STW81102 Datasheet, PDF (1/43 Pages) STMicroelectronics – Multi-band RF frequency synthesizer with integrated VCOs

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
Order codes
Part number
STW81102AT
STW81102ATR
Temp range, °C
-40 to 85
-40 to 85
VFQFPN28
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.
Package
VFQFPN28
VFQFPN28
Packing
Tray
Tape & Reel
June 2006
Rev 2
1/43
www.st.com
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