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Low-IF tuner IC for dual-band DAB & FM ITD3020
FEATURES
Single chip synthesized tuner for dual-band DAB and FM receiver Low-IF single-conversion architecture which eliminates all SAW filters Covers whole band-III (174 ~ 245 MHz), L-band (1450 ~ 1592 MHz) and FM (88 ~ 108 MHz) Operating dynamic range : -102 ~ -10 dBm Ultra low power consumption: Band-III 100 mW L-band 160 mW On-chip regulators for 2.85V single supply On-chip fast switching fractional-N PLL On-chip low phase noise and wide frequency range VCO On-chip bandwidth-adjustable low pass filter Integrated IF variable gain amplifier for direct connection to digital demodulators Noise/Linearity optimization through internal RF RSSI and AGC loop Adjustable take-over point Ideal for mobile DAB receiver, FM application I2C serial bus interface Small 40-QFN package (6 x 6 mm2) Minimal external components Fully compatible with dual-band DAB and FM
FUNCTIONAL BLOCK DIAGRAMS
Figure 1.
APPLICATIONS
Dual-band DAB Mobile Phone FM radio application Low Power PDA, Mobile Phone
GENERAL DESCRIPTION
The ITD3020 is a highly integrated CMOS single chip low-IF single-conversion tuner IC for dual-band DAB (Digital audio broadcasting) and FM. It supports Eureka-147 DAB standard along with analog FM. It includes 2 LNAs, 2 RF PGAs, 2 imagerejection down-conversion mixers, a bandwidth adjustable low pass filter, an IF variable gain amplifier, a VCO and a fractionalN PLL, etc. On-chip low phase noise VCO along with high resolution fractional-N frequency synthesizer make in-band phase noise lower than that of any other conventional tuners. The ITD3020 also includes several regulators, which make it possible to use single 2.85 V power supply. The ITD3020 exhibits ultra low power consumption such as 100 mW. Using small leadless 6 mm x 6 mm 40-LD QFN package, the ITD3020 is the best solution for highly integrated multituner system and portable application where low power consumption is critical. It has an industry standard I2C serial bus interface. Primary application of the ITD3020 is dual-band DAB/FM mobile phones and the portable DAB/FM receiver.
PRODUCT HIGHLIGHTS
1. Single chip synthesized tuner for dual-band DAB and FM receiver 2. Low-IF single-conversion architecture which eliminates all SAW filters 3. Ultra low power consumption: 100mW
Rev.2.5
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