STW81103

STW81103 Multi-band RF frequency synthesizer with integrated VCOs Features ■ Integer-N frequency synthesizer www.DataSheet4U.com ■ Dual differential integrated VCOs with automatic center frequency calibration: – 2500 - 3050 MHz (direct output) – 4350 - 5000 MHz (direct output) – 1250 - 1525 MHz (internal divider by 2) – 2175 - 2500 MHz (internal divider by 2) – 625 - 762.5 MHz (internal divider by 4) – 1087.5 - 1250 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 (fast mode) with 3 bit programmable address (1100A2A1A0) Applications ■ ■ ■ ■ ■ ■ ■ ■ 2.5G and 3G Cellular infrastructure equipment CATV equipment Instrumentation and test equipment Other wireless communication systems Description The STMicroelectronics STW81103 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81103 is a low cost one chip alternative to discrete PLL and VCOs solutions. STW81103 includes an Integer-N frequency synthesizer and two fully integrated VCOs featuring low phase no...