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參數(shù)資料
| 型號： | LM4921ITLX/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PBGA20 |
| 封裝： | MICRO, SMD-20 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大小： | 457K |
| 代理商： | LM4921ITLX/NOPB |
Electrical Characteristics DV
The following specifications apply for the circuit shown in Figure 1 unless otherwise specified. Limits apply for T
A = 25°C.
Symbol
Parameter
Conditions
LM4921
Units
(Limits)
Typical
Limit
(Note 6)
(Notes 7, 9)
DV
DD
Digital Power Supply Voltage
Note 8
3.0
V
AV
DD
Analog Power Supply Voltage
Note 8
3.0
V
DI
DD
Digital Power Supply Quiescent
Current
R
Load = ∞, fMLCK = 11.2896MHz
3.5
7.5
mA (max)
AI
DD
Analog Power Supply Quiescent
Current
R
Load = ∞, fMCLK = 0MHz
5
9.0
mA (max)
I
SD
Total Shutdown Power Supply
Current
SHUTDOWN SPI bits 1 & 2 set to
logic 0,
SPI, M
CLK and I
2
S inputs at GND
1
uA(max)
I
SB
Standby Current
Analog and Digital together
All clocks off
15
uA
V
FS
Full-Scale Output Voltage
Gain set at max
2.6
V
P-P
THD+N
Total Harmonic Distortion + Noise
f
IN = 1kHz, POUT = 12mW
(Vol Cont = 11011, I2S input adj to get
12mW at output)
0.05
%
P
O
Headphone Amplifier Output Power
THD = (0.5%), f
OUT = 1kHz
26
mW (min)
PSRR
Power Supply Rejection Ratio
AV
DD CBYPASS = 2.0F
V
RIPPLE = 200mVP-P 217Hz
52
dB (min)
SNR
Signal-to-Noise Ratio
f
IN = 1kHz sinewave at -60dBFS,
A-weighted-f
CONV = 44.1kHz
79
dB
DR
Dynamic Range
f
IN = 1kHz sinewave at -60dBFS,
A-weighted
81
dB
ΔA
CH-CH
Channel-to-Channel Gain Mismatch f
IN = 1kHz
0.06
dB
X
TALK
Channel-to-Channel Crosstalk
f
CONV = 44.1kHz,
f
IN = 1kHz sinewave at -3dBFS
72
dB
Volume Control Range
Minimum Attenuation
Maximum Attenuation
0
-43.5
dB
Volume Control Control Step Size
1.5
dB
Mute Attenuation
-100
dB
www.national.com
6
LM4921
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM4922 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Ground-Referenced, Ultra Low Noise, Fixed Gain, 80mW Stereo Headphone Amplifier |
| LM4922TL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LM4922TL/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4922TLX/NOPB | 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產品: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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| LM4923 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.1 Watt Fully Differential Audio Power Amplifier With Shutdown Select |
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