1228

NTE1228
Integrated Circuit
Audio Power Amp, 2.1W
Features:
D AF Output Power
D Sufficient Regulation Under Dry Battery Operation
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Maximum Supply Voltage, VCCmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13V
Allowable Power Dissipation, Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2W
Allowable Power Dissipation (Note 1), Pdmax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.25W
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C
Note 1. With 50 x 50mm2 printed board for radiator.
Recommended Operation Condition: (TA = +25°C unless otherwise specified)
Recommended Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V
Load Resistance, RL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4,8Ω
Electrical Characteristics: (TA = +25°C, VCC = 9V, RL = 4Ω, f = 1kHz unless otherwise specified)
Parameter
Symbol
Quiescent Current
ICCO
Voltage Gain
VG
Output Power
Total Harmonic Distortion
Input Resistance
Output Noise Voltage
PO
THD
Test Conditions
Min
Typ
Max
Unit
–
15
25
mA
Open Loop
–
70
–
dB
At Appointed Circuit
42
45
48
dB
THD = 10%, RL = 4Ω
1.3
2.1
–
W
THD = 10%, RL = 8Ω
–
1.4
–
W
PO = 250mW
–
0.5
1.5
%
12k
20k
–
Ω
Rg = 10kΩ
–
–
3
mV
Rg = 0
–
–
1.0
mV
ri
VNO
Pin Connection Diagram
Audio Output 1
14 VCC
N.C. 2
13 Ripple Filter Capacitor
GND 3
12 Ripple Filter Capacitor
Equalization Feedback Network 4
11 N.C.
Equalization Feedback Network 5
10 Ripple Filter Capacitor
9 Audio Input
Series RC Network 6
N.C. 7
.099 (2.52)
14
8 N.C.
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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