Click here to ask about the production status of specific part numbers. MAX2223 Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner General Description Benefits and Features The MAX2223 low-cost, direct-conversion tuner IC is de- 925MHz to 2175MHz Frequency Range signed for satellite set-top and very small aperture termi- Monolithic VCO nal (VSAT) applications. The device directly converts the Low Phase Noise: -97dBc/Hz at 10kHz satellite signals from the LNB to baseband using a broad- No Calibration Required band I/Q downconverter. The operating frequency range High Dynamic Range: -75dBm to 0dBm extends from 925MHz to 2175MHz. 1GHz RF Bandwidth Supported The device includes an LNA and an RF variable-gain am- Single +3.3V 5% Supply plifier, I and Q down-converting mixers, and baseband Low-Power Standby Mode amplifiers. The RF variable-gain amplifier provides more Address Pin for Multituner Applications than 70dB of gain control range. The device supports an Differential I/Q Interface 2 RF bandwidth of 1GHz. I C-Compatible, 2-Wire Serial Interface Very Small, 5mm x 5mm, 28-Pin TQFN Package The device includes fully monolithic VCOs, as well as a complete fractional-N frequency synthesizer. Additional- Ordering Information appears at end of data sheet. ly, an on-chip crystal oscillator is provided along with a buffered output for driving additional tuners and demod- ulators. Synthesizer programming and device configura- tion are accomplished with a 2-wire serial interface. The IC features a VCO auto-select (VAS) function that automati- cally selects the proper VCO. For multituner applications, the device can be configured to have one of two 2-wire interface addresses. A low-power standby mode is avail- able whereupon the signal path is shutdown while leaving the reference oscillator, digital interface, and buffer circuits active, providing a method to reduce power in single and multituner applications. A small number of passive components are needed to form a complete broadband satellite tuner DVB-S2 RF front-end solution. The tuner is available in a very small, 5mm x 5mm, 28-pin TQFN package. Applications VSATs 19-100597 Rev 1 9/20MAX2223 Ultra-Wideband, Direct-Conversion, L-Band Satellite Tuner Block Diagram 28 27 26 25 24 23 22 INTERFACE LOGIC DC OFFSET VCC RF2 1 CORRECTION 21 AND CONTROL IDC+ V CC RF1 2 20 IOUT- GND 3 19 IOUT+ RFIN 4 18 QOUT- GC1 5 17 QOUT+ FREQUENCY DIV2/DIV4 SYNTHESIZER V 6 16 CC LO V CC DIG EP VCC VCO 7 15 REFOUT 8 9 10 11 12 13 14 www.maximintegrated.com Maxim Integrated 2 BYPVCO ADDR TUNEVCO SCL GNDTUNE SDA GNDSYN V CC BB CPOUT QDC- V QDC+ CC SYN XTAL IDC-