828

NTE828
Integrated Circuit
Audio Power Amp, 1.5W
Description:
The NTE828 is an audio amplifier in a 14–Lead DIP type package designed for use in medium power
consumer applications. The gain is internally set to 20 to keep external part count low, but the addition
of an external resistor and capacitor between Pin2 and Pin6 will increase the gain to any value up to 200.
The inputs are ground referenced while the output is automatically biased to one half the supply voltage.
Features:
D Minimum External Parts
D Wide Supply Voltage Range
D Ground Referenced Input
D Excellent Supply Rejection
D Variable Voltage Gain
D Self–Centering Output Quiescent Voltage
D Low Distortion
D Low Voltage Operation, 4V
Applications:
D AM–FM Radio Amplifiers
D Intercoms
D TV Sound Systems
D Portable Tape Player Amplifiers
D Power Converters
D Lamp Drivers
D Ultrasonic Drivers
D Line Drivers
D Small Servo Drivers
Absolute Maximum Ratings:
Supply Voltage, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V
Package Dissipation (Note 1), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8.3W
Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.4V
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 10sec), TL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +300°C
Note 1 Pin3, Pin4, Pin5, Pin10, Pin11, and Pin12 at +25°C. Derate at 15°C/W above +25°C case.
Electrical Characterisitics: (TA = 25°C unless otherwise specified)
Parameter
Symbol
Operating Supply Voltage
VS
Quiescent Current
IQ
Output Power
Min
Typ
5
–
18
V
–
20
35
mA
VS = 12V, RL = 8Ω
1.5
2.2
–
W
VS = 6V, RL = 4Ω
0.6
0.8
–
W
VS = 12V, f = 1khz,
23
26
30
dB
10µF from Pin2 to Pin6
–
46
–
dB
VS = 16V, VIN = 0
POUT
Voltage Gain
Test Conditions
AV
R1 = R2 = 180Ω,
THD = 10%, Note 2
Max Unit
Bandwidth
BW
VS = 12V, Pin2 and Pin6 Open
–
300
–
kHz
Total Harmonic Distortion
THD
VS = 12V, RL = 8Ω, POUT = 500mW, f = 1kHz,
Pin2 and Pin6 Open
–
0.1
1.0
%
PSRR
VS = 12V, f = 1kHz, CBYPASS = 10µF,
Pin2 and Pin6 Open, Referred to Output, Note 3
–
50
–
dB
10
50
–
kΩ
–
250
–
nA
Power Supply Rejection Ratio
Input Resistance
RIN
Input Bias Current
IBIAS
VS = 12V, Pin7 and Pin8 Open
Note 2 The amplifier should be in high gain for full swing on higher supplies due to input voltage limitations.
Note 3 If load and bypass capacitor are returned to VS rather than ground, PSRR is typically 30dB.
Pin Connection Diagram
Bypass 1
Gain 2
GND 3
14 VS
13 Vout
12 GND
GND 4
11 GND
GND 5
10 GND
Gain 6
9 Bootstrap
(–) Input 7
8 (+) Input
14
8
1
7
.785 (19.95)
Max
.300
(7.62)
.200 (5.08)
Max
.100 (2.45)
.600 (15.24)
.099 (2.5) Min
Similar pages