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PDF NJM2770 Data sheet ( Hoja de datos )

Número de pieza NJM2770
Descripción Audio Amplifier / TVSP8 / VSP8
Fabricantes JRC 
Logotipo JRC Logotipo



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No Preview Available ! NJM2770 Hoja de datos, Descripción, Manual

NJM2770
www.DataSheet4U.com
HIGH-POWER & LOW-VOLTAGE AUDIO POWER AMPLIFIER
s GENERAL DESCRIPTION
The NJM2770 is high-power and low-voltage audio
power amplifier with standby function. No external
coupling capacitors required because of the differential
output type. Two external resistors adjust the closed
loop gain. The output power is 250mW typical at
3V-supply 8ohm-load, and 400mW typical at 4.5v-supply
16ohm-load. The standby current is only 0.1µA typical.
The package of NJM2770 is VSP8, and suitable for
PCS, codeless telephone, speaker amplifier for hands
free system, and especially cellular phone because of
low operating current, low standby current, and high
power output.
s PACKAGE OUTLINE
NJM2770R NJM2770RB1
s FEATURS
qOperating Voltage
qOperating Current
+2-+4.5V
2.0mA typ.,at V+=3V
qLow Power-Down Current
0.1µA typ
qHigh Power Otput 250mW typ. at V+=3V,RL=8
400mW typ. V+=4.5V,RL=16
qGain Range at Voice Band
Gv=0-43dB
qLoad Impedance
RL=4-200
qThermal Shut Down Function
q Package Outline
VSP8,TVSP8
q Bipolar Technology
s PIN CONFIGURATION & BLOCK DIAGRAM
V+
6
-VIN 4
+VIN 3
+VREF 2
BIAS
#A
40k
50k
145k
40k
#B
50kTSD
7
GND
1 CD
5 VOUT1
8 VOUT2
Pin Function
1.CD
2.+VREF
3.+VIN
4.-VIN
5.VOUT1
6.V +
7.GND
8.VOUT2
-1-

1 page





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