Description
TDA7701 is a single-chip FM Tuner specifically designed in mixed Bipolar-CMOS technology for low-voltage/low-power applications, where the minimization of external component count and PCB size and complexity are mandatory: typical examples are mobile phones and portable multimedia equipment. Housed in a small TFBGA40 package (5x5 mm), it features the full FM signal processing chain from antenna to stereo audio output: RF front-end processing, IF processing, demodulation and stereo decoding, I2C/SPI-controlled tuning with station detection. Its low-IF architecture highly integrated RF/IF sections include a low-noise preamplifier with Automatic Gain Control, an image rejection mixer and on-chip high-Q channel selection filters that bring to a minimum the external component count and PCB complexity while guaranteeing good selectivity and image-rejection performances Thanks to its on-chip varactor, the tuning-PLL controlled VCO needs just one external inductor for low phasenoise oscillation. FM demodulation is performed by means of a fully integrated circuit that eliminates the need for an external LC tank while maximizing linearity. The FM stereo signal is decoded through a fullyintegrated, adjustment-free dedicated PLL; automatic signal-dependent stereo blend and softmute functions are provided. A single external reference frequency is needed for IC operation, and can be selected among those commonly used in GSM applications (13/19.2/26/ 38.4 MHz + 32768Hz real-time/sleep clock). DATA BRIEF BATTERY-OPERATED FULLY INTEGRATED FM TUNER