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NJU7085

JRC
Part Number NJU7085
Manufacturer JRC
Description High-Power & Low-Voltage Stereo Audio Power Amplifier
Published Jun 13, 2009
Detailed Description NJU7085 High-Power & Low-Voltage Stereo Audio Power Amplifier with 3D Surround ■GENERAL DESCRIPTION The NJU7085 is a s...
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NJU7085
NJU7085

Overview
NJU7085 High-Power & Low-Voltage Stereo Audio Power Amplifier with 3D Surround ■GENERAL DESCRIPTION The NJU7085 is a stereo audio power amplifier with surround sound technology for portable applications.
No external coupling capacitors are required because of the differential outputs.
The closed loop gain is adjusted by two external resistors.
And the standby mode control reduces the supply current.
The NJU7085 contains pop & click noise protection circuitry which eliminates noises during turn-on and turn-off transitions and RF rectification canceling circuitry.
■ PACKAGE OUTLINE NJU7085SF7 ■ APPLICATION • Portable DVD/TV • Cradle Speaker • Mobile-phone/PHS NJU7085V ■FEATURES • Operating Voltage V+=2.
8 to 5.
5V • Operating Current IDD1=4.
6 mA typ.
• Supply Current in Power Down Mode IDD4=2µA max.
• Output Power Po=400mW/ch typ.
• Low Output Noise 25µVrms typ.
• Variable Surround Effect by external resistor • Standby function • Mute Function • C-MOS Technology • Package Outline PCSP32F7,SSOP32 (Mobile mode) (Standby mode) (V+=3V,RL=4Ω) ■ BLOCK DIAGRAM PS NFLO NFLI NFRI ROUT eala RINP ROUTRIN eala Processor Block LIN Bias Block V+ Control Block ROUT+ LOUT+ LOUT- GND Vref ealaTC DNC D2 D1 D0 LOUT eala LINP -1- NJU7085 ■ PIN CONFIGURATION (SSOP32) 1 D2 2 D1 3 D0 4 NC 5 GND 6 LOUT+ 7 V+ 8 V+ 9 LOUT10 GND 11 NC 12 LINP 13 LOUTeala 14 PS 15 NFLO 16 NFLI ealaTC 32 DNC 31 VREF 30 NC 29 GND 28 ROUT+ 27 V+ 26 V+ 25 ROUT- 24 GND 23 NC 22 RINP 21 ROUTeala 20 NFRI 19 RIN 186 LIN 17 No.
Symbol Function 1 D2 Mode Control Switch 2 2 D1 Mode Control Switch 1 3 D0 Mode Control Switch 0 4 NC - 5 GND GND 6 LOUT+ Lch+ Output 7 V+ Power Supply 8 V+ Power Supply 9 LOUT- Lch- Output 10 GND GND 11 NC - 12 LINP Power Amp Lch Input 13 LOUTeala eala Processor Lch output 14 PS Filter 15 NFLO Filter 16 NFLI Filter No.
Symbol Function 17 LIN Lch Input 18 RIN Rch Input 19 NFRI Filter 20 ROUTeala eala processor Rch Output ...


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