NJU8761 PDF даташит
Спецификация NJU8761 изготовлена «JRC» и имеет функцию, называемую «Analog». |
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Детали детали
Номер произв | NJU8761 |
Описание | Analog |
Производители | JRC |
логотип |
7 Pages
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NJU8761
www.DataSheet4U.com
PRELIMINARY
Analog Signal Input Monaural Class-D Power Amplifier
for Piezo Speaker
GENERAL DESCRIPTION
The NJU8761 is an analog signal input monaural
class-D amplifier for Piezo speaker.
The NJU8761 incorporates BTL amplifiers, which
eliminate AC coupling capacitor. The input block
operates on 2.6V(Min.) as power supply and the
output block operates up to 12V, therefore it can output
close to 17.5VP-P amplified signal and drive Piezo
speaker with louder sound and high efficiency.
Class-D operation achieves lower power operation
for Piezo speaker, thus the NJU8761 is suited for
battery-powered applications such as cellular phone
and PDA.
PACKAGE OUTLINE
NJU8761KM1
FEATURES
Piezo Speaker Driving
Output voltage 6.2 Vrms (Typ.) @VDDO=10 V, THD+N=10%
Analog input, Monaural BTL output
Standby(Hi-Z), Mute control
Built-in Low Voltage Detector for VDD & VDDO
Operating Voltage Input Block: 2.6~3.6V(VDD)
Output Block: 8.0~12.0V(VDDO)
CMOS Technology
Package Outline QFN20-M1
PIN CONFIGURATION
20
1
BOOST
NFIN
IN
VSS
COM
5
6
16
15
NC
TEST
TEST
TEST
STBYB
11
10
Ver.2006-06-19
-1-
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NJU8761
www.DataSheet4U.com
BLOCK DIAGRAM
BOOST
NFIN
IN
COM
- Pulse
+ Width
-
+
Modulator
×2.8
Control Logic
OSC
Low Voltage
Detector
VDDO
OUTP
VSS
VDDO
OUTN
VSS
-2-
Ver.2006-06-19
No Preview Available ! |
www.DataSheet4U.com
NJU38575651
PIN DESCRIPTION
No.
1
2
3
4,9,18
5
6
7
8
10
SYMBOL
BOOST
NFIN
IN
VSS
COM
VDD
ROSC
COSC
MUTEB
11 STBYB
12,13,14
15
16,20
17
19
TEST
NC
VDDO
OUTP
OUTN
I/O Function
I/O Input capacitor charge terminal
I/O Input amplifier gain setting terminal
I Signal input terminal
- Power GND: VSS=0V
- Analog common
- Power Supply
I Resistor connection terminal for oscillator
I Capacitor connection terminal for oscillator
I
Mute Control
H: Normal operation, L: Mute ON
I
Standby Control
H: Normal operation, L: Standby ON
I
Maker test terminal
L: Normal operation
- Non connection
- Output Power Supply: VDDO=MAX.12V
O Positive signal output terminal
O Negative signal output terminal
Note 1) Pin No. 4,9,18(VSS) should be connected at the nearest point of the IC on the PCB.
Note 2) Pin No.16, 20(VDDO) should be connected at the nearest point of the IC on the PCB.
Ver.2006-04-04
-3-
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Номер в каталоге | Описание | Производители |
NJU8761 | Analog | JRC |
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