ZL30251 Series

4-In, 3-Out Any-Any CML/CMOS Clock Generator

Catalog

4-In, 3-Out Any-Any CML/CMOS Clock Generator

Part	Package / Case	Output	PLL	Mounting Type	Number of Circuits	Supplier Device Package	Input	Frequency - Max [Max]	Voltage - Supply [Max]	Voltage - Supply [Min]	Ratio - Input:Output	Operating Temperature [Max]	Operating Temperature [Min]
Microchip Technology ZL30251LDF1
Microchip Technology ZL30251LDF1	32-VFQFN Exposed Pad	CML, CMOS	Yes with Bypass	Surface Mount	1	32-QFN (5x5)	CML, CMOS, Crystal	1.035 GHz	3.465 V	1.71 V	4:3	85 °C	-40 °C
Microchip Technology ZL30251LDG1	32-VFQFN Exposed Pad	CML, CMOS	Yes with Bypass	Surface Mount	1	32-QFN (5x5)	CML, CMOS, Crystal	1.035 GHz	3.465 V	1.71 V	4:3	85 °C	-40 °C

Catalog

4-In, 3-Out Any-Any CML/CMOS Clock Generator

Key Features

• * Four Input Clocks: One crystal/CMOS input, Two differential/CMOS inputs, One single-ended/CMOS input

• * Any input frequency from 9.72MHz to 1250MHz (9.72MHz to 300MHz for CMOS)

• * Clock selection by pin or register control

• * 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 as low as 0.16ps RMS (12kHz-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 glitch-less start/stop (stop high or low)

• * Automatic self-configuration at power-up from internal EEPROM; up to four configs, pin-selectable

• * SPI or I2C processor Interface

• * Numerically controlled oscillator mode

• * Spread-spectrum modulation mode

Description

[CREATE AND SAMPLE YOUR CUSTOM ZL30251 HERE](https://clockworks.microchip.com/microchip/design/inputZL) The ZL30251 is a flexible, high-performance, clock multiplier/generator. From any input clock frequency 9.72MHz to 1250MHz this device can produce frequency-locked output frequencies from 1Hz to 1035MHz and as many as 3 differential or 6 CMOS output clock signals. The ZL30251 has output jitter of 160fs RMS (12kHz to 20MHz). Automatic self-configuration from internal EEPROM allows clock signals to be available immediately after power-up or reset.