NTE NTE1724

NTE1724
Integrated Circuit
Audio Power Amplifier, 20W
Description:
This device is a monolithic integrated circuit and a power amplifier designed for Hi−Fi audio sets and
in a 10 pin single in−line plastic package. NTE1724 can provide 20W (Typ) to 8Ω at 1% THD and ±22V
supply voltage.
Features:
D High Output Power:
20W Typ (VCC = ±22V, Av = 40dB, f = 20Hz to 20kHz, RL = 8Ω, THD = 1%)
20W Typ (VCC = ±22V, Av = 27.5dB, f = 20Hz to 20kHz, RL = 8Ω, THD = 0.5%)
D Low Distortion:
0.02% Typ (VCC = ±22V, Av = 40dB, f = 1kHz, RL = 8Ω, POUT = 5.0W)
0.005% Typ (VCC = ±22V, Av = 27.5dB, f = 1kHz, RL = 8Ω, POUT = 5.0W)
D Wide Frequency Bandwidth: f = 250kHz (−3dB)
Absolute Maximum Ratings:
Supply Voltage (Quiescent), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30V
Circuit Current, ICC(peak) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5A
Package Dissipation (Ttab = +60°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30W
Operating Temperature Range, Topt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −55° to +150°C
Thermal Resistance Junction to Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3°C/W
Recommended Operating Conditions: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Operating Supply Voltage
±17
±22
±23
V
Input Impedance
47
56
100
kΩ
Closed Loop Voltage Gain
26
40
−
dB
Load Impedance
4
8
−
Ω
Electrical Characteristics: (VCC = ±22V, AV = 40dB, RL = 8Ω, TG = 600Ω, TA = +25°C unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Offset Voltage
V10
No Signal
−100
0
+100
mV
Circuit Current
ICC
No Signal
30
60
120
mA
Output Power
PO
THD = 0.5%, f = 20Hz to 20kHz
16
18
−
W
Electrical Characteristics (Cont’d): (VCC = ±22V, AV = 40dB, RL = 8Ω, TG = 600Ω, TA = +25°C
unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Open Loop Voltage Gain
AVO
PO = 0.3W, f = 1kHz
65
75
−
dB
Total Harmonic Distortion
THD
PO = 10W, f = 20Hz to 20kHz
−
0.1
0.3
%
RG = 2.2kΩ, No Filter
−
0.4
1.0
mV
Output Noise Voltage
NV
Power Band Width
PBW
PO = 0.3W, −3dB
−
250
−
kHz
Supply Voltage Rejection Ratio
SVR
RG = 2.2kΩ fripple = 100Hz
50
56
−
dB
Pin Connection Diagram
(Front View)
10 (−) VCC
9 GND
8 NFB
7 Input
6 Phase Compensation
5 Phase Compensation
4 Muting
3 (+) VCC
2 N.C.
1 Output
1.260 (32.0) Max
.945 (24.0)
.107 (2.7)
.512
(13.0))
.052 (1.3) R
1
10
.591
(15.0)
Max
.240 (6.1)
Min
.100 (2.54)
.030 (.762)
.001 (.025)