Digital FM radio tuner for digital audio receivers

Maxim Integrated Products has brought to the market a MAX2172 digital radio tuner for FM and digital audio broadcast (DAB) signals, with a high sensitivity for the FM, VHF, and L-band frequency ranges. This device integrates all components necessary to implement a complete tuner solution, including LNAs, mixers, an IF filter, and a fully synthesized local oscillator.

Additionally, the IC integrates a front-end tracking filter to eliminate interference between the UHF, VHF, and FM bands. An on-chip received-signal-strength indicator (RSSI) and temperature sensor ensure fast, accurate scan and seek functions. The RSSI provides ±2dB accuracy and outputs the measured level in digital form through the I²C bus. With a FM sensitivity of -111dBm (typ), and FM adjacent-channel performance thus device meets ETSI EN 55020 standard. With a current consumption of 61 mA (typ) from a single 3V supply, the MAX2172 is suggested for consumer and automotive applications.

IF frequency: 2.048MHz (is compatible with most DAB digital demodulators).

Package: Lead-free, 6mm x 6mm, 40-pin TQFN.
Temperature range: -40°C to +85°C.
Price: Each US$ 4.00 for 1K pieces

For more information, go to www.maxim-ic.com