The STMicroelectronics STW81101 is anintegrated RF synthesizer with voltage controlledoscillators (VCOs). Showing high performance,high integration, low power, and multi-bandperformances, STW81101 is a low-cost one-chipalternative to discrete PLL and VCO solutions.¦ Integer-N frequency synthesizer¦ Dual differential integrated VCOs withautomatic center frequency calibration:– 3300 - 3900 MHz (direct output)– 3800 - 4400 MHz (direct output)– 1650 - 1950 MHz (internal divider by 2)– 1900 - 2200 MHz (internal divider by 2)– 825 - 975 MHz (internal divider by 4)– 950 - 1100 MHz (internal divider by 4)¦ Excellent integrated phase noise¦ Fast lock time: 150 µs¦ Dual modulus programmable prescaler(16/17 or 19/20)¦ 2 programmable counters to achieve afeedback 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 witha 3-bit programmable address (1100A2A1A