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NJU8719

JRC
Part Number NJU8719
Manufacturer JRC
Description Monaural BTL Output Switching Driver
Published Jun 12, 2009
Detailed Description NJU8719 www.DataSheet4U.com PRELIMINARY Monaural BTL Output Switching Driver for Class D Amplifier ! GENERAL DESCRIPTI...
Datasheet PDF File NJU8719 PDF File

NJU8719
NJU8719

Overview
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.
*STBYB(Terminal No.
5) must be connected to VDD, when this terminal is not used.
! INPUT TERMINAL STRUCTURE VDD Input Terminal VSS -2 2- Ver.
2004-05-20 NJU8719 NJU3555 www.
DataSheet4U.
com ! FUNCTIONAL DESCRIPTION (1) Signal Output The OUTP and OUTN generate PMW output signal, which is converted to analog signal via external 2nd-order or higher LC filter.
The NJU8719 drives a speaker by the BTL output, and OUTP is a positive output and OUTN is a negative outputs.
A switching regulator with...


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