25 +30 -200 220 40 + V 0.8 175 UNIT mA mA A dB dB mW mW mW % % % dB dB dB dB V V V V V mV nA k k V V k ( note2 ) NJM2135M,NJM2135V,NJM2135R : Mounted on PC Board ( note3 ) NJM2135V,NJM2135R is excluded -2- Ver.2012-07-30 NJM2135 APPLICATION CIRCUIT ( note ) 1. The NJM2135 is active mode during the CD terminal is High level ( >2.0V ) and it is stand-by mode during the CD terminal is Low level ( <0.8V ). 2. C1 and C2 improve power supply rejection ratio. In case of C1 is enough large,C2 is unnecessary. 3. Please note that the C1 and C2 make slow power rise up to the NJM2135 regardless the external power supply condition. 4. Input current flow on the internal resistor shown in the equivalent circuit of CD terminal. 5. No snubber resistor and capacitor are required normally. But the snubber resistor and capacitor are required if the NJM2135 oscillates by condition of PCB layout,stray capacitor and speaker wire length. 6. When the NJM2135 change the mode to active or stand-by the CD terminal ON/OFF,the actual operation takes some delay by the charge and discharge of C1,C2. 7. When the power turns on in stand-by mode,the NJM2135 operates during charging time of C1 and C2. 8. If the supply voltage fluctuate large during the stand-by mode,the mode of active and stand-by of NJM2135 becomes unstable. Ver.2012-07-30 -3- NJM2135 POWER DISSIPATION The allowable power is restricted by the ambient temperature. Characteristics of the allowable power ( PD : Power Dissipation ) against ambient temperature is indicated below. [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -4- Ver.2012-07-30