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LM49270 Datenblatt(PDF) 4 Page - Texas Instruments

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Teilenummer LM49270
Bauteilbeschribung  Filterless 2.2W Stereo Class D Audio Subsystem with OCL Headphone Amplifier, 3D Enhancement, and Headphone Sense
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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LM49270
SNAS384B – DECEMBER 2006 – REVISED MARCH 2007
www.ti.com
Pin Descriptions (continued)
PIN
NAME
DESCRIPTION
28
GND
Headphone ground
Absolute Maximum Ratings
(1) (2) (3)
Supply Voltage (1)
6.0V
Storage Temperature
−65°C to +150°C
Input Voltage
–0.3V to VDD +0.3V
Power Dissipation (4)
Internally Limited
ESD Susceptibility(5)
2000V
ESD Susceptibility (6)
200V
Junction Temperature (TJMAX)
150°C
Thermal Resistance
θJA
35.1°C/W
(1)
All voltages are measured with respect to the ground 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 specify 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.
(3)
If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(4)
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature,
TA. The maximum allowable power dissipation is PDMAX = (TJMAX – TA)/ θJA or the number given in Absolute Maximum Ratings,
whichever is lower. For the LM49270 see power derating currents for more information.
(5)
Human body model, 100pF discharged through a 1.5k
Ω resistor.
(6)
Machine Model, 220pF–240pF discharged through all pins.
Operating Ratings
(1)
Temperature Range
TMIN ≤ TA ≤ TMAX
−40°C ≤ TA ≤ 85°C
Supply Voltage
2.4V
≤ VDD ≤ 5.5V
(VDD, LSVDD, HPVDD)
I2C Voltage (I2CVDD)
2.4V
≤ I2CVDD ≤ 5.5V
(1)
All voltages are measured with respect to the ground pin, unless otherwise specified.
4
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