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TDA7701 Fiches technique(PDF) 1 Page - STMicroelectronics |
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TDA7701 Fiches technique(HTML) 1 Page - STMicroelectronics |
1 / 4 page 1/4 TDA7701 February 2005 This is preliminary information on a new product now in development. Details are subject to change without notice. 1 Main Features ■ SINGLE-CHIP FM TUNER FOR LOW-VOLTAGE/ LOW POWER APPLICATIONS ■ INTEGRATED LNA (WITH AGC) AND IMAGE REJECTION MIXER ■ LOW-IF ARCHITECTURE WITH ON-CHIP CHANNEL SELECTION FILTER ■ VCO WITH ON-CHIP VARACTOR ■ INTEGRATED TUNING PLL WITH AUTO STATION SEARCH FUNCTION ■ ANALOG AND DIGITAL SIGNAL STRENGTH INDICATION ■ FULLY INTEGRATED FM DEMODULATOR AND ADJUSTMENT-FREE STEREO DECODER ■ PROGRAMMABLE AUTOMATIC STEREO BLEND AND SOFT MUTE ■ I 2C/SPI-BUS CONTROLLED ■ LOW POWER CONSUMPTION ■ HIGH SENSITIVITY ■ HIGH AUDIO QUALITY 2 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 multi- media 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 pro- cessing, IF processing, demodulation and stereo decoding, I2C/SPI-controlled tuning with station detection. Its low-IF architecture highly integrated RF/IF sec- tions include a low-noise preamplifier with Auto- matic 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 selectiv- ity and image-rejection performances Thanks to its on-chip varactor, the tuning-PLL controlled VCO needs just one external inductor for low phase- noise 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 fullyin- tegrated, adjustment-free dedicated PLL; auto- matic signal-dependent stereo blend and soft- mute 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 Rev. 1 Figure 1. Package Table 1. Order Codes Part Number Package TDA7701 TFBGA40 TFBGA40 |
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