MAX3544
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MAX3544CTL+ (pdf) |
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MAX3544 Multiband Digital Television Tuner The MAX3544 broadband single-conversion television tuner is designed for use in digital DVB-T, DVB-C, GB20600 television sets and terrestrial receivers. It receives all television bands from 47MHz to 862MHz and converts the selected channel to an industry-standard 36MHz IF. The MAX3544 includes a variable-gain low-noise input amplifier an RF tracking filter an image rejection mixer a peak detector an optional internal, self-contained RF gain-control loop RFAGC a VCO with fractional-N PLL an IF bandpass filter an IF variable-gain amplifier and a crystal oscillator. The MAX3544 is available in a small, 6mm x 6mm, thin QFN package, and the application circuit fits in 20mm x 25mm on a two-layer board with single-sided component mounting. DVB-T/DVB-T2 DVB-C DTMB/GB20600 ATSC S Standard IF Architecture Ensures < -70dBc Spurs S Integrated RF Tracking Filter S Integrated IF Bandpass Filter S Full-Band Coverage 47MHz to 862MHz S 70dB Image Rejection S 4dB Noise Figure S Fast-Locking, Low Phase-Noise PLL Supports 256QAM S Crystal Oscillator and Buffer/Divider to Drive Baseband IC S 745mW Power Dissipation Ordering Information PART MAX3544CTL+ TEMP RANGE 0NC to +70NC PIN-PACKAGE 40 TQFN-EP* +Denotes a lead Pb -free/RoHS-compliant package. *EP = Exposed paddle. Block Diagram/Typical Application Circuit/Pin Configuration TFVL1 VCC LDOBYP VCC GND TUNE SDA REFDIV XTALE XTALB 30 29 28 27 TFVL2 31 TFVH1 32 TFVH2 33 TFU1 34 MAX3544 TFU2A 35 TFU2B 36 TFU3 37 LEXT 38 TRACKING FILTER PDET VCC 39 RFINL 40 + 12 34 26 25 24 FRAC-N PLL 23 22 21 I2C 8 9 10 20 SCL 19 VCCDIG REFOUT 18 GND 17 16 DTVOUT+ 15 DTVOUT14 GND 13 VCC 12 GND 11 IFIN+ DIGITAL DEMODULATOR REF_OUT IFVGC DIG_IF RFINH RFGND1 RFVGC VCCIF RFGND2 IFOUT1A IFOUT1B IFVGC ADDR IFIN- LC BANDPASS FILTER NOTE LAYOUT FITS 25mm x 20mm ON 2-LAYER BOARD WITH DEVICE PLACEMENT ON TOP SIDE ONLY. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at Multiband Digital Television Tuner MAX3544 ABSOLUTE MAXIMUM RATINGS VCC to +3.6V RFINL, RFINH, IFIN+, IFIN-, DTVOUT+, DTVOUT-, IFOUT1A, IFOUT1B.............................. -0.3V to VCC + 0.3V SDA, SCLK, IFAGC, to +3.6V Short-Circuit Protection DTVOUT+, DTVOUT-, IFOUT1A, Indefinite RF Input +10dBm Continuous Power Dissipation TA = +70NC derate 35.7mW/NC above Operating Temperature Range.............................. 0NC to +70NC Junction Storage Temperature Range............................ -65NC to +165NC Lead Temperature soldering, Soldering Temperature Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS MAX3544 Evaluation Kit, VCC = 3.1V to 3.5V, TA = 0NC to +70NC, registers set according to Table Typical values are at VCC = 3.3V, TA = +25NC, unless otherwise noted. Note 1 PARAMETER CONDITIONS MIN TYP MAX UNITS SUPPLY VOLTAGE AND CURRENT Supply Voltage Supply Current IF VGA enabled Standby REF oscillator on R08[7] = 1 225 270 mA RF and IF VGC Input Bias Current At 0.5V to 3.0V DC -100 to +100 RF and IF VGC Control Voltage Maximum gain RF and IF VGC Control Voltage Minimum gain SERIAL INTERFACE Input Logic-Level Low x VCC Input Logic-Level High x VCC Output Logic-Level Low 3mA sink current Output Logic-Level High VCC 0.5V Maximum Clock Rate AC ELECTRICAL CHARACTERISTICS MAX3544 Evaluation Kit, RF center frequency = 666MHz, IF center frequency = 36.15MHz, registers set according to Table 1, fREF = 16MHz, VRFVGC = VIFVGC = 3.0V, VCC = 3.3V, TA = +25NC, unless otherwise noted. PARAMETER CONDITIONS OVERALL REQUIREMENTS RF INPUT TO IF OUTPUT RFINL Operating Frequency Range |
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