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LM4931 bảng dữ liệu(PDF) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LM4931
Giải thích chi tiết về linh kiện  Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone Amplifiers
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM4931 bảng dữ liệu(HTML) 11 Page - National Semiconductor (TI)

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Electrical Characteristics DV
DD = 3.3V, AVDD = 5V, RLHP =32Ω,RLHF =8Ω
(Notes 1, 2) (Continued)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A= 25˚C.
Symbol
Parameter
Conditions
LM4931
Units
(Limits)
Typical
(Note 6)
Limits
(Note 7)
f
IN
Input Frequency on MCLK pin
12
10
20
MHz (min)
MHz (max)
SPI/I
2C
f
SPI
Maximum SPI Frequency
400
4000
kHz (max)
t
SPISETD
SPI Data Setup Time
100
ns (min)
t
SPISETENB
SPI ENB Setup Time
100
ns (min)
t
SPISETHOLDD
SPI Data Hold Time
100
ns (min)
t
SPIHOLDENB
SPI ENB Hold Time
100
ns (min)
t
SPICL
SPI Clock Low Time
500
ns (min)
t
SPICH
SPI Clock High Time
500
ns (min)
t
SPIT
SPI Clock TransitionTime
5
ns (min)
t
CLKI2C
I
2C_CLK Frequency
400
3400
kHz (max)
t
I2CHOLD
I
2C_DATA Hold Time
100
ns (min)
t
I2CSET
I
2C_DATA Setup Time
100
ns (min)
PCM/I
2S
f
CLKPCM
PCM_CLK Frequency
128
kHz
PCM_CLK Duty Cycle
50
40
60
% (min)
% (max)
f
CLKI2S
I
2S_CLK Frequency
I
2S_RES = 0
I
2S_RES = 1
1536
3072
kHz
I
2S_WS Duty Cycle
50
40
60
% (min)
% (max)
Note 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 guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit
is given, however, the typical value is a good indication of device performance.
Note 2: All voltages are measured with respect to the relevant GND pin unless otherwise specified. All grounds should be coupled as close as possible to the
device.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX JA, 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 LM4931, see power
derating currents for more information.
Note 4: Human body model: 100pF discharged through a 1.5k
Ω resistor.
Note 5: Machine model: 220pF - 240pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Best operation is achieved by maintaining 3.0V
≤ AVDD ≤ 5.0 and 3.0V ≤ DVDD ≤ 3.6V and AVDD ≥ DVDD.
Note 9: Digital shutdown current is measured with system clock set for PLL output while the PLL is disabled.
Note 10: Disabling or bypassing the PLL will result in an improvement in noise measurements.
Note 11: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
www.national.com
11


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