TRF1122 www.ti.com SLWS173 – APRIL 2005 2.5-GHz Integrated Up-Converter FEATURES 26 IFADJ VDDIF RFI GND GND VDD1 GND 28 27 25 24 MXRADJ VDD2 2 23 UCEN GND 3 22 MXRO UCATTN 4 21 GND GND 5 20 IFIN RFO 6 19 IFIP LOADJ1 7 18 VDDIFP VNEG 8 17 VDDIFN 10 11 12 13 14 15 16 LON 9 GND 1 GND IADJ Figure 1. TRF1122 Pin Out BPF RFI MXRO Mixer RF AMPLIFIER VGA IFIP BALUN RFO IFIN LOP Power Supply LON LO Buffer −VNEG VDD UCEN UCATTN Figure 2. Functional Block Diagram Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright © 2005, Texas Instruments Incorporated PRODUCT PREVIEW The TRF1122 is designed to complete the second up-conversion in Texas Instruments complete 2.5-GHz chip set. The linear nature of the up-converter makes it ideal for complex modulations schemes such as high order QAM or OFDM. 29 VDDLO The TRF1122 up-converts a UHF IF signal to an RF signal in the 2100-MHz to 2700-MHz range for 2.5-GHz radio applications. The TRF1122 has 18 dB of gain and an output P-1 dB of +14 dBm, typical. A TTL compatible, 1-bit 16-dB switched attenuator is provided for gain control and the IF and RF amplifiers can be shut off via a TTL control signal for power critical or TDD applications. In order to provide system requirements for LO/spurious rejection, the TRF1122 offers a signal path to an off-chip band-pass filter. Specifications are provided assuming an in-band 2-dB insertion loss filter. 30 LOP DESCRIPTION 32 31 GND • • • • • • • LPCC−32 PACKAGE (TOP VIEW) GND • DEVICE INFORMATION LOADJ2 • Performs Up-Conversion in 2.5-GHz Radios MDS/MMDS/WCS Integrated IF amplifier, Mixer and LO Buffer Amplifier Provision for External Image Reject / Band-Pass Filter TTL Switched Attenuator For Gain Control TTL Controlled Amplifier Blanking RF Frequency Range: 2100 - 2700 MHz 18 dB of Gain with 16-dB Switched Attenuator Output P-1 dB: +14 dBm, Typical Output IP3: +24 dBm, Typical LO Drive Level = 0 dBm, Typical GND • IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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