STW81103
Overview
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.
- Integer-N frequency synthesizer
- 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)
