參數(shù)資料
型號(hào)： LM4921ITLX/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PBGA20
封裝： MICRO, SMD-20
文件頁數(shù)： 16/20頁
文件大?。?/td> 457K
代理商： LM4921ITLX/NOPB
Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
6.0V
Storage Temperature
65°C to +150°C
Input Voltage
-0.3V to V
DD + 0.3V
Power Dissipation (Note 3)
Internally Limited
ESD Susceptibility
Human body model (Note 4)
2000V
Machine model (Note 5)
200V
Junction Temperature
150°C
Thermal Resistance
θ
JA
60°C/W
Operating Ratings
Temperature Range
T
MIN ≤ TA ≤ TMAX
40°C
≤ T
A ≤ 85°C
Supply Voltage
DV
DD
2.6V
≤ DV
DD ≤ 5.0V
AV
DD
2.6V
≤ AV
DD ≤ 5.5V
Electrical Characteristics DV
DD = 3.0V, AVDD = 5.0V, RL = 32 (Notes 1, 2)
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
5.0
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
6
10
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
5
uA(max)
I
SB
Standby Current
Analog and Digital together
All clocks off
25
uA
V
FS
Full-Scale Output Voltage
Gain set at max
3.5
V
P-P
THD+N
Total Harmonic Distortion + Noise
f
IN = 1kHz, POUT = 12mW
(Vol Control = 11111, I2S input adj to
get 12mW at output)
0.03
%
P
O
Headphone Amplifier Output Power
THD = (0.5%), f
OUT = 1kHz
50
40
mW (min)
PSRR
Power Supply Rejection Ratio
AV
DD CBYPASS = 2.0F
V
RIPPLE = 200mVP-P 217Hz
62
45
dB (min)
SNR
Signal-to-Noise Ratio
f
IN = 1kHz sinewave at -60dBFS,
A-weighted-f
CONV = 44.1kHz
82
dB
DR
Dynamic Range
f
IN = 1kHz sinewave at -60dBFS,
A-weighted
84
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
+3.0
-43.5
dB
Volume Control Control Step Size
1.5
dB
Mute Attenuation
-102
dB
5
www.national.com
LM4921
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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
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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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