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NJU8713 Datasheet Preview

NJU8713 Datasheet

PWM/PDM

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NJU8713
2V Operation Switching Driver for Class D Amplifier
GENERAL DESCRIPTION
The NJU8713 is a Switching Driver for a class D
Amplifier including Separated Power Source terminals
between Input and Output, BEEP and BPZ (Bipolar Zero)
output circuits. It converts 1bit digital signal input, such
as PWM or PDM signal, to an analog signal output through
a simple external LC low-pass filter.
The NJU8713 realizes very high power-efficiency
because of the class D operation. Therefore, it is suitable
for portable audio set and others.
PACKAGE OUTLINE
NJU8713V
FEATURES
2-channel 1bit Audio Signal Input
Standby(Hi-Z), BPZ Control
Internal BPZ Charger
Beep Function
Operating Voltage
: 1.7V to 2.7V
Driving Voltage
CMOS Technology
: 1.7V to VDD
Package Outline
: SSOP14
PIN CONFIGURATION
MCK
VSS
IN1
EN1
VSSO
OUT1
VDDO
1
2
3
4
5
6
7
14
13
12
11
10
9
8
BEEP
VDD
IN2
EN2
VSSO
OUT2
VDDO
BLOCK DIAGRAM
VDD VSS
IN1
BEEP
BPZ Output
IN2
Output Control
MCK EN1 EN2
BPZ Output
VDDO VSSO
OUT1
OUT2
Ver.2004-06-02
-1-



JRC
JRC

NJU8713 Datasheet Preview

NJU8713 Datasheet

PWM/PDM

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NJU8713 pdf
NJU8713
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TERMINAL DESCRIPTION
No.
SYMBOL
I/O
Function
13 VDD - Operation Power Supply, VDD=2V
2 VSS - Operation Power GND, VSS=0V
7
8
VDDO
Driving Power Supply, VDDO=2V
- Terminal No.7 and No.8 should be connected to the same electric
potential.
5
10
VSSO
Driving Power GND, VSSO=0V
- Terminal No.5 and No.10 should be connected to the same electric
potential.
Master Clock Input Terminal
1
MCK
I The condition of the data input terminal is fetched with the rising
edge of this signal.
4
11
EN1
EN2
I
Output Control Terminal
Output circuit is selected by the condition of this terminal.
3
12
IN1
IN2
I
Audio Signal Input Terminal
1-bit Audio Signal inputs into this terminal.
14
BEEP
I
Beep Signal Input Terminal
Beep signal inputs into this terminal.
Output Terminal
When Output Terminal selects Audio Signal, IN1 terminal input data
6
9
OUT1
OUT2
O
outputs from OUT1 terminal and IN2 terminal input data outputs from
OUT2 terminal.
When Output Terminal selects Beep Signal, BEEP terminal input
data outputs from OUT1 and OUT2 terminals.
INPUT TERMINAL STRUCTURE
VDD
Input Terminal
VSS
Inside Circuit
-2-
Ver.2004-06-02


Part Number NJU8713
Description PWM/PDM
Maker JRC
Total Page 8 Pages
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