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参数资料
| 型号： | LM4681SQ |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and I2C/SPI Volume Control |
| 中文描述： | 10 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48 |
| 封装： | LLP-48 |
| 文件页数： | 15/19页 |
| 文件大小： | 983K |
| 代理商： | LM4681SQ |
Electrical Characteristics (Notes 1, 2, 7) (Continued)
The following specifications apply for V
DD = 12V, I
2CV
DD = 5V, RL =8
, LC filter values as shown in Figure 1, unless other-
wise specified. Limits apply for T
A = 25C.
Symbol
Parameter
Conditions
LM4681
Units
Typical
Limit
PSRR
Power Supply Rejection Ratio
V
RIPPLE = 200mVP-P,
C
BYPASS1 = 10F,
input referred
f = 50Hz
f = 60Hz
f = 100Hz
f = 120Hz
f = 1kHz
82
84
92
95
dB
Headphone Amplifiers
P
O
Maximum Power Output Per
Channel
THD+N
≤ 1%, R
L =32
,
f
IN = 1kHz
94
70
mW
(min)
THD+N
Distortion + Noise
P
O = 20mW, RL =32
,
f
IN = 1kHz
0.02
%
V
NOISE
Output Noise Voltage, RMS
R
IN =50
,C
IN = 1F,
BW = 20Hz to 20kHz, R
L =32
A-weighted, Input referred
22
V
PSRR
Power Supply Rejection Ratio
(Referred to Input)
200mV, 1kHz, V
IN =0,RL =32
77
dB
Electrical Characteristics for Volume Control (Notes 1, 2)
The following specifications apply for V
DD = 12V. Limits apply for TA = 25C.
Symbol
Parameter
Conditions
LM4681
Units
(Limits )
Typical
Limit
C
RANGE
Gain Range
Digital Code = Full Scale, No Load
Power Amplifier
Headphone Amplifier
30
13
29
12
dB (min)
Digital Code = +1LSB, No Load
Power Amplifier
Headphone Amplifier
–48
–65
–46
–63
dB (min)
A
M
Mute Gain
Digital Code = 0, No Load
Power Amplifier
Headphone Amplifier
–76
–74
dB (max)
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. “Operating Ratings” indicate conditions for which the device
is functional, but do not guarantee specific performance limits. “Electrical Characteristics” state DC and AC electrical specifications under particular test conditions
which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where
no limit is given, however, the typical value is a good indication of device performance.
Note 3: For operating at case temperatures above 25C, the device must be derated based on a 150C maximum junction temperature and a thermal resistance
of
θJA = 80C/W (junction to ambient).
Note 4: Human body model, 100pF discharged through a 1.5k
resistor.
Note 5: Machine Model 220pF 240pF discharged through all pins.
Note 6: The operating junction temperature maximum is 150C.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8: Typicals are measured at 25C and represent the parametric norm.
LM4681
www.national.com
5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM4681SQ/NOPB | 功能描述:IC AMP AUDIO PWR 10W STER 48LLP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4681SQX/NOPB | 功能描述:IC AMP AUDIO PWR 10W STER 48LLP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:Boomer® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| LM4682 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and DC Volume Control |
| LM4682B E WAF | 制造商:Texas Instruments 功能描述: |
| LM4682SQ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:10 Watt Stereo CLASS D Audio Power Amplifier with Stereo Headphone Amplifier and DC Volume Control |
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