Maxim Integrated Products has released a new RF tuner for triple-band, dual-mode mobile TV and digital radio in a fully RF-tested die. Exploiting TQFN packaging, MAX2170ETL and MAX2170E/W support implementation of system-in-package (SIP) solutions for terrestrial digital multimedia broadcast (T-DMB) and ultra-small, digital audio broadcast (DAB) modules. By using RF-tested dice, this tuner provides significant cost reduction through higher module yield, making it suitable for fixed or mobile DAB and T-DMB applications.

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The MAX2170E/W contains all necessary blocks to implement a low-IF TV/radio tuner, except for a crystal and the L-band filtering required by some applications. This tuner is capable of receiving VHF band-III, L-band, and FM broadcasts with a minimum of external components. The MAX2170E/W integrates a low-noise, L-band front-end (with a noise figure of 3 dB) to eliminate the need for an external, low-noise amplifier circuit, thus reducing cost and saving space. When tuning VHF frequencies, its on-chip tracking filter rejects out-of-band interference; the tracking filter also doubles as an FM band-select filter. This highly integrated device achieves a sensitivity of –99 dBm at L-band frequencies, -100 dBm at VHF-III frequencies, and –109 dBm at FM frequencies, said Maxim.

The MAX2170E/W operates from a 2.7 V to 3.5 V supply and consumes 150 mW (typ) in L-band, low-power mode. Fully specified over the -40 °C to +85 °C temperature range, it is available as a fully RF-tested die. Prices start at $3.50 in quantities of 1000 and up.

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