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NJU8714

JRC
Part Number NJU8714
Manufacturer JRC
Description STEREO BTL OUTPUTS SWITCHING DRIVER
Published Jun 12, 2009
Detailed Description NJU8714 NJU3555 www.DataSheet4U.com STEREO BTL OUTPUTS SWITCHING DRIVER FOR Class D AMPLIFIER GENERAL DESCRIPTION The N...
Datasheet PDF File NJU8714 PDF File

NJU8714
NJU8714

Overview
NJU8714 NJU3555 www.
DataSheet4U.
com STEREO BTL OUTPUTS SWITCHING DRIVER FOR Class D AMPLIFIER GENERAL DESCRIPTION The NJU8714 is a stereo BTL outputs switching driver for class D amplifier.
It receives PWM/PDM signals from DSP outputs, and drives headphones or speakers by BTL outputs.
Output drivers are composed of Series-Connected N-channel FETs, and output voltage levels can be controlled by variable power supply with keeping all of input signal information.
The NJU8714 incorporates BTL outputs amplifiers, which eliminate AC coupling capacitors.
Also, it provides “SEL” terminal which selects “Synchronous” or “Asynchronous”.
“Asynchronous” can be reduced the operating current.
Therefore, it is suitable for portable audio set and others.
PACKAGE OUTLINE NJU8714VB2 FEATURES 2-channel 1bit Audio Signal Input Stereo BTL Outputs Output Power : Typ.
150mW@8Ω BEEP Function Standby Function Output Driver Control Function Operating Voltage VDD: 1.
7V to 2.
7V VDDO: 0V to 2.
0V VG: 4.
5V to 5.
25V CMOS Technology Package Outline :SSOP20-B2 PIN CONFIGURATION MCK VSS HALTB DIN1 BEEPIN OBEEP1 OUT1 VSSO OUT1X VDDO1 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD SEL STBYB DIN2 VG OBEEP2 OUT2 VSSO OUT2X VDDO2 BLOCK DIAGRAM VDD VSS VG VDDO1 DIN1 Level Shifter OUT1 Control Logic Pre Driver OUT1X VSSO VDDO2 DIN2 MCK STBYB HALTB SEL BEEPIN OBEEP2 Level Shifter Level Shifter Level Shifter Level Shifter Level Shifter OUT2 Control Logic Pre Driver OUT2X VSSO OBEEP1 Ver.
2004-05-21 -1- NJU8714 www.
DataSheet4U.
com TERMINAL DESCRIPTION FUNCTION Master Clock Input Terminal Power GND: VSS=0V (Note.
1) Output Driver Control Terminal 1bit Data Input Terminal 1 BEEP Signal Input Terminal BEEP Output terminal 1 Positive Output Terminal 1 Output GND terminal: VSS=0V (Note.
1) Negative Output 1 Output Power supply 1(Note.
2) Output Power supply 2(Note.
2) Negative Output 2 Positive Output Terminal 2 BEEP Output terminal 2 Pre-driver Power supply 1bit Data Input Terminal 2 Standby c...


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