Silicon Labs Si5380 12-Output JESD204B Clock Generator is a high performance, integer-based (M/N) clock generator optimized for small cell wireless applications.
These demand the highest level of integration and phase noise performance. These are based on Silicon Labs' 4th generation DSPLL technology. The Si5380 combines frequency synthesis and jitter attenuation in a highly integrated digital solution that eliminates the need for external VCXO and loop filter components. It includes a low cost, fixed-frequency crystal that provides frequency stability for free-run and holdover modes. This all-digital solution provides superior performance that is highly immune to external board disturbances.
Features
- Digital frequency synthesis eliminates external VCXO and analog loop filter components
- Supports JESD204B clocking: DCLK and SYSREF
- Input frequency range: 10MHz - 750MHz
- Output frequency range: 480kHz - 1.47456GHz
- Excellent jitter performance: 80fs typ (12kHz - 20MHz)
- Phase noise floor: -159dBc/Hz
- Spur performance: -103dBc max (122.88MHz carrier)
- Highly configurable outputs compatible with LVDS, LVPECL, LVCMOS, HCSL, and CML with programmable signal amplitude
- Adjustable output-output delay: 68ps/step, ±128 steps
- Optional Zero Delay mode
- Independent output supply pins: 3.3, 2.5, or 1.8V
- Core voltage: VDD = 1.8V ±5%, VDDA = 3.3V ±5%
- Automatic free-run, lock, and holdover modes
- Digitally selectable loop bandwidth: 0.1Hz to 100Hz
- Fastlock feature for low nominal bandwidths
- Hitless input clock switching
- Status monitoring (LOS, OOF, LOL)
- In-circuit programmable with nonvolatile OTP memory
- ClockBuilder™ Pro software simplifies device configuration
- 4 input, 12 output, 64-pin QFN
- Temperature range: -40 to +85°C
- Pb-free, RoHS-6 compliant
Applications
- JESD204B clock generation
- Remote Radio Units (RRU), Remote Access Networks (RAN), picocells, small cells
- Wireless base stations (3G, GSM, W-CDMA, 4G/LTE, LTE-A)
- Remote Radio Head (RRH), wireless repeaters, wireless backhaul
- Data conversion sampling clocks (ADC, DAC, DDC, DUC)
