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LM4951 Datenblatt(PDF) 4 Page - Texas Instruments

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Teilenummer LM4951
Bauteilbeschribung  Wide Voltage Range 1.8 Watt Audio Amplifier
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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LM4951 Datenblatt(HTML) 4 Page - Texas Instruments

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LM4951
SNAS244N – AUGUST 2004 – REVISED MAY 2013
www.ti.com
Electrical Characteristics VDD = 7.5V
(1) (2)
The following specifications apply for VDD = 7.5V, AV-BTL = 6dB, RL = 8Ω unless otherwise specified. Limits apply for TA =
25°C.
Symbol
Parameter
Conditions
LM4951
Units
(Limits)
Typical(3)
Limit(4)(5)
IDD
Quiescent Power Supply Current
VIN = 0V, IO = 0A,RL = 8Ω
2.5
4.5
mA (max)
ISD
Shutdown Current
VSHUTDOWN = GND
(6)
0.01
5
µA (max)
VOS
Offset Voltage
5
30
mV (max)
VSDIH
Shutdown Voltage Input High
1.2
V (min)
VSDIL
Shutdown Voltage Input Low
0.4
V (max)
Rpulldown
Pulldown Resistor on S/D
75
45
k
Ω (min)
TWU
Wake-up Time
CB = 1.0µF
25
35
ms
Tsd
Shutdown time
CB = 1.0µF
10
ms (max)
150
°C (min)
TSD
Thermal Shutdown Temperature
170
190
°C (max)
THD = 1% (max); f = 1kHz
PO
Output Power
1.8
1.5
W (min)
RL = 8Ω Mono BTL
PO = 600mWrms; f = 1kHz
THD+N
Total Harmomic Distortion + Noise
0.07
0.5
% (max)
AV-BTL = 6dB
PO = 600mWrms; f = 1kHz
THD+N
Total Harmomic Distortion + Noise
0.35
%
AV-BTL = 26dB
A-Weighted Filter, Ri = Rf = 20kΩ
εOS
Output Noise
10
µV
Input Referred, Note 10
VRIPPLE = 200mVp-p, f = 217Hz,
PSRR
Power Supply Rejection Ratio
66
56
dB (min)
CB = 1.0μF, Input Referred
(1)
All voltages are measured with respect to the GND pin, unless otherwise specified.
(2)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is functional, but do not ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not specified for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(3)
Typicals are measured at 25°C and represent the parametric norm.
(4)
Limits are specified to AOQL (Average Outgoing Quality Level).
(5)
Datasheet min/max specification limits are specified by design, test, or statistical analysis.
(6)
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.
4
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