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PDF NJU8710 Data sheet ( Hoja de datos )
| Número de pieza | NJU8710 | |
| Descripción | PWM/PDM / VSP10 | |
| Fabricantes | JRC | |
| Logotipo |  |
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NJU8710
www.DataSheet4U.com
PRELIMINARY
2V Operation Clock-less Switching Driver for Class D Amplifier
GENERAL DESCRIPTION
The NJU8710 is a 2V operation clock-less switching
driver for a class D Amplifier with separated power supply
between Input and Output.
The NJU8710 provides powerful drivability in both of
sink and source without flow-through current. Therefore, it
can be used to the buffer or the switch as a driver IC.
Furthermore it converts 1bit digital signal input, such as
PWM or PDM signal, to analog signal output of the hi-fi
audio level through a simple external LC low-pass filter.
The NJU8710 realizes very high power-efficiency
because of the class D operation and low voltage
operation. Therefore, it is suitable for battery powered
applications and others.
PACKAGE OUTLINE
NJU8710R
FEATURES
2-channel 1bit Digital Signal Input
Standby(Hi-Z) Control function
Operating Voltage
: 1.7V to 2.7V
Driving Voltage
: 1.7V to VDD
CMOS Technology
Package Outline
: VSP10
BLOCK DIAGRAM
VDD
PIN CONFIGURATION
STBYB
IN1
VSS
OUTX1
VDDO
1
2
3
4
5
10
9
8
7
6
VDD
IN2
VSS
OUTX2
VDDO
VDDO VSS
IN1 OUTX1
IN2 OUTX2
STBY
VDDO VSS
Ver.2004-06-02
-1-
1 page  
www.DataSheet4U.com
NJU38575150
APPLICATION CIRCUIT (Analog Signal Output)
• Stereo OTL application example
• A914BY-101M is manufactured by TOKO, INC.
For further information, please refer to its
technical papers.
Audio Signal
2
IN1
9 IN2
OUTX1
220µF A914BY-101M
4
100µH
220µF A914BY-101M
OUTX2 7
100µH
32Ω
Headphone
Standby Control
1 STBYB
10µF
Logic Power
0.1µF 10
VDD
0.1µF
VDDO 5
VSS 3
0.1µF
VDDO 6
VSS 8
0.1µF 47µF Switching
Regulator
• Monaural BTL application example
Audio Signal
2 IN1
9 IN2
OUTX1 4
OUTX2 7
• A914BY-101M is manufactured by TOKO, INC.
For further information, please refer to its
technical papers.
A914BY-101M
100µH
100µH
32Ω
Speaker
A914BY-101M
Standby Control
1 STBYB
10µF
Logic Power
0.1µF 10
VDD
VDDO
VSS
0.1µF
5
3
VDDO
0.1µF
6
VSS 8
0.1µF 47µF Switching
Regulator
Note 4) De-coupling capacitors must be connected between each power supply terminal and GND terminal.
Note 5) The power supply for VDDO requires fast driving response performance such as a switching regulator for
T.H.D..
Note 6) The bigger capacitor value of external AC-coupling capacitors realize better low frequency response
characteristics. In addition, ESR(Equivalent Series Resistance) should be low.
Note 7) The above circuit shows only application example and does not guarantee the any electrical
characteristics. Therefore, please consider and check the circuit carefully to fit your application.
Ver.2004-06-02
-5-
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet NJU8710.PDF ] | |
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