NJM2149 LOW VOLTAGE AUDIO POWER AMPLIFIER GENERAL DESCRPTION PACKAGE OUTLENE The NJM2149 is an audio power amplifier designed for telephone applications. No external coupling capacitors are required because of the differential outputs. The closed loop gain is adjusted by two external resistors, and a CD pin permit powering down with muting the input signal. The NJM2149 improves the tern noise reduction in NJM2149D NJM2149M switching Power Down mode and external high band noise reduction, compared with NJM2135. It is suitable for portable telephone , wireless telephone, button telephone, and other speaker NJM2149V NJM2149R amplifier applications. NJM2149RB1 FEATURES Operating Voltage +2 - +6V + Operating Current 2.2mA typ., at V =3V Supply Current in Power Down Mode 0.1 A typ + Output Power Exceeds250mW V =6V,R =32 L Gain Range GVD=0-43dB,Voise Band Load Impedance R =8-200 L Bipolar Technology Package Outline DIP8,DMP8,SSOP8,VSP8,TVSP8 PIN CONFIGURATION + V PIN FUNCTION 6 1.CD 2.+V REF 3.+V IN 4.-V BIAS 1 CD IN 5.V 1 OUT + -V IN 6.V 4 A 5 V 1 7.GND OUT +V 3 IN 8.V 2 OUT 20k 20k 50k V 2 B 8 OUT +V 2 REF 145k 50k 7 GND -1 - NJM2149 ABSOLUTE MAXMUM RANGE (Ta=25C) PARAMETER SYMBOL RATINGS UNIT + Supply Voltage V +7 V (DIP8) 500 (DMP8) 500 (note1) Power Dissipation P mW D (SSOP8) 360 (note1) (VSP8/TVSP8) 320 Operating Temperature Range Topr -40 to +85 C Storage Temperature Range Tstg -40 to +125 C (note1)Mounted on PC Board + ELECTRICAL CHARACTERISTICS (V =6.0V, 1pin=2V, Ta=25C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN. TYP.MAX.UNIT + Operating Voltage V 2.0 - 6.0 V + Operating Current I - 2.2 3.5 mA V =3.0V, R =, No Signal CC L + Operating Current I V =3.0V, R =, 1pin=0.8V, No Signal - 0.1 1.0 A CCD L at Power Down Mode Open Loop Gain A 1 Amp A, f<100Hz 84 90 - dB V Closed Loop Gain A 2 -0.35 0 +0.35 dB Amp B, f=1kHz, R =32 V L + Output Power P 1 55 - - mW O V =3.0V, R =16 , THD10% (note2) L + P 2 250 - - mW V =6.0V, R =32 , THD10% (note2) O L + Total Harmonic THD1 - 0.5 1.0 % V =6V, R =32 , P =125mW, L O Distortion f =1kHz, G =34dB VD + THD2 - 0.5 - % V 3V, R =8 , P =20mW, L O f=1kHz, G =12dB VD Power Supply SVR1 50 - - dB C1=, C2=0.01 F, DC Rejection Ratio SVR2 - 12 - dB C1=0.1 F, C2=0, f=1kHz + (V=3.0V-6.0V) SVR3 C1=1.0 F, C2=5.0 F, f=1kHz - 47 - dB Mute Attenuation MAT f =1kHz-20kHz, 1pin=0.8V - 70 - dB + Output Voltage V 1 1.00 1.15 1.25 V V =3.0V, R =16 O L + (R =75k , DC) V2 V=6.0V - 2.60 - V O f + + Output High Level V I =-75mA, V=2.0-6.0V - V-1.1 - V OH OUT + Output Low Level V I =75mA, V=2.0-6.0V -30 0.21 - V OL OUT Output DC Offset -30 0 +30 mV V R =75k , R =32 , 5pin-8pin O f L Input Bias Current I4pin - 0 -200 nA B Equivalent Resistance R3pin 100 170 220 k +IN R2pin 18 26 40 REF k + CD Input Voltage H V1pin 2.0 - V V CDH CD Input Voltage L V1pin 0.0 - 0.8 V CDL + CD Input Resistance R V =V =6.0V, 1pin 50 85 175 k CD CD (note2) NJM2149M,NJM2149V,NJM2149R,NJM2149RB1:Mounted on PC Board CONTROL TERMINAL EXPLANATION CHIP DISABLE CONTROL(CD PIN) PARAMETER CONTROL SIGNAL STATUS CD OFF H(=V ) IC is active. CDH CD ON L(=V ) IC is standby. (with Mute) CDL - 2 -