Telecoms, Datacoms, Wireless, IoT


RF tuner for DAB and T-DMB

23 July 2008 Telecoms, Datacoms, Wireless, IoT

The new MAX2170E/W from Maxim is an RF tuner for triple-band, dual-mode mobile TV and digital radio in a fully RF-tested die. It supports implementation of system-in-package (SIP) solutions for terrestrial digital multimedia broadcast (T-DMB) and digital audio broadcast (DAB) modules.

The device 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. It integrates an L-band front-end with a noise figure of 3 dB to eliminate the need for an external, low-noise amplifier circuit.

When tuning VHF frequencies, the device's 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.

The MAX2170E/W operates from a 2,7 V to 3,5 V supply and consumes 150 mW in L-band, low-power mode. It is fully specified over the -40°C to +85°C temperature range.

For more information contact CST Electronics, +27 (0)11 608 0070, ecampling@cstelectronics.co.za, www.cstelectronics.co.za



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