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Analog Front-End. AFE8220-Q1 Datasheet

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Analog Front-End. AFE8220-Q1 Datasheet






AFE8220-Q1 Front-End. Datasheet pdf. Equivalent




AFE8220-Q1 Front-End. Datasheet pdf. Equivalent





Part

AFE8220-Q1

Description

Analog Front-End



Feature


AFE8220-Q1 www.ti.com.................. ....................................... ....................................... ....................................... ................ SBAS455A – JANUARY 2 009 – REVISED JULY 2009 DUAL INTERMED IATE FREQUENCY (IF) ANALOG FRONT END FO R DIGITAL RADIO FEATURES 1 •2345 Qua lified for Automotive Applications • Two Intermediate Frequency.
Manufacture

Texas Instruments

Datasheet
Download AFE8220-Q1 Datasheet


Texas Instruments AFE8220-Q1

AFE8220-Q1; (IF) Analog-to-Digital Converters (ADCs ) • Two 12-Bit Auxiliary Digital-to-A nalog Converters (DACs) • Integrated IF Digital Processing Core • Integrat ed Circuitry for Third-Overtone Master Clock Oscillator • Wakeup Circuit/Rea l-Time Clock With Separate Crystal Osci llator • Flexible Data Interface Opt imized for TMS Family of Digital Baseba nd Processors • Pin-Selectab.


Texas Instruments AFE8220-Q1

le SPI™ and I2C™ Control Interfaces • 3.3-V/1.8-V Supply (Integrated Regu lator Available to Optionally Generate 1.8-V Supply) • TQFP-100 PowerPAD™ Package APPLICATIONS • IF-Sampled AM/ FM Radio • Hybrid Digital (HD) Digita l Audio Broadcasting (DAB) Digital Radi o DESCRIPTION The AFE8220 implements t he intermediate frequency (IF) sampling and processing functions of a d.


Texas Instruments AFE8220-Q1

igital radio receiver system. It is desi gned to be used with TI's digital radio baseband processors and AM/FM tuners. The AFE8220 can also be programmed by t he baseband processor for use in conven tional AM/FM and digital radio. This un it includes two IF inputs with associat ed filtering and digital processing cir cuitry. The receive circuit oversamples the radio tuner I.

Part

AFE8220-Q1

Description

Analog Front-End



Feature


AFE8220-Q1 www.ti.com.................. ....................................... ....................................... ....................................... ................ SBAS455A – JANUARY 2 009 – REVISED JULY 2009 DUAL INTERMED IATE FREQUENCY (IF) ANALOG FRONT END FO R DIGITAL RADIO FEATURES 1 •2345 Qua lified for Automotive Applications • Two Intermediate Frequency.
Manufacture

Texas Instruments

Datasheet
Download AFE8220-Q1 Datasheet




 AFE8220-Q1
AFE8220-Q1
www.ti.com....................................................................................................................................................... SBAS455A – JANUARY 2009 – REVISED JULY 2009
DUAL INTERMEDIATE FREQUENCY (IF) ANALOG FRONT END FOR DIGITAL RADIO
FEATURES
1
2345 Qualified for Automotive Applications
Two Intermediate Frequency (IF)
Analog-to-Digital Converters (ADCs)
Two 12-Bit Auxiliary Digital-to-Analog
Converters (DACs)
Integrated IF Digital Processing Core
Integrated Circuitry for Third-Overtone Master
Clock Oscillator
Wakeup Circuit/Real-Time Clock With Separate
Crystal Oscillator
Flexible Data Interface Optimized for TMS
Family of Digital Baseband Processors
Pin-Selectable SPI™ and I2C™ Control
Interfaces
3.3-V/1.8-V Supply (Integrated Regulator
Available to Optionally Generate 1.8-V Supply)
TQFP-100 PowerPAD™ Package
APPLICATIONS
IF-Sampled AM/FM Radio
Hybrid Digital (HD) Digital Audio Broadcasting
(DAB) Digital Radio
DESCRIPTION
The AFE8220 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
AFE8220 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.
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 75 MHz. the AFE8220 then digitally
mixes, filters, and decimates the signal to provide in-phase (I) and quadrature (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.
The AFE8220 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. Other features include eight
general-purpose input/output (GPIO) lines and programmable interrupt generators.
The AFE8220 is available in a TQFP-100 (14 mm × 14 mm) package and uses a 3.3-V and a 1.8-V power
supply. An onboard voltage regulator is included to optionally generate the 1.8-V digital supply for the AFE8220.
TA
–40°C to 85°C
–40°C to 105°C
ORDERING INFORMATION(1)
PACKAGE (2)
ORDERABLE PART NUMBER
HTQFP – PZP
Tray of 90
AFE8220IPZPQ1
AFE8220TPZPQ1
TOP-SIDE MARKING
AFE8220Q
AFE8220QT
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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.
PowerPAD is a trademark of Texas Instruments.
2
SPI is a trademark of Motorola, Inc.
3
I2C is a trademark of NXP Semiconductors.
4
All other trademarks are the property of their respective owners.
5
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 © 2009, Texas Instruments Incorporated




