FM STEREO RADIO SIGNAL PROCESSOR WITH RDS
TEA5991 - best performance to lowest cost
KEY FEATURES
• Industry-leadingFMandRDSsensitivity
• Newalgorithmimprovessearchtime(<8seconds)
• Single–endedantennainputoptimizedforheadphonewire
• PilotlessRDSfeatureenablesRDSreception
fromFMmonobroadcasts
• Power-savingmodes
• Command-basedinterfaceforsimplersoftwaredesign
andsystemintegration
• Widetuningrange:70to108MHz,including70-MHz
Chinaband
• Digitalvolumeandbalancecontrol
• Internalautostoreofupto32channels
• Lowsupplyvoltage:2.4to3.6V
• Flexibleinterfaces:I²Cbus,SPIbus
• Smallsize:4x4mmHVQFN,2.56x2.56mmWL-CSP
KEY BENEFITS
• FMbest-in-class:channelseparation,sensitivity,
selectivity,andsound
• Canbeimplementedwithnoexternalcomponents
• Easyhardwareandsoftwareintegration
• Demoboardwithreferencedesignavailabletoenable
smoothintegrationincustomerplatforms
• Completedesigninlessthan15mm²
• Fastersearchtime
• Excellentreceptioninurbanareasduetoimproved
multipathperformance
TARGETED APPLICATIONS
• Mobileandportabledevices
TheTEA5991usesafull-CMOSdesigntodelivertop
performance,alongwiththeindustry’sbestsensitivity,
atthelowestoverallcost.Itusesanewcommandinterface
thatsimplifiessoftwaredevelopmentandsystem
integration,andrequiresonly15mm²ofPCBspace.
Newimprovedsearchalgorithmsdecreasethescan
searchtimeandenablerobustchannelidentification.
www.stericsson.com
©ST-Ericsson,2009,2010-Allrightsreserved.
ST-EricssonandtheST-EricssonlogoaretrademarksoftheST-Ericssongroupofcompanies
orusedunderalicensefromSTMicroelectronicsNVorTelefonaktiebolagetLMEricsson.
Allothernamesarethepropertyoftheirrespectiveowners.
FormoreinformationonST-Ericsson,visitwww.stericsson.com
Order code: FLSTNFMRDS1108
LET’SCREATEIT
TEA5991 block diagram
Analog signal processing Digital signal processing
Tuning control
Analog voltage
regulators
Digital voltage
regulators
Stereo
decoding
RDS
decoding
Sound
processing DAC
AGC
LNA Mixer LPF ADC
Serial communication
command interface
LDO Baseband
or µP
Amplifiers
TheFM+RDSstereoradioIC,TEA5991,isthefollow-ontothe
popularTEA5760,andTEA5766.Thisfull-CMOSradioICsetsa
newstandardinradioperformance,withbetterchannel
separation,industry-leadingsensitivity,veryhighselectivity
andsuperbsound.Inaddition,anewcommand-based
interfacesimplifiessoftwaredevelopmentandmakessystem
integrationeasier.
TheICisavailableinaWL-CSPpackage.
Acompleteradiocanbeimplementedwithoutexternal
components.Addingtwosmalldecouplingcapacitorsto
thedesignimprovesreceptionandsoundquality.Evenwith
the2extracapacitors,thedesignisverysmall,requiringless
than15mm²ofPCBspace.Addingapre-selectfilterintheFM
antennapathcanenhancereceptionqualityevenfurther.
TheTEA5991requiresnoalignmentandusesalowsupply
voltage(2.4to3.6V).Thesingle-endedantennainputis
optimizedforaheadphonewire.Theradiooffersawidetuning
range(70to108MHz,includingthe70MHzChinaband)and
usesatuninggridof50,100and200kHz.Ithasaveryreliable
andfastautosearchwithaninternalautostoreofupto
32channels,anditsupportsdynamicadjacentchannel
suppressionforbetterreceptionquality.
Tomakedesign-inmoreflexible,theTEA5991supports
theI²CandSPIbuses(3-or4-wireformat).Adigitally
controlledalgorithmsupportsseamlessco-existence
withGSM,Bluetooth,Wi-FiandWiMAX.Tosavepower,
thereisastandbymodeforfastrestartandapower-down
modeforverylow-powermode.
Package size WL-CSP/UK: 2.56 x 2.56 x 0.6 mm
Required number of external components None
Required PCB area < 15 mm² for WL-CSP
Current consumption (typical) 22 mA
Channel separation 48 dB
Ultimate S/N (mono typical) 60 dB
FM sensitivity (at 26 dB S/N) 1.2 VEMF
RDS sensitivity (≥ 95 %, 2000 blocks) 12 VEMF
Audio THD (mono) 0.2 %
Typical supply voltage 2.7 V
Reference clock frequency 32.768 kHz ± 1024 Hz
Interface bus I2C-bus, SPI