STW81101
Overview
The STMicroelectronics STW81101 is an integrated RF synthesizer with voltage controlled oscillators (VCOs). Showing high performance, high integration, low power, and multi-band performances, STW81101 is a low-cost one-chip alternative to discrete PLL and VCO solutions.
- Integer-N frequency synthesizer
- Dual differential integrated VCOs with automatic 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 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
