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參數(shù)資料
| 型號(hào)： | LM4921 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Low Voltage I2S 16-Bit Stereo DAC with Stereo Headphone Power Amplifiers and Volume Control |
| 中文描述： | 低電壓的I2S 16位立體聲DAC立體聲耳機(jī)功率放大器和音量控制 |
| 文件頁數(shù)： | 6/18頁 |
| 文件大小： | 849K |
| 代理商： | LM4921 |
Electrical Characteristics DV
DD
= 3.0V, AV
DD
= 3.0V, R
L
= 32
(Notes 1, 2)
The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4921
Units
(Limits)
Typical
(Note 6)
3.0
3.0
3.5
Limit
(Notes 7, 9)
DV
DD
AV
DD
DI
DD
Digital Power Supply Voltage
Analog Power Supply Voltage
Digital Power Supply Quiescent
Current
Analog Power Supply Quiescent
Current
Total Shutdown Power Supply
Current
Note 8
Note 8
R
Load
=
∞
, f
MLCK
= 11.2896MHz
V
V
7.5
mA (max)
AI
DD
R
Load
=
∞
, f
MCLK
= 0MHz
5
9.0
mA (max)
I
SD
SHUTDOWN SPI bits 1 & 2 set to
logic 0,
SPI, M
CLK
and I
2
S inputs at GND
Analog and Digital together
All clocks off
Gain set at max
f
IN
= 1kHz, P
OUT
= 12mW
(Vol Cont = 11011, I
2
S input adj to
get 12mW at output)
1
uA(max)
I
SB
Standby Current
15
uA
V
FS
THD+N
Full-Scale Output Voltage
Total Harmonic Distortion + Noise
2.6
V
P-P
0.05
%
P
O
Headphone Amplifier Output Power THD = (0.5%), f
OUT
= 1kHz
26
mW (min)
PSRR
Power Supply Rejection Ratio
AV
DD
C
BYPASS
= 2.0μF
V
RIPPLE
= 200mV
P-P
217Hz
f
IN
= 1kHz sinewave at -60dB
FS
,
A-weighted-f
CONV
= 44.1kHz
f
IN
= 1kHz sinewave at -60dB
FS
,
A-weighted
52
dB (min)
SNR
Signal-to-Noise Ratio
79
dB
DR
Dynamic Range
81
dB
A
CH-CH
X
TALK
Channel-to-Channel Gain Mismatch f
IN
= 1kHz
Channel-to-Channel Crosstalk
0.06
dB
f
CONV
= 44.1kHz,
f
IN
= 1kHz sinewave at -3dB
FS
Minimum Attenuation
Maximum Attenuation
72
dB
Volume Control Range
0
-43.5
1.5
-100
dB
dB
dB
dB
Volume Control Control Step Size
Mute Attenuation
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM4921ITL | 制造商:Texas Instruments 功能描述:16BIT STEREO DAC + AMP SMD 4921 |
| LM4921ITL/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 |
| LM4921ITLEVAL | 功能描述:音頻 IC 開發(fā)工具 LM4921ITL EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| LM4921ITLX | 制造商:Texas Instruments 功能描述:IC,Audio Amplifier,DUAL,BGA,20PIN,PLASTIC |
| LM4921ITLX/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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