Audio Amplifier. NTE1851 Datasheet

NTE1851 Amplifier. Datasheet pdf. Equivalent

Part NTE1851
Description Integrated Circuit Audio Amplifier
Feature NTE1851 Integrated Circuit Audio Amplifier, 24W BTL Description: The NTE1851 is a monolithic integra.
Manufacture NTE
Datasheet
Download NTE1851 Datasheet




NTE1851
NTE1851
Integrated Circuit
Audio Amplifier, 24W BTL
Description:
The NTE1851 is a monolithic integrated class–B amplifier in a 13–Lead Staggered SIP type package
primarily developed for car radio applications, and also to drive low–impedance loads (down to 1.6).
At a supply voltage VCC = 14.4V, an output power of 21W can be delivered into a 4BTL (Bridge–Tied
Load), or, when used as a stereo amplifier, it delivers 2 x 11W into 2or 2 x 6.5W into 4.
Features:
D Flexibility In Use – Mono BTL as well as Stereo D
D High Output Power
D
D Low Offset Voltage at the Output
(Important for BTL)
D
D Large Usable Gain Variation
D
D Very Good Ripple Rejection
D
D Internal Limited Bandwidth for High Frequencies
D Low Standby Current Possiblity (1µA Typ), to D
Simplify Required Switches: TTL Drive Possible D
D Low Number of Small–Sized External Compo- D
nents
High Reliability
Load Dump Protection
AC and DC Short–Circuit Safe to Ground up to
VCC = 18V
Thermal Protection
Speaker Protection in Bridge Configuration
SOAR Protection
Outputs Short–Circuit Safe to Ground in BTL
Reverse–Polarity Safe
Applications:
D Car Radio Applications
D Drive Low Impedance Loads
D Stereo Amplifier
Absolute Maximum Ratings:
Supply Voltage (Pin10), VCC
Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Non–Operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Supply Voltage (During 50ms Load Dump Protection), VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45V
Peak Output Current, IOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8A
Crystal Temperature, TC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
AC and DC Short–Circuit Safe Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Reverse Polarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10V



NTE1851
DC Electrical Characteristics:
Parameter
Supply Voltage Range (Pin10)
Repetitive Peak Output Current
Total Quiescent Current
Switching Level 11
OFF
ON
Impedance Between Pin10 & Pin6;
Pin10 & Pin8
Standby Current
SwitchOn Current (Pin11)
Symbol
VCC
IORM
ITOT
V11
Test Conditions
|ZOFF| Standby Position V11 < 1.8V
ISB V11 = 0 to 0.8V
ISO V11 V10
Min Typ Max Unit
6 18 V
––4A
75 75 mA
V
– – 1.8
3.0 – – V
100 – – k
1 100 µA
10 100 µA
AC Electrical Characteristics: (TA = +25°C, VCC = 14.4V, f = 1kHz unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Bridge–Tied Load Application (BTL)
Output Power with Bootstrap
OpenLoop Voltage Gain
ClosedLoop Voltage Gain
Output Power without Bootstrap
PO RL = 4VCC = 14.4V, dTOT = 0.5%
VCC = 14.4V, dTOT = 10%
VCC = 13.2V, dTOT = 0.5%
VCC = 13.2V, dTOT = 10%
GO
GC Note 2
PO Note 3
VCC = 14.4V, dTOT = 0.5%
VCC = 14.4V, dTOT = 10%
Frequency Response at 3dB
B Note 4
VCC = 13.2V, dTOT = 0.5%
VCC = 13.2V, dTOT = 10%
Input Impedance
Noise Input Voltage (RMS Value)
|Zi|
VN(RMS)
Note 5
RS = 0
RS = 10k
f = 20Hz to 20kHz
VN
Supply Voltage Ripple Rejection RR f = 100Hz
DC Output Offset Voltage
Between the Outputs
|V59|
Loudspeaker Protection
(All Conditions)
Maximum DC Voltage
(Across the Load)
|V59|
Power Bandwidth
B 1dB, dTOT = 0.5%
15.5 18.0
20 24
15
20
75
40
12 12
15 15
99
12 12
20 20
1––
0.2 0.2
0.35 0.35
0.25 0.8
42 50 50
2 50
––1
30 40
W
W
W
W
dB
dB
W
W
W
W
Hz
M
mV
mV
mV
dB
mV
V
kHz
Note 1. The internal circuit impedance at Pin11 is > 5kif V11 > V10.
Note 2. ClosedLoop voltage gain can be chosen between 32 and 56dB (BTL), and is determined
by external components.
Note 3. Without the bootstrap the 100µF capacitor between Pin5 and Pin6 (Pin8 and Pin9) can be
omitted. Pin6, Pin8, and Pin10 have to be interconnected.
Note 4. Frequency response externally fixed.
Note 5. The input impedance in the test circuit is typically 100k.







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