ITD3020: Low-IF tuner IC for-广州唯朴科技有限公司

ITD3020: Low-IF tuner IC for

发布时间：2009-09-14

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ITD3020: Low-IF tuner IC for dual-band DAB & FM

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 image-rejection down-conversion mixers, a bandwidth adjustable low pass filter, an IF variable gain amplifier, a VCO and a fractional- N 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 × 6 mm 40-Lead 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

Single chip synthesized tuner for dual-band DAB and FM receiver
Low-IF single-conversion architecture which eliminates all SAW filters
Ultra low power consumption: 100mW

Applications

Dual-band DAB Mobile Phone

FM radio application

Low Power PDA, Mobile Phone

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
Ideal for mobile DAB receiver, FM application
I²C serial bus interface

On-chip regulators for 2.85 V 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
Minimal external components
Fully compatible with dual-band DAB and FM
Small 40-QFN package (6 mm × 6 mm)

ITD3020 Diagram
Functional Block Diagram for ITD3020