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LM4921ITL/NOPB

更新时间： 2024-02-24 17:57:35
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德州仪器 - TI 消费电路商用集成电路
页数 文件大小 规格书
26页 1083K
描述
LM4921 Low Voltage I2S 16-Bit Stereo DAC

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LM4921ITL/NOPB 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：BGA
包装说明：VFBGA, BGA20,4X5,20针数：20
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.33.00.01风险等级：5.04
Is Samacsys：N商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：R-XBGA-B20JESD-609代码：e1
长度：2.72 mm湿度敏感等级：1
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：UNSPECIFIED封装代码：VFBGA
封装等效代码：BGA20,4X5,20封装形状：RECTANGULAR
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
电源：3,3/5 V认证状态：Not Qualified
座面最大高度：0.675 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)：2.6 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.2 mmBase Number Matches：1

LM4921ITL/NOPB 数据手册

 浏览型号LM4921ITL/NOPB的Datasheet PDF文件第2页浏览型号LM4921ITL/NOPB的Datasheet PDF文件第3页浏览型号LM4921ITL/NOPB的Datasheet PDF文件第4页浏览型号LM4921ITL/NOPB的Datasheet PDF文件第5页浏览型号LM4921ITL/NOPB的Datasheet PDF文件第6页浏览型号LM4921ITL/NOPB的Datasheet PDF文件第7页 
LM4921  
www.ti.com  
SNAS178E –JULY 2003–REVISED MAY 2013  
LM4921  
Low Voltage I2S 16-Bit Stereo DAC with Stereo  
Headphone Power Amplifiers and Volume Control  
Check for Samples: LM4921  
1
FEATURES  
APPLICATIONS  
2
•
•
•
•
•
16-Bit Resolution Stereo DAC  
•
•
•
Mobile Phones  
PDAs  
I2S Digital Audio Data Serial Interface  
SPI Serial Interface (Control Register)  
Volume Control (32 steps; 1.5 dB Increments)  
Portable Electronic Devices  
DESCRIPTION  
Up to 50mW/Channel Stereo Headphone  
Amplifier  
The LM4921 combines a 16-bit resolution stereo I2S  
input digital-to-analog converter (DAC) with a stereo  
headphone audio power amplifier. It is primarily  
designed for demanding applications in mobile  
phones and other portable communication device  
applications. The LM4921 features an I2S serial  
interface for the digital audio information and a 16-bit  
SPI serial interface for internal register control and  
communication. With AVDD and DVDD = 3.0VDC and  
driving a 32Ω single-ended load to a 26mWRMS  
output level the distortion (THD+N) of the LM4921 will  
be less than 0.5%. The LM4921 also features a  
programmable 32-step digital volume control  
accessed through an SPI interface.  
•
Zero Crossing Detection for Silent Attenuation  
Steps  
•
•
2.6VDC to 5.0VDC Digital Supply Voltage Range  
2.6VD(C1)to 5.5VDC Analog Supply Voltage Range  
(See  
)
•
•
Unity-Gain Stable Headphone Amplifiers  
Available in the 20-bump DSBGA Package  
KEY SPECIFICATIONS  
•
PSRR at 217Hz, A/DVDD = 3V, (See Figure 1):  
52dB (typ)  
Boomer audio power amplifiers were designed  
specifically to provide high quality output power with a  
minimal amount of external components. It is,  
therefore, ideally suited for mobile phone and other  
low voltage applications where minimal power  
consumption is a primary requirement.  
•
POUT at AVDD = 3.0V, 32Ω  
–
–
< 0.05% THD: 13mW (typ)  
< 0.05% THD: 26mW (typ)  
•
•
Supply Voltage Range  
–
–
DVDD: 2,6V to 5.0V  
AVDD: (See (1)) 2.6V to 5.5V  
The LM4921 features a low-power consumption  
shutdown mode, and also has an internal thermal  
shutdown protection mechanism.  
Shutdown Current: 1µA (typ)  
(1) Best operation is achieved by maintaining 3.0V ≤ AVDD ≤ 5.0V  
and 3.0V ≤ DVDD ≤ 5.0V.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
All trademarks are the property of their respective owners.  
2
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2003–2013, Texas Instruments Incorporated  
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