• Conversion from RF to I/Q Baseband on a single chip
• Independent Power-down of Low Noise Amplifier (LNA), Mixers, Intermediate Frequency (IF) Amplifiers, and Voltage-Controlled Oscillator (VCO)
• Digital Gain Control for LNA and IF Amplifiers
• DC Compensation of I/Q Outputs
• Operates from 2.75 Volts to 3.5 Volts
• Suitable for Global Systems for Mobile (GSM) Class 3, 4, or 5 Mobile Station Portable Cellular Telephone Applications
• Low profile package: 48-pin plastic quad flat package

Summary:   The TRF1020 is a single-chip radio frequency (RF) downconverter suitable for 900-MHz GSM applications. It combines in a small package and LNA, an RF mixer, an IF mixer, two IF amplifiers, and I/Q mixer and one buffered VCO.

The LNA has a nominal gain of 12.4 dB and noise figure of 2.1 dB. The RF mixer has a conversion gain of 13.4 dB and a single-sideband (SSB) noise figure of 8.3 dB. The IF amplifiers have combined variable gain from 0 to 84 dB in approximately 3-dB steps. The IF amplifier frequency range is 40 to 180 MHz for the first IF amplifiers and 10 to 180 MHz for the second IF amplifier. The local oscillator of the I/Q mixer operates at four times the last frequency of the IF mixer.