General Description

The IDT8N0Q001 is a Quad-Frequency Programmable Clock

Oscillator with very flexible frequency programming capabilities. The

device uses IDT’s fourth generation FemtoClock? NG technology for

an optimum of high clock frequency and low phase noise

performance. The device accepts 2.5V or 3.3V supply and is

packaged in a small, lead-free (RoHS 6) 10-lead ceramic 5mm x

7mm x 1.55mm package.

Besides the 4 default power-up frequencies set by the FSEL0 and

FSEL1 pins, the IDT8N0Q001 can be programmed via the I2C

interface to output clock frequencies between 15.476 to 260MHz to a

very high degree of precision with a frequency step size of

435.9Hz ÷ N (N: PLL post divider). Since the FSEL0 and FSEL1 pins

are mapped to 4 independent PLL M and N divider registers (P, MINT,

MFRAC and N), reprogramming those registers to other frequencies

under control of FSEL0 and FSEL1 is supported. The extended

temperature range supports wireless infrastructure,

telecommunication and networking end equipment requirements.

特性 Features

? Fourth generation FemtoClock? NG technology

? Programmable clock output frequency from

15.476MHz to 260MHz

? Four power-up default frequencies (see part number order codes),

re-programmable by I2C

? I

2C programming interface for the output clock frequency and

internal PLL control registers

? Frequency programming resolution is 435.9Hz ÷ N

? One 2.5V, 3.3V LVCMOS clock output

? Two control inputs for the power-up default frequency

? LVCMOS/LVTTL compatible control inputs

? RMS phase jitter @ 156.25MHz (12kHz - 20MHz):

0.250ps (typical)

? RMS phase jitter @ 156.25MHz (1kHz - 40MHz):

0.290ps (typical)

? 2.5V or 3.3V supply

? -40°C to 85°C ambient operating temperature

? Available in Lead-free (RoHS 6) package