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MAX3580 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3580 Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 21 page General Description The MAX3580 fully integrated, direct-conversion TV tuner is designed for Digital Video Broadcasting-Terrestrial (DVB-T) applications. The integrated tuner covers a 170MHz to 230MHz input frequency range for the VHF-III band and 470MHz to 878MHz for the UHF band. The MAX3580 direct-conversion tuner integrates an RF input switch and a multiband tracking filter, allowing low-power tuner-on-board applications without the cost and power-dissipation issues of dual-conversion tuner solutions. The zero-IF architecture eliminates the need for SAW filters by providing baseband I and Q outputs directly to the demodulator. In addition, DC-offset can- cellation is implemented on-chip using a mixed-signal architecture to improve the second-order distortion per- formance and the dynamic range of the downstream digitizer and demodulator. The MAX3580 features dynamic gain control of more than 76dB and a typical midband noise figure of 4.7dB referred to the LNA input. The VCO architecture opti- mizes both in-band and wideband phase noise for OFDM applications where sensitivity to both 1kHz phase noise and wideband phase noise related to strong adjacents can be a problem. The MAX3580 communicates using a 2-wire serial bus. The device operates from a typical +3.3V power supply and dissipates 650mW. The MAX3580 is available in a small 32-pin thin QFN package (5mm x 5mm) with an exposed paddle. Applications Digital Televisions Digital Terrestrial Set-Tops Laptop Televisions Automotive Televisions USB Peripherals Features ♦ 650mW Power Dissipation (at VCC = +3.3V) ♦ I and Q Baseband Outputs Eliminate All IF-SAW Filters ♦ Integrated RF Tracking Filters ♦ Tunable Baseband Lowpass Filters ♦ Full-Band VHF-III and UHF Tuning ♦ +38dB Digital ACPR, +47dB Analog ACPR ♦ Low Noise Figure: 4.7dB (typ) ♦ Frac-N Synthesizer for -90dBc/Hz Close-In Phase Noise ♦ +3.1V to +3.5V Supply Voltage Range ♦ Ultra-Small, 5mm x 5mm Thin QFN Package Direct-Conversion TV Tuner ________________________________________________________________ Maxim Integrated Products 1 PART TEMP RANGE PIN-PACKAGE MAX3580ETJ+ -40°C to +85°C 32 TQFN-EP* MAX3580ETJ+T -40°C to +85°C 32 TQFN-EP* Pin Configuration/ Functional Diagram Ordering Information TRACKING FILTER GND_TUNE LDO VCC_VCO RFIN2 ADDR2 LEXT RFIN SCL SDA BBI- BB_AGC BBI+ VCC_RF VTUNE CP GND_LNA TOP VIEW + 32 28 29 30 31 25 26 27 10 13 15 14 16 11 12 9 17 18 19 20 21 22 23 24 2 3 4 5 6 7 8 1 MAX3580 0 90 LO LO CHARGE PUMP SERIAL INTERFACE, CONTROL, AND SYNTHESIZER 19-0611; Rev 7; 1/09 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. * EP = Exposed paddle. + Denotes a lead(Pb)-free/RoHS-compliant package. T = Tape-and-reel package. EVALUATION KIT AVAILABLE |
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