TRF1112, TRF1212 www.ti.com SLWS175 – APRIL 2005 3.5-GHz Integrated IF Up-Converter • • • • • • • • DESCRIPTION LPCC−48 PACKAGE (TOP VIEW) CP2O LD1 LF1 EN FRBP VCCD1 FR VCCD2 CLK DATA LF2 LD2 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 AGCO IFBPB IF1IP IF1IN VCCA VCCB VERR VREF VFB VCCC IF2AOP IF2AON CP2O LO2TUN LO2BPB VDET AGCI LO2BPA VCCLO2 BBON BBOP VBGR IF2BON IF2BOP The TRF1112 / TRF1212 are UHF-VHF down converters with integrated UHF and S-band frequency synthesizers for radio applications in the 2 GHz to 4 GHz range. The device integrates an image reject mixer, IF gain blocks, automatic gain control (AGC), and two complete phase locked loop (PLL) circuits including: VCOs, resonator circuit, varactors, dividers, and phase detectors. DEVICE INFORMATION Figure 1. TRF1112 / TRF1212 Pin Out 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 • EXTLO1N EXTLO1P VCCLO1 LO1OP LO1ON LO1BPA LO1TUN LO1BPB IF2BIN IF2BIP IF2AIN IF2AIP • • • The TRF1112 / TRF1212 are designed to function as part of Texas Instruments 2.5-GHz and 3.5-GHz complete radio chipsets, respectively. In the chipset, two chips function together to double-down-convert RF frequencies to an IF frequency that is suitable for most baseband modem ADCs. The TRF1112 / TRF1212 performs the second down conversion from the first IF frequency (480 MHz typical) to a final IF frequency (20-50 MHz). The radio chipset features sufficient linearity, phase noise and dynamic range to work in single carrier or multi-carrier, line-of-sight or non-line-of-sight, IEEE standard 802.16, BWIF, or proprietary systems. Due to the modular nature of the chipset, it is ideal for use in systems that employ transmit or receive diversity. 48 47 46 45 44 43 42 41 40 39 38 37 • • Low Phase Noise High Dynamic Range Image-Reject Downconverter Selectable IF Filters Internal or External AGC Control With Peak Detector and Voltage Reference Analog Gain Control Range Direct Interface to A/D Dual VCO/PLL With On-Chip Resonator For Double Down-Conversion Architecture S-Band LO Frequency Range: – TRF1112: 1818 to 2268 MHz – TRF1212: 2818-MHz to 3382-MHz UHF LO Frequency Range: 360 to 456 MHz Phase Noise is 0.5 RMS Typ 100 Hz to 1 MHz Rx Noise Figure of 5 dB, Typ UHF LO Tuning Step Size of 125 kHz Typical Gain of 90 dB, Including 15-dB Loss IF2 SAW Filter Input Third Order Intercept Point > 0 dBm Input 1-dB Compression Point > -10 dBm Gain Control Range of 90 dB Typ 13 14 15 16 17 18 19 20 21 22 23 24 FEATURES • • TRF1112, TRF1212 www.ti.com SLWS175 – APRIL 2005 VCCC VCCD1 VCCB VCCA Power Supply IF2 LPF IF2AOP 90 º BPF IF2AON IF1 IF2AIP IF VGA IF2AIN IFBPB BBOP BBON IF1IP LPF IF1IN IF2BOP BPF IF2BON IF2BIP IF2BIN Down−converter DETECTOR 90 º VDET VFB LO1OP N N LO1ON VERR Chrg Pump Chrg Pump VCCD2 Synthesizer #1 DATA CLK VBGR R Synthesizer #2 Synthesizer Data Decoder & Controller Automatic Gain Controller LD2 LF2 LO2BPA LO2BPB 2 CP20 VCCLO2 Figure 2. Block Diagram LO2TUN FRBP FR LO1BPA LO1BPB LD1 LFI CP1O VCCLO1 EXTLOIP EXTLOIN LO1TUN PRODUCT PREVIEW EN VREF VCO2 VCO1 AGCI AGCO IF2 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. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. 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