Power Amplifier. NTE1850 Datasheet

NTE1850 Amplifier. Datasheet pdf. Equivalent

Part NTE1850
Description Integrated Circuit Dual 12W/Channel Audio Power Amplifier
Feature NTE1850 Integrated Circuit Dual 12W/Channel Audio Power Amplifier Description: The NTE1850 is a dual.
Manufacture NTE
Datasheet
Download NTE1850 Datasheet




NTE1850
NTE1850
Integrated Circuit
Dual 12W/Channel Audio Power Amplifier
Description:
The NTE1850 is a dual Hi–Fi audio power amplifier in a 9–Lead SIP type package designed for
mains–fed applications such as stereo TV sound and stereo radio. The circuit is optimal for symmetri-
cal power supplies but is also well suited to asymmetrical power supply systems. An output power
of 2 x 12W (THD = 0.5%) can be delivered into an 8load with a symmetrical power supply of ±16V.
The gain is fixed internally at 30dB, but can be changed externally if required. Internal gain fixing gives
low gain spread and very good balance between the amplifiers (0.2dB).
A special feature is an input mute circuit which provides suppression of unwanted signals at the inputs
during switching on and off. This circuit disconnects the non–inverting inputs when the supply voltage
is below ±6V, while allowing the amplifiers to remain in their DC operating condition.
Two thermal protection circuits are provided, one monitors the average junction temperature and the other
the instantaneous temperature of the power transistors. Both protection circuits activate at +150°C, allow-
ing safe operation to a maximum junction temperature of +150°C without added distortion.
Features:
Applications:
D Few External Components Required
D Stereo
D Input Muted During Power ON/OFF
D TV Sound
D Low Offset Voltage Between Output and GND D Radio
D Excellent Gain Balance Between Channels
D Short–Circuit Protected
D Thermally Protected
Absolute Maximum Ratings:
Supply Voltage (Pin5 and Pin7), VCC = V5, 7–3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +20V
Non–Repetitive Peak Output Current (Pin4 and Pin6), IOSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4A
Total Power Dissipation (TA = +25°C, Infinite Heatsink), PTOT . . . . . . . . . . . . . . . . . . . . . . . . . . . 15W
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.5°C/W
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Short–Circuit Time (Outputs Short–Circuited to GND), tSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Hr
Thermal Resistance, Junction–to–Case, RthJC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25°C/W



NTE1850
DC Electrical Characteristics:
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Voltage Range
VCC
±16 ±20 V
Repetitive Peak Output Current
IORM
– – 2.2 A
Operating Mode (Symmetrical Power Supply, VCC = ±16V, RL = 8, TA = +25°C, f = 1kHz)
Supply Voltage Range
VCC
±7.5 ±16 ±20 V
Total Quiescent Current
ITOT Without RL
50 mA
Output Power
PO THD = 0.5%
10 12 W
THD = 10%
10 15 W
Total Harmonic Distortion
Power Bandwidth
THD
B
PO = 6W
THD = 0.5%, Note 1
– – 0.2
20Hz to 20kHz
%
Voltage Gain
Noise Output Voltage
Input Impedance
Ripple Rejection
GV
VNO(RMS)
|Zi|
RR
RS = 2k, unweighted (20Hz to 2okHz)
Note 2
29 30 31 dB
70 140 µV
14 20 26 k
40 60 dB
Channel Separation
RS = 0
46
Input Bias Current
IIB
DC Output Offset Voltage
VOFF WRT GND
Input Mute Mode (Symmetrical Power Supply, VCC = ±4V, RL = 8, TA = +25°C, f = 1kHz)
Supply Voltage
VCC
±2
Total Quiescent Current
ITOT Without RL
Output Voltage
VOUT VI = 600mV
Noise Output Voltage
VNO(RMS) RS = 2k, unweighted (20Hz to 2okHz)
Ripple Rejection
RR Note 2
35
70 dB
0.3 µA
20 200 mV
±5.8 V
30 mA
1.8 mV
70 140 µV
– – dB
DC Output Offset Voltage
VOFF WRT GND
Operating Mode (Asymmetrical Power Supply, VCC = ±4V, RL = 8, TA = +25°C, f = 1kHz)
Total Quiescent Current
ITOT Without RL
Output Power
PO THD = 0.5%
5
THD = 10%
5
20 200 mV
50 mA
6 W
8.5 W
Total Harmonic Distortion
Power Bandwidth
THD
B
PO = 4W
THD = 0.5%, Note 1
– – 0.2
40Hz to 20kHz
%
Voltage Gain
Gain Balance
Noise Output Voltage
Input Impedance
Ripple Rejection
GV
GV
VNO(RMS)
|Zi|
RR
RS = 2k, unweighted (20Hz to 2okHz)
Note 2
29 30 31 dB
0.2 dB
70 140 µV
14 20 26 k
40 50 dB
Channel Separation
RS = 0
40 – – dB
Note 1. Power Bandwidth at PO(MAX) = 3dB.
Note 2. Ripple Rejection at RS = 0, f = 100Hz to 20kHz; ripple voltage = 200mV (RMS value) applied
to positive or negative supply rail.







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