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參數(shù)資料
| 型號： | LM4930 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
| 中文描述： | 音頻子系統(tǒng)的立體聲耳機(jī) |
| 文件頁數(shù)： | 15/33頁 |
| 文件大?。?/td> | 966K |
| 代理商： | LM4930 |
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Electrical Characteristics DV
DD
= 3V, AV
DD
= 3V, R
LHP
= 32
, R
LHF
= 8
(Notes 1, 2, 3) (Continued)
The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4930
Units
(Limits)
Typical
(Note 6)
Limits
(Notes 7,
15)
t
SDAS
f
CLKPCM
SDA_DATA Setup Time
PCM_CLK Frequency
500
128
256
512
ns
kHz
kHz
kHz
PCM_SYNC_MODE = 00
PCM_SYNC_MODE = 01
PCM_SYNC_MODE = 10
PCM_CLK Duty Cycle
50
40
60
% (min)
% (max)
MHz
MHz
% (min)
% (max)
f
CLKI2S
I2S_CLK Frequency
I2S_RES = 0
I2S_RES = 1
1.536
3.072
I2S_CLK Duty Cycle
50
40
60
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.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
JMAX
,
θ
JA
, and the ambient temperature, T
A
. The maximum
allowable power dissipation is P
DMAX
= (T
JMAX
– T
A
) /
θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4930, see power
derating currents for more information.
Note 4:
Human body model: 100pF discharged through a 1.5k
resistor.
Note 5:
Machine model: 220pF - 240pF discharged through all pins.
Note 6:
Typicals are measured at 25C 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
≤
AV
DD
≤
5.0 and 3.0V
≤
DV
DD
≤
3.6V. AV
DD
must be equal to or greater than DV
DD
. for proper operation.
Note 9:
The sampling clock frequency is equal to the master clock frequency divided by 256. (f
conv
= f
MCLK
/256)
Note 10:
This value represents the 0dB output level of the given amplifier for the given analog supply voltage. Gain values given in the GAINCONFIG register are
relative to these full-scale values for each output amplifier.
Note 11:
To ensure a successful transistion into Powerdown Mode, ZXD_DISABLE must be set whenever there is no audio input signal present.
Note 12:
It is recommended to alter this bit only while the part is in Powerdown Mode.
Note 13:
Reserved bits should be set to zero when programming the associated register.
Note 14:
With the exception of Standby Mode, rapid switching between modes should be avoided. Rapid switching between modes will not ensure that the desired
mode will be activated.
Note 15:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 16:
0dBm0 = -3dBFS for the PCM voice codec and 0dBm0 = -1dBFS for the I
2
S DAC, unless otherwise specified.
L
www.national.com
15
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4930_04 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Audio Subsystem with Stereo Headphone & Mono Speaker Amplifiers |
| LM4930ITL | 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Microphone/Speaker 1-CH Mono/2-CH Stereo 1W Class-AB 36-Pin uSMD T/R |
| LM4930ITL/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4930ITLX | 制造商:Texas Instruments 功能描述:Audio Amp Headphone/Microphone/Speaker 1-CH Mono/2-CH Stereo 1W Class-AB 36-Pin uSMD T/R |
| LM4930ITLX/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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