NJU7086 Datasheet, PDF (1/17 Pages) New Japan Radio – High-Power & Low-Voltage Stereo Audio Power Amplifier with Electronic Volume

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
I_DD1=8 mA typ.
I_DD4=5µA max.
P_o=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,R_L=∞,No Signal)
(STBY mode)
(V⁺=5V,R_L=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
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