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LM4981 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM4981
Giải thích chi tiết về linh kiện  Ground-Referenced, 80mW Stereo Headphone Amplifier with Digital Volume Control
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
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LM4981 bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
4.5V
Storage Temperature
−65˚C to +150˚C
Input Voltage
−0.3V to V
DD +0.3V
Power Dissipation(Note 3)
Internally Limited
ESD Susceptibility (Note 4)
2500V
ESD Susceptibility (Note 5)
250V
Junction Temperature
150˚C
Operating Ratings
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
−40˚C
≤ T
A
≤ 85˚C
Supply Voltage (V
DD)
2.0V
≤ V
CC
≤ 4.2V
Electrical Characteristics V
DD =3V (Notes 1, 2)
The following specifications apply for V
DD = 3V, AV = 1V/V RL =32
Ω, f = 1kHz, unless otherwise specified. Limits apply to T
A
= 25˚C.
Symbol
Parameter
Conditions
LM4981
Units
(Limits)
Typical
(Note 6)
Limit
(Note 7)
I
DD
Quiescent Power Supply Current
V
IN = 0V, RL =
710
mA
I
DD
Standby Power Supply Current
2.3
mA
I
SD
Shutdown Current
V
SD = GND
0.1
3.5
µA
V
IH
Logic Input Voltage High
SHDN, SDM, CLOCK, U/D
0.7V
DD
V
V
IL
Logic Input Voltage Low
SHDN, SDM, CLOCK, U/D
0.3V
DD
V
Digital Volume
Input Referred Maximum Gain
12
dB
Input Referred Minimum Gain
–33
dB
Volume Step Size
3
dB
Step Size Error
±0.3
dB
Channel-to-Channel Volume
Tracking Error
All gain settings
0.15
dB
T
WU
Wake Up Time
300
µs
V
OS
Output Offset Voltage
R
L =32
15
mV
P
O
Output Power
THD+N = 1% (max); f = 1kHz,
R
L =16
Ω, one channel
83
mW
THD+N = 1% (max); f = 1kHz,
R
L =32
Ω, one channel
75
mW
THD+N = 1% (max); f = 1kHz,
R
L =16
Ω, (two channels in phase)
40
33
mW (min)
THD+N = 1% (max); f = 1kHz,
R
L =32
Ω, (two channels in phase)
47
43
mW (min)
THD+N
Total Harmonic Distortion
P
O = 60mW, f = 1kHz, RL =16
single channel
0.03
%
P
O = 50mW, f = 1kHz, RL =32
single channel
0.02
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVP-PSine,
f
RIPPLE = 1kHz, Inputs AC GND,
Cl = 1µF
65
dB
V
RIPPLE = 200mVP-PSine,
f
RIPPLE = 10kHz, Inputs AC GND,
Cl = 1µF
50
dB
V
RIPPLE = 200mVP-PSine,
f
RIPPLE = 217Hz
67
dB
OS
Output Noise
A-Weighted Filter
11
µV
www.national.com
4


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