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AFE8220IPZPQ1
Automotive Catalog Dual IF Interface for Digital Radio 100-HTQFP -40 to 85
1FEATURES
DESCRIPTION
AFE8220-Q1
www.ti.com....................................................................................................................................................... SBAS455A–JANUARY 2009–REVISED JULY 2009
DUAL INTERMEDIATE FREQUENCY (IF) ANALOG FRONT END FOR DIGITAL RADIO
2345• Qualified for Automotive Applications •
Flexible Data Interface Optimized for TMS
Familyof Digital Baseband Processors•
Two Intermediate Frequency (IF)
Analog-to-Digital Converters (ADCs) •
Pin-Selectable SPI™ andI2 C™ Control
Interfaces•
Two 12-Bit Auxiliary Digital-to-Analog
Converters (DACs) •
3.3-V/1.8-V Supply (Integrated Regulator
Availableto Optionally Generate 1.8-V Supply)•
IntegratedIF Digital Processing Core TQFP-100 PowerPAD™ Package•
Integrated Circuitry for Third-Overtone Master •
Hybrid Digital (HD) Digital Audio Broadcasting
(DAB) Digital RadioThe AFE8220 implements the intermediate frequency (IF) sampling and processing functionsofa digital radio
receiver system.Itis designedto be used with TI's digital radio baseband processors and AM/FM tuners. The
AFE8220 can alsobe programmed by the baseband processor for usein conventional AM/FM and digital radio.
This unit includes twoIF inputs with associated filtering and digital processing circuitry.
The receive circuit oversamples the radio tunerIF outputto reduce noise and improve dynamic range. TheIF
analog-to-digital converter (ADC) oversamples theIF inputat rates upto 75 MHz. the AFE8220 then digitally
mixes, filters, and decimates the signalto provide in-phase(I) and quadrature (Q) output signalsto the baseband
processor.A clock oscillator circuitis provided that can be used with an appropriate third-overtone crystal and
external tank circuitto generate the sampling clockfor theIF ADCs.
The AFE8220 also includesa real-time clock and associated low-power oscillator circuit. Two auxiliary
digital-to-analog converters (DACs) are included for system control functions. Other features include eight
general-purpose input/output (GPIO) lines and programmable interrupt generators.
The AFE8220is availableina TQFP-100 (14 mm× 14 mm) package and usesa 3.3-V anda 1.8-V power
supply. An onboard voltage regulatoris includedto optionally generate the 1.8-V digital supply for the AFE8220.
ORDERING INFORMATION(1) PACKAGE(2) ORDERABLE PART NUMBER TOP-SIDE MARKING–40°Cto 85°C AFE8220IPZPQ1 AFE8220QHTQFP– PZP Trayof90–40°Cto 105°C AFE8220TPZPQ1 AFE8220QT
(1) Forthe most current package and ordering information, seethe Package Option Addendumatthe endof this document,or seetheTI
web siteat www.ti.com.
(2) Package drawings, thermal data, and symbolizationare availableat www.ti.com/packaging.
