NJM2769B HEADPHONE AMPLIFIER for CD-ROM ! ! GENERAL DESCRIPTION The NJM2769B is a headphone amplifier designed for CDROM. It includes 6dB closed loop gain and mute circuit, requires few external component. The NJM2769B realizes very low turn-noise at mute mode. It is suitable for CD-ROM, and other general audio headphone amplifier application. ! PACKAGE OUTLINE NJM2769BM (DMP8) NJM2769BRB1 MSOP8(TVSP8) FEATURES ! ! ! ! ! ! ! Operating Voltage Operating Current Fixed Gain Stereo Headphone Output Internal Mute Circuit Bipolar Technology Package Outline 2.8 to 5.5V + 2mA typ. at V =5V 6dB typ. DMP8 MSOP8(TVSP8)* *MEET JEDEC MO-187-DA / THIN TYPE ! ! PIN CONFIGURATION 1 8 2 7 3 6 4 5 PIN FUNCTION 1.OUT1 2.MUTE 3.IN1 4.GND 5.IN2 6.BIAS 7.OUT2 + 8.V BLOCK DIAGRAM 8 7 6 5 BIAS MUTE 1 2 3 4 -1- NJM2769B ! ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL RATINGS + Supply Voltage V Power Dissipation PD Operating Temperature Range Topr Storage Temperature Range Tstg +7 (DMP8) 375 750 (note) (MSOP8(TVSP8))320 -40 to +85 -50 to +150 UNIT V mW C C (note) At on PC board ! ELECTRICAL CHARACTERISTICS (V+=5.0V,Vin=-6dBV,f=1kHz,RL=32,Ta=25C unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT 2.8 5.0 5.5 V + Operating Voltage V Operating Current ICC No Signal - 2.0 4.0 mA Reference Voltage Vref No Signal - 2.1 - V Closed Loop Gain GV 5 6 7 dB Channel Balance GV -0.5 0 +0.5 dB Output Power PO1 RL=32, THD=0.1% 30 50 - mW PO2 RL=16, THD=0.1% 40 100 - mW - 0.02 0.1 % Total Harmonic Distortion THD Output Noise Voltage Vno Rg=0, A-Weighted - -98 (12.6) Mute Attenuation ATT Vo/Vin - -80 -70 dB Channel Separation CS 65 80 - dB Ripple Rejection Ratio RR - 65 - dB Input Voltage H-level VIH 2.0 - V + V Input Voltage L-level VIL 0.0 - 0.3 V ! Vripple=-20dBV, Rg=0 dBV -88 (39.8) (Vrms) CONTROL PIN INFORMATION PARAMETER CONTROL SIGNAL OPERATING CONDITION MUTE ON L NON-SIGNAL MUTE OFF H OUTPUT SIGNAL -2- NJM2769B ! TERMINAL DESCRIPTION PIN NO. SYMBOL FUNCTION 1 7 OUT1 OUT2 OUTPUT1 OUTPUT2 EQUIVALENT CIRCUIT FB TERMINAL VOLTAGE + (V -1VBE)/2 10uA 2 MUTE MUTE CONTROL 350k 50k 3 5 IN1 IN2 INPUT1 INPUT2 + (V -1VBE)/2 50k BIAS 50k 6 BIAS REFERENCE VOLTAGE STABILIIZED CAPACITOR CONNECT TERMINAL + (V -1VBE)/2 50k -3- NJM2769B ! TYPICAL APPLICATION 100F 47F 16/32 SPEAKER BIAS OUT2 + V 8 + 2 1 16/32 SPEAKER mute 1 2 OUT1 H: SPEAKER Active V BIAS 100F MUTE IN2 5 6 7 100k 4 3 MUTE IN1 GND 1 F 1F L: SPEAKER Mute -4- NJM2769B ! TYPICAL CHARACTERISTICS Oprating Current vs. Operating Voltage Operating