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Details, datasheet, quote on part number:NJU8710R
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| Part: | NJU8710R |
| Category: | Multimedia => Audio => Drivers |
| Description: | 2V Operation Clock-less Switching Driver For Class D Amplifier <<<>>>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.<<<>>> 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 |
| Company: | NJR Corporation |
| Datasheet: | Download NJU8710R datasheet File size : 92 kB |
| Request For quote: | Find where to buy NJU8710R
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Datasheet text preview:
NJU8710
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
PIN CONFIGURATION
STBYB IN1 VSS OUTX1 VDDO 1 2 3 4 5 10 9 8 7 6 VDD IN2 VSS OUT X 2 VDDO
BLOCK DIAGRAM
VDD VDDO VSS
IN1 Dead Time Generator
OUT X 1
IN2
OUTX2
STBY
VDDO
VSS
Ver.2004-06-02
-1-
NJU8710
TERMINAL DESCRIPTION
No. 10 5 6 3 8 2 9 4 7 SYMBOL VDD VDDO VSS IN1 IN2 OUTX1 OUTX2 I/O - - - I O Function Power Supply: VDD=2V Output Power Supply: VDDO=2V Power GND and Output GND terminal: VSS=0V 1-bit Data Input Terminal
Output Terminal OUTX1 terminal outputs the inverted signal of IN1 terminal, OUTX2 terminal outputs the inverted signal of IN2 terminal. 1 STBYB I Standby Control Terminal (L:Standby) *VSS(Terminal No.3,8) should be connected at a nearest point to the IC. *VDDO(Terminal No.5,6) should be connected at a nearest point to the IC. *STBYB(Terminal No.1) must be connected to VDD, when this function is not used.
INPUT TERMINAL STRUCTURE
VDD
Input Terminal VSS
IC Circuit
FUNCTIONAL DESCRIPTION
(1) Signal Output (OUTX1, OUTX2 Terminal) Output signal becomes a inverted input signal. A flow-through current at the signal polarity transition doesn't generate by optimized dead time control circuit. Output signal is converted to analog signal via external 2nd-order or higher LC filter. A switching regulator with a high response against a voltage fluctuation is the best selection for the VDDO, which is the power supply for output drivers. To obtain better T.H.D. performance, the stabilization of the power is required.
(2) Standby Control Function By setting the STBYB terminal to "L", the NJU8710 becomes standby condition. OUTX1 and OUTX2 are in Hi-Z.
During standby condition,
-2-2-
Ver.2004-06-02
NJU8710 NJU3555
ABSOLUTE MAXIMUM RATINGS
PARAMETER Supply Voltage Input Voltage Operating Temperature Storage Temperature Power Dissipation VSP10 Power Supply Voltage Condition SYMBOL VDD VDDO Vin Topr Tstg PD RATING -0.3 to +4.0 -0.3 to +2.7 -0.3 to VDD+0.3 -40 to +85 -40 to +125 450* VDD VDDO (Ta=25°C) UNIT V V V °C °C mW V
* : Mounted on two-layer board of based on the JEDEC. Note 1) All voltage values are specified as VSS=0V. Note 2) If the LSI is used on condition beyond the absolute maximum rating, the LSI may be destroyed. Using LSI within electrical characteristics is strongly recommended for normal operation. Use beyond the electrical characteristics conditions will cause malfunction and poor reliability. Note 3) De-coupling capacitors should be connected between VDD-VSS and VDDO-VSS due to the stabilized operation.
ELECTRICAL CHARACTERISTICS
PARAMETER VDD Supply Voltage VDDO Supply Voltage Output Driver High side Resistance Output Driver Low side Resistance Operating Current at Hi-Z Output Operating Current at no input signal SYMBOL VDD VDDO RH VOUT=VDDO-0.1V (Ta=25°C, VDD=VDDO=2.0V, VSS=0.0V, unless otherwise noted) CONDITIONS MIN. TYP. MAX. UNIT 1.7 1.7 2.0 2.0 1.5 2.7 VDD 2 V V
RL IST IDD IDDO VIH
VOUT=0.1V IN1, IN2, STBYB="L" No-load operating, IN1=IN2=1.4MHz
0.7VDD 0 -
1.5 0.05 0.6
2 1 T.B.D T.B.D VDD
µA mA V V µA
Input Voltage VIL Input Leakage Current ILK 0.3VDD ±1
Ver.2004-06-02
-3-
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