MAX2223ETI+

MAX2223ETI+ is an ultra-wideband, direct-conversion, L-band satellite tuner. It is a low-cost, direct-conversion tuner IC is designed for satellite set-top and very small aperture terminal (VSAT) applications. The device directly converts the satellite signals from the LNB to baseband using a broadband I/Q downconverter. The device includes an LNA and an RF variable-gain amplifier, I and Q down-converting mixers, and baseband amplifiers. The device includes fully monolithic VCOs, as well as a complete fractional-N frequency synthesizer. Additionally, an on-chip crystal oscillator is provided along with a buffered output for driving additional tuners and demodulators. Synthesizer programming and device configuration are accomplished with a 2-wire serial interface. The IC features a VCO auto-select (VAS) function that automatically selects the proper VCO. Applications include VSATs.

• Input frequency range from 925 to 2175MHz (VCC = +3.13V to +3.47V, TA = -40°C to +85°C)
• Monolithic VCO, no calibration required
• 8dB typical noise figure (VGC1 = 0.5V (max gain))
• High dynamic range from -75dBm to 0dBm
• Low power standby mode, address pin for multituner applications
• Differential I/Q interface
• I²C-compatible, 2-wire serial interface
• Supply voltage range from 3.13 to 3.47V (VCC = +3.13V to +3.47V, TA = +25°C)
• 140mA typical supply current (receive mode, bit STBY = 0)
• 28 lead TQFN-EP package, operating temperature range from -40°C to +85°C

附註

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