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STW81100AT Datasheet(PDF) 1 Page - STMicroelectronics |
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STW81100AT Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 23 page  1/23 STW81100 April 2005 1 Features ■ Integer-N Frequency Synthesizer ■ Dual differential integrated VCOs with automatic center frequency calibration: – Direct Output: 3280 – 3900 MHz 3800 – 4400 MHz – Internal divider by 2: 1640 – 1950 MHz 1900 – 2200 MHz – Internal divider by 4: 820 – 975 MHz 950 – 1100 MHz ■ Fast lock time: 150 µs ■ Dual modulus prescaler (64/65) and 2 programmable counters to achieve a feedback division ratio from 4096 to 32767. ■ Programmable reference frequency divider (9 bits) ■ Phase frequency comparator and charge pump ■ Programmable charge pump current ■ Digital Lock Detector ■ I 2C bus interface with 3 bit programmable address (1100A2A1A0) ■ 3.3V Power Supply ■ Power down mode ■ Small size exposed pad VFQFPN28 package 5x5x1.0mm ■ Process: BICMOS 0.35 µm SiGe 2 Description The STMicroelectronics STW81100 is an integrat- ed RF synthesizer and voltage controlled oscilla- tors (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81100 is a low cost one chip alternative to discrete PLL and VCOs solutions. STW81100 includes an Integer-N frequency syn- thesizer and two fully integrated VCOs featuring low phase noise performance and a noise floor of -153dBc/Hz. The combination of wide frequency range VCOs (thanks to center-frequency calibra- tion over 32 sub-bands) and multiple output op- tions (direct output, divided by 2 or divided by 4) allows to cover the 820MHz-1100MHz, the 1640MHz-2200MHz and the 3280MHz-4400MHz bands. The STW81100 is designed with STMicroelectron- ics advanced 0.35 µm SiGe process. 3 Applications ■ Cellular 3G Infrastructure Equipment ■ Other Wireless Communication Systems DATASHEET MULTI-BAND RF FREQUENCY SYNTHESIZER WITH INTEGRATED VCOS Rev. 2 Figure 1. Package Table 1. Order Codes Part Number Package STW81100AT VFQFPN28 STW81100ATR VFQFPN28 in Tape & Reel VFQFPN28 |
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