Integrated RF down-converters STW8210 integrated RF down-converter series with embedded synthesizer offers top performance, reduces BOM and footprint With 8 dB gain, 10.5 dB NF and +25.5 dBm IIP3, the STW8210 series meets the high-performance and low-cost demands of equipment makers, by providing higher integration. The STW8210 series integrates a high-linearity passive down-mixer and IF amplifier, together with an integer-N PLL and two wideband self-calibrated low-noise VCOs. Its suitability for demodulation stages of wireless equipment (such as 3G/LTE cellular base stations) has already been proven. The STW8210 series covers all key cellular bands with four frequency variants. KEY FEATURES KEY BENEFITS • High IIP3: 25.5 dBm • High level of integration: reduced BOM, • Noise figure: 10.5 dB • Conversion gain: 8 dB • RF frequency range: 698 MHz to 2690 MHz • Wide IF amplifier frequency range: 70 MHz to 400 MHz • Low noise Integer-N synthesizer: -155 dBc/Hz noise floor • Integrated DAC with dual current output • Dual digital bus interface: SPI & I²C • 44-lead exposed pad VFQFPN package footprint and increased reliability • Full coverage of the cellular infrastructure standards spectrum • Leading edge RF performances • Compliancy with the requirements of cellular base stations • Cost-effective solution TARGETED APPLICATIONS • Cellular 3G/4G infrastructure equipment • Other wireless communication systems 7x7x1.0 mm www.st.com/rf-communication HIGH-PERFORMANCE, FLEXIBLE AND INTEGRATED Highly integrated, and demonstrating high-performance wideband capabilities, the STW8210 RF down-converter series are single-chip alternatives to discrete, expensive and bulky mixer, PLL and VCO solutions. This series has been designed in ST’s proprietary BiCMOS technology which has proven itself in challenging RF applications. The STW8210 series provide flexibility for designers by supporting different modes of operation: • When used in the receiver section it can be configured to offer a dedicated LO (local oscillator) frequency generator for each antenna path. • Alternatively it can be used in a more traditional antenna-diversity receiver scheme. • In transmitter loop-back circuits, designers can profit from its excellent gain flatness and the integrated 10-bit DAC. VDD_RFESD VSS_RFESD Evaluation kits for the STW8210 series include: VDD_IF VSS_IF TEST 2 TEST 1 TEST_ALC VDD_DAC VSS_DAC EVALUATION KITS REXT_DAC VDD_ALC VSS_ALC I_PINDRV1 I_PINDRV2 STW8210 SERIES BLOCK DIAGRAM • Evaluation board DAC RF_IN RF_VSS RF_CT MIXDRV_CT IF_OUTP IF_OUTN IF AMP • GUI (graphical user interface) software to program the device • PLLSim software to simulate PLL MIX DRV VDD_MIXDRV VSS_MIXDRV performances and loop filter design VDD_DIV VSS_DIV DIV DBUS OUTBUFN OUTBUFP VCO calibrator EXTVCO_INP EXTVCO_INN VDD_VC0 VSS_VC0 VCO divider VCO BUF VDD_IO VSS_IO PFD DN ADD0 ADD1 ADD2 • STW82100B-EVB VDD_DIG VSS_DIG LOCK_DET • STW82101B-EVB • STW82102B-EVB ICP CHP REF BUF REF_CLK VCTRL Power down decoder Power downs Evaluation kit order codes: UP REF divider CAL_VCO VDD_PSCBUF VSS_PSCBUF CAL_VCO • STW82103B-EVB VDD_PLL VSS_PLL EXT_PD EXT LO VCO PD<4:0> • PC connection cable DBUS_SEL SDA/DATA SCL/CLK LOAD REXT_CP VCO OUT VSS_CP LO OUT VDD_CP VDD_OUTBUF VSS_OUTBUF DEVICE SUMMARY Part number RF frequency range [MHz] LO frequency range [MHz] Gain [dB] NF [dB] IIP3 [dBm] PN floor @ 40 MHz [dBc/Hz] STW82100B 1620-2400 1650-1950 2050-2370 8 10.5 +25.5 -155 STW82101B 698-960 850-1025 1025-1185 8 10.5 +25.5 -155 STW82102B 1425-1910 1500-1800 1900-2200 8.5 9.5 +24.5 -156 STW82103B 2300-2700 2200-2550 2500-3000 8 10.5 +25.5 -156 © STMicroelectronics - April 2012- Printed in United Kingdom - All rights reserved The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies All other names are the property of their respective owners Order code: FLSTW82100412 For more information on ST products and solutions, visit www.st.com