Current vs. Ambient Temperature 4 3.5 3.5 Operating Current (mA) Operating Current (mA) (MUTE=V+) 4 3 2.5 2 1.5 1 0.5 3 V+=5V 2.5 2 V+=2.8V 1.5 1 0.5 0 0 0 1 2 3 4 5 -40 -20 6 80 100 120 Reference Voltage vs. Ambient Temperature 3 3 2.5 2.5 Reference Voltage (V) Reference Voltage (V) Reference Voltage vs. Operating Voltage 2 1.5 1 0.5 V+=5V 2 1.5 V+=2.8V 1 0.5 0 0 0 1 2 3 4 5 -40 -20 6 20 40 60 80 100 120 Ambient Temperature ( C) Power Dissipation Dissipation vs.Output vs. Output Power Power Power Power Output Power Power Dissipation Dissipationvs. vs.Output Power (V+=5V,f=1KHz) (V+=5V,f=1KHz) (V+=2.8V,f=1KHz) (V+=2.8V,f=1KHz) 120 350 350 Power Power Dissipation Dissipation (mW) (mW) 400 400 RL=16 300 300 RL=16 250 250 200 200 RL=32 RL=32 150 150 100 100 THD=10% THD=10% 50 50 00 0 o Operating Voltage (V) Power Power Dissipation Dissipation (mW) (mW) 20 40 60 Ambient Temperature (oC) Operating Voltage (V) 00 0 20 20 40 40 60 60 80 80 100 100 Output Power Power (mW) (mW) Output 120 120 RL=16 100 80 RL=16 60 60 RL=32 40 40 RL=32 THD=10% THD=10% 20 20 0 0 00 55 10 10 15 15 20 20 25 25 Output Output Power Power (mW) (mW) -5- NJM2769B THD+N vs. Output Power THD+N vs. Output Power (V+=5V,f=1KHz,RL=16) 10 10 1 1 THD+N (%) THD+N (%) (V+=5V,f=1KHz,RL=32) o Ta=85 C Ta=25 oC 0.1 Ta=85 oC Ta=25 C Ta=-40 oC o 0.1 o Ta=-40 C 0.01 0.01 1 10 100 1 Output Power (mW) THD+N vs. Output Power THD+N vs. Output Power 10 10 1 1 Ta=85 oC o Ta=-40 C THD+N (%) THD+N (%) 100 (V+=2.8V,f=1KHz,RL=16) (V+=2.8V,f=1KHz,RL=32) 0.1 Ta=85 oC Ta=-40 oC 0.1 Ta=25 oC Ta=25 oC 0.01 0.01 1 10 100 1 Output Power (mW) 10 100 Output Power (mW) Mute Level vs. Frequency Output Noise Voltage vs. Ambient Temperature (RL=32,A-Weigthed) (V+=5V,Vin=-6dBV,RL=32) -50 -90 -60 V+ =5V -95 V+=2.8V -100 -105 Mute Level (dB) Output Noise Voltage (dBV) 10 Output Power (mW) -70 o Ta=-40 C -80 -90 Ta=25 oC Ta=85 oC -110 -40 -20 0 20 40 60 80 100 120 o Ambient Temperature ( C) -100 10 100 1K 10K Frequency (Hz) -6- NJM2769B Channel Separation vs. Frequency Ripple Rejection Ratio vs. Frequency (V+=5V,f=1KHz,RL=32) (Vripple=-20dBV,RL=32) 100 110 Ripple Rejection Ratio (dB) Channel Separation (dB) 120 100 90 80 70 60 50 40 10 100 1K 80 V+=5V 60 V+=2.8V 40 20 0 0.01 10K Frequency (Hz) 0.1 1 10 Frequency (Hz) Voltage Gain vs Mute Control Voltage (V+=5V,f=1KHz,Vin=-6dBV) 20 Voltage Gain (dB) 0 Ta=85 oC -20 -40 Ta=25oC -60 Ta=-40 oC -80 -100 0 0.5 1 1.5 MUTE Covtrol Voltage (V) [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. -7-