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LM49370 Folha de dados(PDF) 6 Page - Texas Instruments

Nome de Peças LM49370
Descrição Electrónicos  Audio Power Amplifier Series Audio Sub-System with an Ultra Low EMI, Spread Spectrum, Class D Loudspeaker Amplifier
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

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LM49370
SNAS356D – FEBRUARY 2007 – REVISED MARCH 2012
www.ti.com
Absolute Maximum Ratings
(1) (2)
Analog Supply Voltage
(A_VDD & LS_VDD)
6.0V
Digital Supply Voltage
(BB_VDD & D_VDD & PLL_VDD)
6.0V
Storage Temperature
−65°C to +150°C
Power Dissipation (3)
Internally Limited
ESD Susceptibility
Human Body Model (4)
2500V
Machine Model (5)
200V
Junction Temperature
150°C
Thermal Resistance
θJA – YPG49 (soldered down to PCB with 2in
2 1oz. copper plane)
60°C/W
Soldering Information
(1)
All voltages are measured with respect to the relevant VSS pin unless otherwise specified. All grounds should be coupled as close as
possible to the device.
(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. 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.
(3)
The maximum power dissipation must be de-rated 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.
(4)
Human body model: 100pF discharged through a 1.5k
Ω resistor.
(5)
Machine model: 220pF – 240pF discharged through all pins.
Operating Ratings
Temperature Range
−40°C to +85°C
Supply Voltage
D_VDD/PLL_VDD
2.5V to 4.5V
BB_VDD
1.8V to 4.5V
LS_VDD = A_VDD
(1)
2.5V to 5.5V
(1)
LS_VDD must be equal to A_VDD due to intend ESD diode structure. For proper operation, LS_VDD and A_VDD need to be the highest
voltage than BB_VDD, D_VDD, and PLL_VDD and must be applied first.
Electrical Characteristics
(1) (2)
Unless otherwise stated PLL_VDD = 3.3V, D_VDD = 3.3V, BB_VDD = 1.8V, A_VDD = 3.3V, LS_VDD = 3.3V. The following
specifications apply for the circuit shown in Figure 2 unless otherwise stated. Limits apply for 25°C.
LM49370
Symbol
Parameter
Conditions
Units
Limit(4)
Typical(3)
(5)
POWER
DISD
Digital Shutdown Current(6)
Chip Mode '00', fMCLK = 13MHz
0.7
2.2
µA (max)
DIST
Digital Standby Current
Chip Mode '01', fMCLK = 13MHz
0.9
1.8
mA(max)
AISD
Analog Shutdown Current
Chip Mode '00'
0.1
1.2
µA(max)
AIST
Analog Standby Current
Chip Mode '01'
0.1
1.2
µA (max)
(1)
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. 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 relevant VSS pin unless otherwise specified. All grounds should be coupled as close as
possible to the device.
(3)
Typical values are measured at 25°C and represent the parametric norm.
(4)
Limits are specified to TI's AOQL (Average Outgoing Quality Level).
(5)
Datasheet min/max specification limits are specified by design, test, or statistical analysis.
(6)
Digital shutdown current is measured with system clock set for PLL output while the PLL is disabled.
6
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Product Folder Links: LM49370


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