ZL30623
Dual Channel Ultra Low Jitter Network Synchronizer
Overview
The ZL30623 is a fully compliant SEC (G.813) and EEC (G.8262) dual channel Network Synchronizer with ultra-low jitter performance of 250fs RMS. The device accepts up to 6 input references and generates up to 6 differential or 12 single-ended CMOS output clocks . Dual, independent, digital phase locked loops (DPLLs) have programmable loop bandwidths from 0.1Hz to 500Hz and provide G.8262 compliance including hitless reference switching, holdover and jitter filtering. Dual, independent fractional-N analog PLLs (APLLs) generate ultra-low jitter output clocks programmable to any frequency between <1Hz to 1035MHz.
Key Features
- Two Independent Channels
- Input Clocks (Per Channel)
- Three inputs, two differential/CMOS, one CMOS
- Any input frequency from 8kHz to 1250MHz (8kHz to 300MHz for CMOS)
- Per input activity and frequency monitoring
- Automatic or manual reference switching
- Low-Bandwidth DPLL (Per Channel)
- ITU-T G.813/G.8262 compliance (options 1 & 2)
- Low- jitter operation from any ≥10MHz TCXO
- Master clock jitter attenuator reduces cost by removing TCXO/OCXO low-jitter requirement
- Programmable bandwidth, 0.1Hz to 10Hz
- Attenuates jitter up to several UI
- Hitless Reference Switching
- High-resolution holdover averaging
- Digitally controlled phase adjustment
- Low-Jitter Fractional-N APLL and 3 Outputs (Per Channel)
- Any output frequency from <1Hz to 1035MHz
- High resolution fractional frequency conversion with 0ppm error
- Encapsulated design requires no external VCXO or loop filter components
- Each output has independent dividers
- Output jitter as low as 0.25ps RMS (12kHz - 20MHz integration band)
- Each output is CML or 2 x CMOS, can interface to LVDS, LVPECL, HSTL, SSTL and HCSL
- In 2 x CMOS mode, the P and N pins can be different frequencies (e.g. 125MHz and 25MHz)
- Per-output supply pin with CMOS output voltages from 1.5V to 3.3V
- Precise output alignment circuitry and per-output phase adjustment
- Per-output enable/disable and glitchless start/stop (stop high or low)
- General Features
- Automatics self-configuration at power-up from internal EEPROM; up to four pin selectable configurations
- Numerically controlled oscillator mode
- Input-to-output phase alignment with external feedback
- SPI or I2C processor interface
- Easy-to-use evaluation software
- 64 pin 5 x 10mm LGA package
Resources
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Ordering
Any Frequency Timing Card PLL with Ultra Low Jitter 2-Channel 64 Pin LGA T/R
| Distributor | SKU | Stock | MOQ | Pkg | |
|---|---|---|---|---|---|
| Digi-Key | ZL30623LFF7-ND | .. | Tape & Reel | No Stock |
Any Frequency Timing Card PLL with Ultra Low Jitter 2-Channel 64 Pin LGA Tray
| Distributor | SKU | Stock | MOQ | Pkg | |
|---|---|---|---|---|---|
| Digi-Key | ZL30623LFG7-ND | .. | Tray | No Stock |
