1472

NTE1472
Integrated Circuit
Audio Power Amplifier, 1W
for Tape Recorder
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11V
Supply Current, I11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30mA
Allowable Power Dissipation, PDmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2W
(50 x 50 x 1.5mm3 Al heatsink added) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6V
Load Resistance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 (3.2) Ω
Electrical Characteristics: (TA = +25°C, VCC = 6V, RL = 4Ω (3.2Ω), f = 1kHz, RG = 600Ω unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Quiescent Current
ICCO
–
15
25
mA
Voltage Gain
VG
–
75
–
dB
Output Power
PO
RL = 4Ω, THD = 10%
0.7
1.0
–
W
RL = 3.2Ω, THD = 10%
0.8
1.1
–
W
12k
20k
–
Ω
Input Resistance
ri
Total Harmonic Distortion
THD
PO = 250mW
–
–
1.5
%
Output Noise Volatge
VNO
RG = 10kΩ
–
–
2.5
mV
RG = 0Ω
–
–
0.8
mV
Pin Connection Diagram
Tab
Output 1
14 VCC
N.C. 2
13 Feedback
GND 3
12 Muting Circuit
Feedback 4
11 DO NOT USE
Feedback 5
10 Bypass
Bypass 6
9 Input
N.C. 7
8 DO NOT USE
.099 (2.52)
14
8
.252
(6.45)
1
.082 (2.1) Dia
.265
(6.5)
7
.748 (19.0)
.300
(7.62)
.167
(4.26)
.100 (2.54)
.236 (6.0)
.137 (3.5)
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