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LM4951ASD bảng dữ liệu(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM4951ASD
Giải thích chi tiết về linh kiện  Wide Voltage Range 1.8 Watt Audio Amplifier With Short Circuit Protection
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nhà sản xuất  NSC [National Semiconductor (TI)]
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LM4951ASD bảng dữ liệu(HTML) 6 Page - National Semiconductor (TI)

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Symbol
Parameter
Conditions
LM4951A
Units
(Limits)
Typical
(Note 6)
Limit
(Note 7)
P
O
Output Power
THD = 1% (max); f = 1kHz
R
L = 8Ω Mono BTL
280
230
mW (min)
THD+N
Total Harmonic Distortion + Noise
P
O = 100mWRMS = 1kHz
A
V-BTL = 6dB
0.07
0.5
% (max)
P
O = 100mWRMS; f = 1kHz
A
V-BTL = 26dB
0.35
%
ε
OS
Output Noise
A-Weighted Filter, R
i = Rf = 20kΩ
Input Referred, (Note 9)
10
µV
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVp-p, f = 217Hz,
C
B = 1μF, Input Referred
71
61
dB (min)
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability
and/or performance. Functional operation of the device and/or non-degradation at the s or other conditions beyond those indicated in the Recommended Operating
Conditions is not implied. The Recommended Operating Conditionsindicate conditions at which the device is functional and the device should not be operated
beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified
or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX, θJA, and the ambient temperature, TA. The maximum
allowable power dissipation is P
DMAX = (TJMAX - TA) / θJA or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4951A typical application
(shown in Figure 1) with V
DD = 7.5V, RL = 8Ω mono-BTL operation the max power dissipation is 1.42W. θJA = 73ºC/W.
Note 4: Human body model, applicable std. JESD22-A114C.
Note 5: Machine model, applicable std. JESD22-A115-A.
Note 6: Typical values represent most likely parametric norms at T
A = +25ºC, and at the Recommended Operation Conditions at the time of product
characterization and are not guaranteed.
Note 7: Datasheet min/max specification limits are guaranteed by test or statistical analysis.
Note 8: Shutdown current is measured in a normal room environment. The Shutdown pin should be driven as close as possible to GND for minimum shutdown
current.
Note 9: Noise measurements are dependent on the absolute values of the closed loop gain setting resistors (input and feedback resistors).
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