 AFE8220-Q1
AFE8220-Q1
SBAS455A – JANUARY 2009 – REVISED JULY 2009....................................................................................................................................................... www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range, unless otherwise noted.(1)
Supply voltage range
Voltage between
Digital inputs(2)
Digital data output
Operating free-air temperature range, TA
Operating junction temperature range, TJ
Storage temperature range, Tstg
AVDD
DVDD
IOVDD
AGND to DGND
AVDD to DVDD
AFE8220I
AFE8220T
AFE8220T
–0.5 V to 3.6 V
–0.5 V to 3.6 V
–0.5 V to 3.6 V
–0.3 V to 0.5 V
–3.3 V to 3.3 V
–0.3 V to DVDD + 0.3 V
–0.3 V to DVDD + 0.3 V
–40°C to 85°C
–40°C to 105°C
–40°C to 125°C
–55°C to 125°C
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating
conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Measured with respect to DGND.
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
AVDD
DVDD
IOVDD
VIH
VIL
TA
TJ
Analog supply voltage
Digital supply voltage
Output driver supply voltage
Input common-mode voltage
Differential input peak-to-peak voltage range
High-level digital input voltage
Low-level digital input voltage
Operating free-air temperature
Operating junction temperature
AFE8220I
AFE8220T
AFE8220T
MIN
3.14
1.6
1.6
0.7 × IOVDD
NOM
3.3
1.8
VCM
2
–40
–40
–40
MAX
3.6
2.0
3.6
0.25 × IOVDD
85
105
125
UNIT
V
V
V
V
V
V
V
°C
°C
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): AFE8220-Q1




 AFE8220-Q1
AFE8220-Q1
www.ti.com....................................................................................................................................................... SBAS455A – JANUARY 2009 – REVISED JULY 2009
POWER SUPPLY SPECIFICATIONS
TA = 25°C, AVDD = IOVDD = 3.3 V, DVDD = 1.8 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
Power Consumption
Analog supply current
Digital supply current
REG_ENB disabled
Digital I/O supply current
REG_ENB disabled
REG_ENB enabled
Power dissipation
REG_ENB disabled
REG_ENB enabled
Reduced-Power Modes
Software power-down
Control register address 1 set to 0x0000
Hardware power-down
PWD enabled
MIN TYP MAX UNIT
130 155 mA
65 85 mA
35 50 mA
105 125 mA
660 mW
725 mW
100 mW
50 µW
IF ADC SPECIFICATIONS
TA = 25°C, AVDD = IOVDD = 3.3 V, DVDD = 1.8 V, fS = 75 MHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
DC Accuracy
Input impedance
Offset error
Gain error
Full-scale input level
Peak differential, 1x gain
Peak differential, 2x gain
Power Supply
Power-supply rejection ratio, PSRR
AVDD = 3.15 VDC to 3.6 VDC
References
Positive reference
REFP
Negative reference
REFN
Common-mode voltage
VCM
AC Performance
Input sample rate
Signal-to-noise ratio within a
limited passband
Input 10.7 MHz, –1 dBFS, in 3-kHz passband
SNR
Input 10.7 MHz, –1 dBFS, in 100-kHz passband
Third-order intermodulation distortion
–7-dB signals at 10.656 MHz and 10.729 MHz
–10-dB signals at 10.656 MHz and 10.729 MHz
Spurious-free dynamic range
SFDR –1-dB input at 10.7 MHz, 100-kHz passband
MIN TYP MAX UNIT
2 k
3.0 mV
1.0 %FS
2.0 V
1.0 V
72 dB
1.9 2.0 2.1 V
0.9 1.0 1.1 V
1.4 1.5 1.6 V
75
105
85 90
91
94
88 96
MHz
dBc
dB
dBc
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): AFE8220-Q1
Submit Documentation Feedback
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