1468

NTE1468
Integrated Circuit
Audio, Low Power Output Amplifier
Applications:
D Line Output Amplifier
D Recording Head Driver and Headphone Driver of Tape Recorder Deck.
Features:
D Low Noise: VNI = 1µVrms
D Wide Operating Supply Voltage Range: VCC = 3.5 to 25V
D 150mW Audio Output Power at VCC = 20V, RL = 150Ω
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25V
Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW
Derated Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4mW/°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Electrical Characteristics: (VCC = 20V, TA = +25°C, RL = 150Ω, Rf = 600Ω, f = 1kHz unless
otherwise specified)
Parameter
Operating Supply Voltage Range
Supply Current
Voltage Gain (Open Loop)
Voltage Gain (Closed Loop)
Total Harmonic Distortion
Symbol
Test Conditions
Min
Typ Max
3.5
20
25
V
f = 1kHz, VOUT = 0
–
4.0
6.0
mA
f = 1kHz, VOUT = 4.5Vrms
–
16.5
–
mA
GVO
Rf = 0Ω
–
63
–
dB
GV
Note 1
VCCopr
ICC
THD
Maximum Output Voltage
VOM
Input Resistance
RIN
Output Noise Voltage
VNO
36.5 40.0 43.5
Unit
dB
VOUT = 4.5Vrms
–
0.5
1.0
%
VCC = 6.5V, VOUT = 1.0Vrms
–
1.0
–
%
THD = 10%
–
6
–
Vrms
–
30
–
kΩ
–
100
BW = 20Hz to 20kHz, Rg = 1kΩ
200 µVrms
Note 1. In regard to the value of voltage gain (closed loop), it is possible to be classified.
Pin Connection Diagram
(Front View)
7 Feedback
6 VCC
5 Output
4 GND
3 Bypass
2 Bypass
1 Input
.128 (3.2)
.099
(2.5)
Min
.012 (0.25)
.700 (17.8) Max
1
7
.100 (2.54)
.600 (15.24)
.323
(8.2)
Max
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