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LM4990 Arkusz danych(PDF) 6 Page - Texas Instruments

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Numer części LM4990
Szczegółowy opis  2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

LM4990 Arkusz danych(HTML) 6 Page - Texas Instruments

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LM4990
SNAS184E – DECEMBER 2002 – REVISED MAY 2013
www.ti.com
Electrical Characteristics VDD = 3V
(1) (2)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25°C.
LM4990
Units
Symbol
Parameter
Conditions
(Limits)
Typical(3)
Limit(4)(5)
VIN = 0V, Io = 0A, No Load
2
7
mA (max)
IDD
Quiescent Power Supply Current
VIN = 0V, Io = 0A, 8Ω Load
3
9
mA (max)
ISD
Shutdown Current
VSD = VSD Mode
(6)
0.1
2.0
µA (max)
VSDIH
Shutdown Voltage Input High
VSD MODE = VDD
1.1
V
VSDIL
Shutdown Voltage Input Low
VSD MODE = VDD
0.9
V
VSDIH
Shutdown Voltage Input High
VSD MODE = GND
1.3
V
VSDIL
Shutdown Voltage Input Low
VSD MODE = GND
1.0
V
VOS
Output Offset Voltage
7
50
mV (max)
ROUT
9.7
k
Ω (max)
Resistor Output to GND(7)
8.5
7.0
k
Ω (min)
(8
Ω)
THD+N = 1% (max); f = 1kHz
425
mW
Po
Output Power
(4
Ω)
THD+N = 1% (max); f = 1kHz
600
mW
TWU
Wake-up time
75
ms
THD+N
Total Harmonic Distortion+Noise
Po = 0.25Wrms; f = 1kHz
0.1
%
+N
Vripple = 200mV sine p-p
62 (f = 217Hz)
PSRR
Power Supply Rejection Ratio
55
dB (min)
Input terminated with 10
68 (f = 1kHz)
(1)
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for
which the device is intended to be functional but specific performance is not ensured. 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 ensured for parameters where no limit is given, however, the typical value is a good
indication of device performance.
(2)
All voltages are measured with respect to the ground pin, unless otherwise specified.
(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)
For DSBGA only, shutdown current is measured in a Normal Room Environment. Exposure to direct sunlight will increase ISD by a
maximum of 2µA.
(7)
RROUT is measured from the output pin to ground. This value represents the parallel combination of the 10kΩ output resistors and the
two 20k
Ω resistors.
6
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Copyright © 2002–2013, Texas Instruments Incorporated
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