NJM2770
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 0.1碌A(chǔ) 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
FEATURS
qOperating
Voltage
qOperating
Current
qLow
Power-Down Current
qHigh
Power Otput 250mW typ.
400mW typ.
qGain
Range at Voice Band
qLoad
Impedance
qThermal
Shut Down Function
q
Package Outline
q
Bipolar Technology
s
PACKAGE OUTLINE
NJM2770R
NJM2770RB1
+2-+4.5V
2.0mA typ.,at V
+
=3V
0.1碌A(chǔ) typ
at V
+
=3V,R
L
=8鈩?/div>
V
+
=4.5V,R
L
=16鈩?/div>
Gv=0-43dB
R
L
=4-200鈩?/div>
VSP8,TVSP8
s
PIN CONFIGURATION & BLOCK DIAGRAM
Pin Function
V
+
6
BIAS
-V
IN
4
+V
IN
3
#A
1
CD
5
V
OUT
1
1.CD
2.+V
REF
3.+V
IN
4.-V
IN
5.V
OUT
1
6.V
+
7.GND
8.V
OUT
2
40k鈩?/div>
40k鈩?/div>
#B
+V
REF
2
50k鈩?/div>
145k鈩?/div>
50k鈩?/div>
8
V
OUT
2
TSD
7
GND
-1-
NJM2770相關(guān)型號PDF文件下載
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