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LM4991

更新时间： 2024-02-10 05:31:52
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
22页 989K
描述
3W Audio Power Amplifier with Shutdown Mode

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LM4991 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP8,.25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：0.86
标称带宽：20 kHz商用集成电路类型：AUDIO AMPLIFIER
谐波失真：1%JESD-30 代码：R-PDSO-G8
JESD-609代码：e3长度：4.9 mm
湿度敏感等级：1信道数量：1
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
标称输出功率：1.3 W封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260电源：2.6/5 V
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Audio/Video Amplifiers最大压摆率：10 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：2.2 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

LM4991 数据手册

 浏览型号LM4991的Datasheet PDF文件第1页浏览型号LM4991的Datasheet PDF文件第2页浏览型号LM4991的Datasheet PDF文件第4页浏览型号LM4991的Datasheet PDF文件第5页浏览型号LM4991的Datasheet PDF文件第6页浏览型号LM4991的Datasheet PDF文件第7页 
LM4991  
www.ti.com  
SNAS217A –MAY 2004–REVISED APRIL 2013  
(1) (2)  
Electrical Characteristics VDD = 5V  
The following specifications apply for VDD = 5V and RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.  
LM4991  
Parameter  
Test Conditions  
Units  
(Limits)  
Typ(3)  
Limit(4)  
Quiescent Power Supply Current VIN = 0V, no Load  
3
4
7
IDD  
mA (max)  
VIN = 0V, RL = 8Ω  
10  
2.0  
ISD  
Shutdown Current  
Shutdown Voltage  
VSHUTDOWN = VDD  
0.1  
1.5  
1.3  
5
µA (max)  
V
VSDIH  
VSDIL  
VOS  
V
Output Offset Voltage  
35  
mV (max)  
W (min)  
(5)  
(5)  
THD = 1% (max), f = 1kHz  
THD+N = 10%, f = 1kHz  
LM4991LD, RL = 3Ω  
LM4991LD, RL = 4Ω  
LM4991, RL = 8Ω  
2.38  
2.1  
1.3  
3
0.9  
Po  
Output Power  
(5)  
(5)  
LM4991LD, RL = 3Ω  
LM4991LD, RL = 4Ω  
LM4991, RL = 8Ω  
2.5  
1.5  
0.2  
W
THD+N  
PSRR  
Total Harmonic Distortion+Noise PO = 0.5W, f = 1kHz  
%
Power Supply Rejection Ratio  
VRIPPLE = 200mV sine p-p,  
Input terminated with 10Ω,  
f = 1kHz  
64  
55  
dB (min)  
(1) 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 ensure specific performance limits. Electrical Characteristics VDD= 5V state DC and AC  
electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within  
the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good  
indication of device performance.  
(2) All voltages are measured with respect to the ground pin, unless otherwise specified.  
(3) Typicals are specified at 25°C and represent the parametric norm.  
(4) Limits are ensured to AOQL (Average Outgoing Quality Level).  
(5) When driving 3Ω or 4Ω loads from a 5V supply, the LM4991LD must be mounted to a circuit board.  
(1) (2)  
Electrical Characteristics VDD = 3V  
The following specifications apply for VDD = 3V and RL = 8Ω unless otherwise specified. Limits apply for TA = 25°C.  
LM4991  
Parameter  
Test Conditions  
Units  
(Limits)  
Typ(3)  
Limit(4)  
IDD  
Quiescent Power Supply  
Current  
VIN = 0V, no Load  
VIN = 0V, RL = 8Ω  
VSHUTDOWN = VDD  
3
4
7
7
mA  
(max)  
ISD  
Shutdown Current  
0.1  
1.1  
0.9  
5
2.0  
µA (max)  
VSDIH  
VSDIL  
VOS  
Shutdown Voltage Input High  
Shutdown Voltage Input Low  
Output Offset Voltage  
V
V
35  
mV  
(max)  
Po  
Output Power  
THD = 1% (max), f = 1kHz  
PO = 0.25W, f = 1kHz  
RL = 4Ω  
RL = 8Ω  
600  
425  
mW  
%
Total Harmonic  
Distortion+Noise  
THD+N  
0.1  
(1) 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 ensure specific performance limits. Electrical Characteristics VDD= 5V state DC and AC  
electrical specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within  
the Operating Ratings. Specifications are not ensure for parameters where no limit is given, however, the typical value is a good  
indication of device performance.  
(2) All voltages are measured with respect to the ground pin, unless otherwise specified.  
(3) Typicals are specified at 25°C and represent the parametric norm.  
(4) Limits are ensured to AOQL (Average Outgoing Quality Level).  
Copyright © 2004–2013, Texas Instruments Incorporated  
Submit Documentation Feedback  
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