NJU7086 データシートの表示（PDF） - Japan Radio Corporation

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NJU7086

High-Power & Low-Voltage Stereo Audio Power Amplifier with Electronic Volume

Japan Radio Corporation  

NJU7086

High-Power & Low-Voltage Stereo Audio Power Amplifier

with Electronic Volume

■GENERAL DESCRIPTION

The NJU7086 is a stereo audio power amplifier designed

for portable applications. Three input selector and an

electronic volume are built into, and it contributes to a

reduction of the number of external parts. 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 NJU7086 contains pop & click noise protection

circuitry which eliminates noises during turn-on and turn-off

transitions and RF rectification canceling circuitry.

■ PACKAGE OUTLINE

NJU7086

■ APPLICATION

• Portable DVD/TV

• Portable Navigation

• PC Monitor

■FEATURES

• Operating Voltage

V+=2.8 to 5.5V

• Three Input Selector

• Electronic Volume

0dB~-64dB

• Operating Current

• Supply Current in Power Down Mode

• Output Power

• Standby function

IDD1=8 mA typ.

IDD4=5µA max.

Po=1W/ch typ.

• Mute Function

• Headphone detecting function

• Switch function of Differential output and Single ended output

• C-MOS Technology

• Package Outline

LQFP48

(V+=5V,BTL mode,RL=∞,No Signal)

(STBY mode)

(V+=5V,RL=8Ω,THD=2%)

■ BLOCK DIAGRAM

EVROutL GainL GND VDD

INL1

INL2

INL3

INR1

INR2

INR3

Vrefin

Bias

OutL+

EVR

HP

Sense

EVR

I2C Interface

OutL-

OutR-

Lch SP

HP Sense

HP Jack

stereo

Rch SP

OutR+

EVROutR GainR GND VDD

19-May-09

-1-

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