NJM2769B

www.DataSheet4U.com 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 NJM2769BRB1 ! 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,TVSP8 ! PIN CONFIGURATION PIN FUNCTION 1.OUT1 2.MUTE 3.IN1 4.GND 5.IN2 6.BIAS 7.OUT2 + 8.V 1 2 3 4 8 7 6 5 ! BLOCK DIAGRAM 8 7 6 BIAS 5 MUTE 1 2 3 4 -1- www.DataSheet4U.com NJM2769B ! ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range (note) At on PC board SYMBOL V + RATINGS +7 (DMP8) 375 750 (note) (TVSP8)320 -40 to +85 -50 to +150 UNIT V mW °C °C PD Topr Tstg ! ELECTRICAL CHARACTERISTICS (V+=5.0V,Vin=-6dBV,f=1kHz,RL=32Ω,Ta=25°C unless otherwise specified) PARAMETER SYMBOL V + TEST CONDITIONS MIN. 2.8 TYP. 5.0 2.0 2.1 6 0 50 100 0.02 -98 (12.6) -80 80 65 - MAX. 5.5 4.0 7 +0.5 0.1 UNIT V mA V dB dB mW mW % Operating Voltage Operating Current Reference Voltage Closed Loop Gain Channel Balance Output Power ICC Vref GV ∆G V PO1 PO2 No Signal No Signal 5 -0.5 RL=3...