PDF MAX3544 Data sheet ( Hoja de datos )

Número de pieza	MAX3544
Descripción	Multiband Digital Television Tuner
Fabricantes	Maxim Integrated Products
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No Preview Available ! 19-5470; Rev 0; 7/10 EVAALVUAAILTAIOBNLEKIT Multiband Digital Television Tuner General Description 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. Applications DVB-T/DVB-T2 DVB-C DTMB/GB20600 ATSC Features 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 www.DataSheet4U.com 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 567 23 22 21 I2C /N 8 9 10 20 SCL 19 VCCDIG 18 REFOUT 17 GND 16 DTVOUT+ 15 DTVOUT- 14 GND 13 VCC 12 GND 11 IFIN+ REF_OUT I2C DIGITAL DEMODULATOR IFVGC DIG_IF 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 www.maxim-ic.com. 1 page Multiband Digital Television Tuner Typical Operating Characteristics (MAX3544 Evaluation Kit, VCC = 3.3V, TA = +25NC, registers set according to Table 1, unless otherwise noted.) CASCADED VOLTAGE GAIN vs. FREQUENCY 100 95 0°C 90 85 80 +25°C +70°C 75 70 65 60 0 DVB-T MODE 100 200 300 400 500 600 700 800 900 FREQUENCY (MHz) CASCADED VOLTAGE GAIN vs. IFVGC VOLTAGE 100 fRF = 666MHz 90 0°C 80 +25°C 70 60 +70°C 50 40 30 0.5 DVB-T MODE 1.0 1.5 2.0 2.5 IFVGC VOLTAGE (V) 3.0 CASCADED VOLTAGE GAIN vs. RFVGC VOLTAGE 100 fRF = 666MHz 90 80 0°C 70 +25°C 60 50 +70°C 40 30 20 0.5 DVB-T MODE 1.0 1.5 2.0 2.5 RFVGC VOLTAGE (V) 3.0 10 9 8 7 6 5 4 3 2 1 0 0 NOISE FIGURE vs. FREQUENCY INPUT DIPLEXER CROSSOVER FREQUENCY IS 345MHz +25°C 100 200 300 400 500 600 700 800 900 FREQUENCY (MHz) www.DataSheet4U.com DVB-T SENSITIVITY vs. FREQUENCY -70 64QAM (3/4CR, 1/4GI, 8K, 8MHz), BER < 2e-4 -72 NORDIG SPECIFICATION -74 -76 -78 -80 -82 -84 -86 MEASURED MAX3544 -88 -90 0 100 200 300 400 500 600 700 800 900 FREQUENCY (MHz) _______________________________________________________________________________________ 5 5 Page Multiband Digital Television Tuner Register and Bit Descriptions Table 4. R00: VCO Register—VCO and LO Divider Control (Address: 00h) BIT NAME BIT LOCATION (0 = LSB) TYPICAL SETTING FUNCTION VCO[1:0] 7:6 VCO select. Selects one of three VCOs when VAS = 0, or selects the VCO starting band when VASS = 0. 01 00 = Selects VCO1 (approximately 2200MHz to 2800MHz) 01 = Selects VCO2 (approximately 2800MHz to 3500MHz) 10 = Selects VCO3 (approximately 3500MHz to 4400MHz) 11 = VCO shutdown VSUB[3:0] 5:2 0011 VCO sub-band select. Selects one of 16 possible VCO sub-bands when VAS = 0, or selects the VCO starting sub-band when VASS = 0. 0000 = Selects SB0 … 1111 = Selects SB15 VDIV[1:0] 1:0 VCO divider ratio select. 00 = Sets VCO divider to 4 (use when fLO > 550MHz) 00 01 = Sets VCO divider to 8 (use when 275MHz < fLO < 550MHz) 10 = Sets VCO divider to 16 (use when 137.5MHz < fLO < 275MHz) 11 = Sets VCO divider to 32 (use when fLO < 137.5MHz) Table 5. R01: NDIV INT Register—Integer Part of N-Divider (Address: 01h) BIT NAME BIT LOCATION (0 = LSB) TYPICAL SETTING FUNCTION NINT[7:0] 7:0 0010 1011 Sets the PLL integer divide number (N) Table 6. R02: NDIV FRAC2 Register—N-Divider Fractional Part [19:16] and R-Divider (Address: 02h) BIT NAME CPS CP BIT LOCATION (0 = LSB) 7 6 RDIV[1:0] www.DataSheet4U.com F[19:16] 5:4 3:0 TYPICAL SETTING 1 0 00 1110 FUNCTION Sets the charge-pump current-selection mode between automatic and manual. Must set to 1 for proper operation. For Maxim use only Reference divider. 00 = /1 01 = /2 1X = Maxim use only N-divider fractional part bits 19:16 (out of 19:0) ______________________________________________________________________________________ 11 11 Page

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