NJU8719

NJU8719 www.DataSheet4U.com PRELIMINARY Monaural BTL Output Switching Driver for Class D Amplifier ! GENERAL DESCRIPTION The NJU8719 is a monaural BTL output switching driver for class D amplifier. It converts 1bit digital signal input, such as PWM or PDM signal, to analog signal output with simple external LC low-pass filter. The NJU8719 realizes very high power-efficiency by class D operation. Therefore, It is suitable for portable set with speaker. NJU8719V ! PACKAGE OUTLINE ! FEATURES # # # # # # 1-channel 1bit Audio Signal Input Monaural BTL Output Standby(Hi-Z) Control Function Operating Voltage : 2.4V to 5.25V CMOS Technology Package Outline : SSOP10 ! PIN CONFIGURATION VDD IN NC MCK STBYB 1 2 3 4 5 10 9 8 7 6 VSS OUTP VDDO OUTN VSS ! BLOCK DIAGRAM VDD VDDO VSS IN Dead Time Generator MCK OUTP OUTN STBYB VSS Ver.2004-05-20 -1- NJU8719 www.DataSheet4U.com ! TERMINAL DESCRIPTION No. 1 2 3 4 SYMBOL VDD IN NC MCK I/O − I − I Function Power Supply, VDD=5V 1-bit Data Input Terminal Non connection Master Clock Input Terminal The condition of the data input terminal is fetched with the rising edge of this signal. Standby Control Terminal (L:Standby) 5 STBYB I 6 Power GND and Output GND terminal: VSS=0V VSS − 10 7 OUTN O Negative output 8 VDDO − Output Power Supply, VDD=5V 9 OUTP O Positive output *VSS(Terminal No.6,10) should be connected at a nearest point to the IC. *VDD(Terminal No.1) and VDDO(Terminal No.8) should be connected at a nearest point to the IC...