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LM49450

更新时间： 2024-02-11 17:42:51
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
42页 1037K
描述
Boomer I2S Input, 2.5W/Channel, Low EMI, Stereo, Class D Audio Sub-System with Ground Referenced Headphone Amplifier, 3D Enhancement, and Headphone Sense

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LM49450 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：HVQCCN, LCC28,.2SQ,20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：8 weeks
风险等级：5.48商用集成电路类型：AUDIO AMPLIFIER
JESD-30 代码：S-PQCC-N32JESD-609代码：e3
长度：5 mm湿度敏感等级：1
功能数量：2端子数量：28
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC28,.2SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
电源：3.6/5 V认证状态：Not Qualified
筛选级别：AEC-Q100座面最大高度：0.8 mm
子类别：Audio/Video Amplifiers最大供电电压 (Vsup)：5.5 V
表面贴装：YES温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

LM49450 数据手册

 浏览型号LM49450的Datasheet PDF文件第5页浏览型号LM49450的Datasheet PDF文件第6页浏览型号LM49450的Datasheet PDF文件第7页浏览型号LM49450的Datasheet PDF文件第9页浏览型号LM49450的Datasheet PDF文件第10页浏览型号LM49450的Datasheet PDF文件第11页 
LM49450  
SNAS440D –FEBRUARY 2008–REVISED MAY 2013  
www.ti.com  
Electrical Characteristics VDD = LSVDD = 5.0V(1)(2) (continued)  
The following specifications apply for Headphone: AV = 0dB, RL(LS) = 8Ω, RL(HP) = 32Ω, f = 1kHz, unless otherwise specified.  
Limits apply for TA = 25°C.  
LM49450  
Typical(3)  
Units  
(Limits)  
Symbol  
Parameter  
Conditions  
Limit(4)  
PO = 500mW, f = 1kHz, RL = 8Ω  
DAC Active,  
Line Inputs Active  
74  
79  
dB  
dB  
Xtalk  
Crosstalk  
PO = 500mW, f = 10kHz, RL = 8Ω  
DAC Active,  
Line Inputs Active  
60  
60  
dB  
dB  
PO = 500mW, f = 1kHz, A-weighted  
DAC Active, Internal Reference  
DAC Active, External Reference  
Line Inputs Active  
88  
89  
98  
dB  
dB  
dB  
SNR  
AV  
Signal to Noise Ratio  
Maximum Gain Setting, Line Inputs  
Active  
22.5  
24.2  
dB (min)  
dB (max)  
24.2  
Digitally Controlled Gain Level  
Mute Attenuation  
Minimum Gain Setting, Line Inputs  
Active  
–49  
–46  
dB (min)  
dB (max)  
–48  
–92  
0.3  
Mute  
Line Inputs Active  
dB  
Channel-to-Channel Gain  
Matching  
ΔACH-CH  
dB  
Input Referred, A-weighted  
DAC Active, Internal Reference  
DAC Active, External Reference  
Line Inputs Active  
60  
85  
40  
27  
1
μV  
μV  
μV  
ms  
ms  
εOS  
Output Noise  
tON  
Turn-On Time  
Turn-Off Time  
tOFF  
Timing Characteristics(1)(2)  
The following specifications apply for Headphone: AV = 0dB, RL(LS) = 8Ω, RL(HP) = 32Ω, f = 1kHz, unless otherwise specified.  
Limits apply for TA = 25°C.  
LM49450  
Typical(3)  
Units  
(Limits)  
Symbol  
Parameter  
Conditions  
Limit(4)  
AUDIO INTERFACE TIMING  
tMCLKL  
tMCLKH  
tMCLKY  
tBCLKR  
tBCLKCF  
tBCLKDS  
MCLK Pulse Width Low  
MCLK Pulse Width High  
MCLK Period  
16  
16  
32  
3
ns (min)  
ns (min)  
ns (min)  
ns (max)  
ns (max)  
%
BCLK Rise Time  
BCLK Fall Time  
3
BCLK Duty Cycle  
50  
LRC Propagation Delay from  
BCLK falling edge  
ns (max)  
tDL  
10  
10  
DATA Setup Time to BCLK Rising  
Edge  
ns (min)  
tDST  
(1) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as  
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and  
are not ensured.  
(2) RL is a resistive load in series with two inductors to simulate an actual speaker load. For RL = 8Ω, the load is 15µH + 8Ω +15µH. For RL  
= 4Ω, the load is 15µH + 4Ω + 15µH.  
(3) Typical values represent most likely parametric norms at TA = +25ºC, and at the Recommended Operation Conditions at the time of  
product characterization and are not ensured.  
(4) Datasheet min/max specification limits are specified by test or statistical analysis.  
8
Submit Documentation Feedback  
Copyright © 2008–2013, Texas Instruments Incorporated  
Product Folder Links: LM49450  
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