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STW81102-EVB1G Datasheet(PDF) 1 Page - STMicroelectronics |
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STW81102-EVB1G Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 43 page  June 2006 Rev 2 1/43 1 STW81102 Multi-band RF frequency synthesizer with integrated VCOs Feature summary ■ Integer-N Frequency Synthesizer ■ Dual differential integrated VCOs with automatic center frequency calibration: – 3000 - 3620 MHz (Direct output) – 4000 - 4650 MHz (Direct output) – 1500 - 1810 MHz (Internal divider by 2) – 2000 - 2325 MHz (Internal divider by 2) – 750 - 905 MHz (Internal divider by 4) – 1000 - 1162.5 MHz (Internal divider by 4) ■ Excellent integrated phase noise ■ Fast lock time: 150µs ■ Dual modulus programmable prescaler (16/17 or 19/20) ■ 2 programmable counters to achieve a feedback division ratio from 256 to 65551 (prescaler 16/17) and from 361 to 77836 (prescaler 19/20). ■ Programmable reference frequency divider (10 bits) ■ Phase frequency comparator and charge pump ■ Programmable charge pump current ■ Digital Lock Detector ■ Dual Digital Bus Interface: SPI and I2C bus with 3 bit programmable address (1100A2A1A0) ■ 3.3V Power Supply ■ Power down mode (HW and SW) ■ Small size exposed pad VFQFPN28 package 5x5x1.0mm ■ Process: BICMOS 0.35µm SiGe Applications ■ 2.5G and 3G Cellular Infrastructure Equipment ■ CATV Equipment ■ Instrumentation and Test Equipment ■ Other Wireless Communication Systems Description The STMicroelectronics STW81102 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81102 is a low cost one chip alternative to discrete PLL and VCOs solutions. STW81102 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -155dBc/Hz. The combination of wide frequency range VCOs (thanks to center- frequency calibration over 32 sub-bands) and multiple output options (direct output, divided by 2 or divided by 4) allows to cover from 750MHz to 905MHz and 1000MHz to 1162.5MHz, from 1500MHz to 1810MHz and 2000MHz to 2325MHz, from 3000MHz to 3620MHz and 4000MHz to 4650MHz bands. The STW81102 is designed with STMicroelectronics advanced 0.35µm SiGe process. Order codes VFQFPN28 Part number Temp range, °CPackage Packing STW81102AT -40 to 85 VFQFPN28 Tray STW81102ATR -40 to 85 VFQFPN28 Tape & Reel www.st.com |
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