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參數(shù)資料
| 型號(hào)： | AFEDRI8201PFBT |
| 英文描述： | IF ADC Front End for AM/FM and HD Radios |
| 中文描述： | 如果ADC前端的AM / FM和HD收音機(jī) |
| 文件頁數(shù)： | 1/22頁 |
| 文件大?。?/td> | 240K |
| 代理商： | AFEDRI8201PFBT |
FEATURES
Interfaces To Texas Instruments DRIx50 HD
Radio Baseband Processors
12-Bit, 80MSPS ADC Reduces Noise and
Improves Sensitivity
Typical SNR of 102dB in 3kHz Bandwidth
Programmable Input Range For Optimum
Tuner Dynamic Range
Integrated Digital Downconverter (DDC)
Quadrature Mixer, NCO, CIC Decimation
Filter, And FIR Filters
Mixer: 32-Bit Frequency and Phase
Decimation Ratio: 32 to 4096
User-Programmable FIR Filters with 16-Bit
Coefficients
12-Bit Auxiliary DAC
Code Composer Module for Easy Software
Generation
SPI
Control Interface
APPLICATIONS
AM/FM and HD Radio Receivers
IF Receive Channels
Software Radios
Narrowband Receivers
DESCRIPTION
The AFEDRI8201 implements the receive channel analog
functions required for intermediate-frequency (IF)
sampled AM/FM and HD digital radio receivers. It is
designed to be used with TI’s DRIx50 digital baseband
processor. The AFEDRI8201 is programmed by the
DRIx50 for use in AM/FM and HD radio. The AFEDRI8201
oversamples the radio tuner IF output at speeds of up to
80MHz to reduce noise and improve dynamic range. The
radio tuner output IF is typically 10.7MHz for AM or FM as
well as 450kHz or 455kHz for AM, as desired. The
AFEDRI8201 then mixes, filters, and decimates the signal
to provide baseband I and Q output signals to the digital
baseband processor. The AFEDRI8201 also includes a
general-purpose 12-bit control digital-to-analog converter
(DAC) to provide a gain control signal or other analog
feedback to the tuner.
The DRIx50 digital baseband device writes control register
data as well as decimation filter coefficients to the
AFEDRI8201 through the industry-standard SPI control
interface. The baseband output signals are transported to
the DRIx50 through a general-purpose, high-speed serial
interface (TI’s Buffered Serial Ports, McBSP).
This unit uses 3.3V analog and 1.8V digital power
supplies. Typical power dissipation is 490mW. The digital
I/O lines can be powered by a 3.3V supply.
12Bit
Pipeline
ADC
Auxiliary
DAC
Voltage
Reference
AUX
IFM
IFP
Quadrature
Mixer
NCO
CIC Filter
FIR Filter 1
FIR Filter 2A
2
D
DOUT0
DOUT1
DFSO
DCLK
DIN
DFSI
FIR Filter 2B
N
2
2
REFM VCM REFP
VGB
SPI Control
Interface
SCK
MOSI MISO
CS
Timing
Generator
PWD
SYNC RESET
Clock
Interface
MCLK
MCLKB
!
!
AFEDRI8201
SBWS017F SEPTEMBER 2003 REVISED AUGUST 2005
IF ADC Front End for AM/FM and HD Radios
www.ti.com
Copyright
20032005, Texas Instruments Incorporated
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.
SPI is a trademark of Motorola, Inc. All other trademarks are the property of their respective owners.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AFEDRI8201PFBTG4 | 功能描述:射頻前端 IF Sampling Front End RoHS:否 制造商:Skyworks Solutions, Inc. 類型: 工作頻率:2.4 GHz, 5 GHz 最大數(shù)據(jù)速率:54 Mbps 噪聲系數(shù): 工作電源電壓:3.3 V 電源電流:180 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-32 |
| AFEM-7413-SG1 | 功能描述:IC FRONT END 制造商:broadcom limited 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1 |
| AFEM-7413-TR1 | 功能描述:IC FRONT END 制造商:broadcom limited 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1,000 |
| AFEM-7750-TR1 | 制造商:Avago Technologies 功能描述:PASSKEY-2: CDMA CELL FEM |
| AFEM-8007-BLK | 功能描述:IC FRONT END 制造商:broadcom limited 系列:* 零件狀態(tài):上次購買時(shí)間 標(biāo)準(zhǔn)包裝:1 |
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