The ZL30252 is a flexible, high-performance, clock multiplier/jitter attenuator IC. From any input clock frequency 1kHz to 1250MHz the ZL30252 can produce frequency-locked output frequencies from 1Hz to 1035MHz and as many as 3 differential or 6 CMOS output clock signals. Output jitter is typically 0.16 to 0.28ps RMS (12kHz to 20MHz). Automatic self-configuration from external EEPROM allows clock signals to be available immediately after power-up or reset.
Additional Features
Three Input Clocks
Two Differential/CMOS inputs
One single-ended/CMOS input
Any input frequency from 1kHz to 1250MHz (1kHz to 300MHz for CMOS)
Inputs continually monitored for activity and frequency accuracy
Automatic or manual reference switching
Low-Bandwidth DPLL
Programmable bandwidth, 14Hz to 500HzClose
Attenuates jitter up to several UI
Freerun or digital hold on loss of all inputs
Digitally controlled phase adjust
Low-Jitter Fractional-N APLL and 3 Outputs
Any Output Frequency from <1Hz to 1035MHz
High-resolution fractional frequency conversion with 0ppm error
Easy-to-configure, encapsulated design requires no external VCXO or loop filter components
Each output has independent dividers
Output Jitter Typically 0.16 to 0.28ps RMS (12kHz to 20MHz integration band)
Outputs are CML or 2xCMOS, can interface to LVDS, LVPECL, HSTL, SSTL and HCSL
In 2xCMOS 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
Automatic self-configuration at power-up from external (ZL30252) or internal (ZL30253) EEPROM; up to four configurations, pin-selectable
Numerically controlled oscillator mode
Spread-spectrum modulation mode
SPI or I2C processor Interface
Tiny 5x5mm QFN package
Easy-to-use evaluation software
The ZL30252 is a flexible, high-performance, clock multiplier/jitter attenuator IC. From any input clock frequency 1kHz to 1250MHz the ZL30252 can produce frequency-locked output frequencies from 1Hz to 1035MHz and as many as 3 differential or 6 CMOS output clock signals. Output jitter is typically 0.16 to 0.28ps RMS (12kHz to 20MHz). Automatic self-configuration from external EEPROM allows clock signals to be available immediately after power-up or reset.
Additional Features
- Three Input Clocks
- Two Differential/CMOS inputs
- One single-ended/CMOS input
- Any input frequency from 1kHz to 1250MHz (1kHz to 300MHz for CMOS)
- Inputs continually monitored for activity and frequency accuracy
- Automatic or manual reference switching
- Low-Bandwidth DPLL
- Programmable bandwidth, 14Hz to 500HzClose
- Attenuates jitter up to several UI
- Freerun or digital hold on loss of all inputs
- Digitally controlled phase adjust
- Low-Jitter Fractional-N APLL and 3 Outputs
- Any Output Frequency from <1Hz to 1035MHz
- High-resolution fractional frequency conversion with 0ppm error
- Easy-to-configure, encapsulated design requires no external VCXO or loop filter components
- Each output has independent dividers
- Output Jitter Typically 0.16 to 0.28ps RMS (12kHz to 20MHz integration band)
- Outputs are CML or 2xCMOS, can interface to LVDS, LVPECL, HSTL, SSTL and HCSL
- In 2xCMOS 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
- Automatic self-configuration at power-up from external (ZL30252) or internal (ZL30253) EEPROM; up to four configurations, pin-selectable
- Numerically controlled oscillator mode
- Spread-spectrum modulation mode
- SPI or I2C processor Interface
- Tiny 5x5mm QFN package
- Easy-to-use evaluation software
