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AFE8221RFP

更新时间： 2024-11-10 03:18:07
品牌 Logo 应用领域
德州仪器 - TI 消费电路商用集成电路
页数 文件大小 规格书
48页 535K
描述
Dual IF Analog Front-End for Digital Radio

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中文翻译

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AFE8221RFP 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFP
包装说明：TQFP-144针数：144
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.79Is Samacsys：N
其他特性：ALSO REQUIRES 1.6V TO 2V DIGITAL SUPPLY商用集成电路类型：CONSUMER CIRCUIT
JESD-30 代码：S-PQFP-G144JESD-609代码：e4
湿度敏感等级：3功能数量：1
端子数量：144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：QFP封装形状：SQUARE
封装形式：FLATPACK峰值回流温度（摄氏度）：260
认证状态：Not Qualified最大供电电压 (Vsup)：3.6 V
最小供电电压 (Vsup)：3.14 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)
端子形式：GULL WING端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

AFE8221RFP 数据手册

 浏览型号AFE8221RFP的Datasheet PDF文件第2页浏览型号AFE8221RFP的Datasheet PDF文件第3页浏览型号AFE8221RFP的Datasheet PDF文件第4页浏览型号AFE8221RFP的Datasheet PDF文件第5页浏览型号AFE8221RFP的Datasheet PDF文件第6页浏览型号AFE8221RFP的Datasheet PDF文件第7页 
AFE8221  
www.ti.com  
SBAS394A–APRIL 2007–REVISED MARCH 2008  
Dual IF Analog Front-End for Digital Radio  
1
FEATURES  
DESCRIPTION  
2345  
•
Two IF ADCs  
The AFE8221 implements the intermediate frequency  
(IF) sampling and processing functions of a digital  
radio receiver system. It is designed to be used with  
TI's digital radio baseband processors and AM/FM  
tuners. The AFE8221 can also be programmed by  
the baseband processor for use in conventional  
AM/FM and digital radio. This unit includes two IF  
inputs with associated filtering and digital processing  
circuitry.  
•
•
Two 12-Bit Auxiliary DACs  
8-Bit Auxiliary ADCs with Four-Channel Input  
MUX  
•
•
Integrated IF Digital Processing Core  
Integrated Circuitry for Third-Overtone Master  
Clock Oscillator  
•
•
•
•
•
Wakeup Circuit/Real-Time Clock with Separate  
Crystal Oscillator  
The receive circuit oversamples the radio tuner IF  
output to reduce noise and improve dynamic range.  
The IF analog-to-digital converter (ADC) oversamples  
the IF input at rates up to 75MHz. The AFE8221 then  
digitally mixes, filters, and decimates the signal to  
provide I and Q output signals to the baseband  
processor. A clock oscillator circuit is provided that  
can be used with an appropriate third-overtone crystal  
and external tank circuit to generate the sampling  
clock for the IF ADCs.  
Flexible Data Interface Optimized for TMS  
Family of Digital Baseband Processors  
Pin-Selectable SPI™ and I2C™ Control  
Interfaces  
3.3V/1.8V Supply (Integrated Regulator  
Available to Optionally Generate 1.8V Supply)  
TQFP-144, PowerPAD™ Package  
The AFE8221 also includes a real-time clock and  
associated low-power oscillator circuit. Two auxiliary  
digital-to-analog converters (DACs) are included for  
system control functions. An 8-bit auxiliary ADC and  
input multiplexer (MUX) can be used for system  
diagnostic functions. Other features include 12  
APPLICATIONS  
•
IF-Sampled AM/FM Radio  
•
HD, DAB Digital Radio  
general-purpose  
input/output  
(GPIO)  
lines,  
programmable interrupt generators, and an I2C  
master for communication between the AFE and the  
tuner(s).  
The AFE8221 is available in a TQFP-144 (20mm ×  
20mm) package and uses a 3.3V and a 1.8V power  
supply. An onboard voltage regulator is included to  
optionally generate the 1.8V digital supply for the  
AFE8221.  
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.  
2
3
4
5
PowerPAD is a trademark of Texas Instruments.  
SPI is a trademark of Motorola, Inc.  
I2C is a trademark of NXP Semiconductors.  
All other trademarks are the property of their respective owners.  
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 © 2007–2008, Texas Instruments Incorporated  
1234567...48

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