Part # MAX2120 datasheet

Part Manufacturer: Maxim

Maxim

Part Description: MAX2120 DS


Part Details:

19-0832; Rev 1; 3/08 EVALUATION KIT AVAILABLE Complete, Direct-Conversion Tuner for DVB-S and Free-to-Air Applications MAX2120 General Description Features The MAX2120 low-cost, direct-conversion tuner IC is 925MHz to 2175MHz Frequency Range designed for satellite set-top and VSAT applications. Monolithic VCO: No Calibration Required The IC is intended for QPSK, Digital Video Broadcast -75dBm to 0dBm High Dynamic Range (DVB-S), DSS, and free-to-air applications. 4MHz to 40MHz Integrated Variable BW LP Filters The MAX2120 directly converts the satellite signalsfrom the LNB to baseband using a broadband I/Q Single +3.3V ±5% Supply downconverter. The operating frequency range extends Low-Power Standby Mode from 925MHz to 2175MHz. Address Pin for Multituner Applications The device includes an LNA and an RF variable-gain Differential I/Q Interface amplifier, I and Q downconverting mixers, and baseband I2C 2-Wire Serial Interface lowpass filters with programmable cutoff frequency control and digitally controlled baseband variable-gain Very Small 28-Pin Thin QFN Package amplifiers. Together, the RF and baseband variable-gainamplifiers provide more than 80dB of gain-control range.The IC is compatible with virtually all QPSK demodulators. Ordering Information The MAX2120 includes fully monolithic VCOs, as well asa complete frequency synthesizer. Additionally, an on- PKG chip crystal oscillator is provided along with a buffered PART TEMP RANGE PIN-PACKAGE CODE output for driving additional tuners and demodulators. MAX2120CTI+ 0°C to +70°C 28 Thin QFN-EP* T2855+3 Synthesizer programming and device configuration areaccomplished with a 2-wire serial interface. The IC fea- *EP = Exposed paddle. tures a VCO autoselect (VAS) function that automatically +Denotes lead-free package. selects the proper VCO. For multituner applications, thedevice can be configured to have one of two 2-wireinterface addresses. A low-power standby mode is Pin Configuration/ available whereupon the signal path is shut down while Functional Diagram leaving the reference oscillator, digital interface, andbuffer circuits active, providing a method to reducepower in single and multituner applications. The MAX2120 is the most advanced DBS tuner available ADDR SCL SDA


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MAX2120.pdf Datasheet