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參數(shù)資料
| 型號(hào)： | LM4981 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | CHOKE, COM/ASYM MODE 2X0.7MH 4A |
| 中文描述： | 地為參考，80mW立體聲耳機(jī)放大器，具有數(shù)字音量控制 |
| 文件頁數(shù)： | 4/18頁 |
| 文件大?。?/td> | 1193K |
| 代理商： | LM4981 |
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
Storage Temperature
Input Voltage
Power Dissipation(Note 3)
ESD Susceptibility (Note 4)
4.5V
65C to +150C
0.3V to V
DD
+0.3V
Internally Limited
2500V
ESD Susceptibility (Note 5)
Junction Temperature
250V
150C
Operating Ratings
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage (V
DD
)
40C
≤
T
A
≤
85C
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 R
L
= 32
, f = 1kHz, unless otherwise specified. Limits apply to T
A
= 25C.
Symbol
Parameter
Conditions
LM4981
Units
(Limits)
Typical
(Note 6)
7
2.3
0.1
Limit
(Note 7)
10
I
DD
I
DD
I
SD
V
IH
V
IL
Quiescent Power Supply Current
Standby Power Supply Current
Shutdown Current
Logic Input Voltage High
Logic Input Voltage Low
V
IN
= 0V, R
L
=
∞
mA
mA
μA
V
V
dB
dB
dB
dB
dB
V
SD
= GND
SHDN, SDM, CLOCK, U/D
SHDN, SDM, CLOCK, U/D
Input Referred Maximum Gain
Input Referred Minimum Gain
3.5
0.7V
DD
0.3V
DD
Digital Volume
12
–33
3
±
0.3
0.15
Volume Step Size
Step Size Error
Channel-to-Channel Volume
Tracking Error
Wake Up Time
Output Offset Voltage
All gain settings
T
WU
V
OS
300
1
μs
mV
R
L
= 32
THD+N = 1% (max); f = 1kHz,
R
L
= 16
, one channel
THD+N = 1% (max); f = 1kHz,
R
L
= 32
, one channel
THD+N = 1% (max); f = 1kHz,
R
L
= 16
, (two channels in phase)
THD+N = 1% (max); f = 1kHz,
R
L
= 32
, (two channels in phase)
P
O
= 60mW, f = 1kHz, R
L
= 16
single channel
P
O
= 50mW, f = 1kHz, R
L
= 32
single channel
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE
= 1kHz, Inputs AC GND,
Cl = 1μF
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE
= 10kHz, Inputs AC GND,
Cl = 1μF
V
RIPPLE
= 200mV
P-P
Sine,
f
RIPPLE
= 217Hz
A-Weighted Filter
5
P
O
Output Power
83
mW
75
mW
40
33
mW (min)
47
43
mW (min)
THD+N
Total Harmonic Distortion
0.03
%
0.02
PSRR
Power Supply Rejection Ratio
65
dB
50
dB
67
dB
∈
OS
Output Noise
11
μV
L
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| LM4981SQ/NOPB | 功能描述:IC AMP AUDIO .083W STER AB 16LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| LM4981SQX/NOPB | 功能描述:IC AMP AUDIO .083W STER AB 16LLP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:Boomer® 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
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