PI6LC48P0401 Datasheet, PDF (1/10 Pages) Pericom Semiconductor Corporation – 4-Output LVPECL Networking Clock Generator

PI6LC48P0401
4-Output LVPECL Networking Clock Generator
Features
ÎÎFour differential LVPECL output pairs
ÎÎSelectable crystal oscillator interface or LVCMOS/LVTTL
single-ended clock input
ÎÎSupports the following output frequencies: 156.25MHz,
125MHz, 62.5MHz
ÎÎRMS phase jitter @ 156.25MHz, using a 25MHz crystal
(1.875MHz – 20MHz): 0.23ps (typical)
ÎÎRMS phase jitter @ 156.25MHz, using a 25MHz crystal
(12kHz – 20MHz): 0.28ps (typical)
ÎÎFull 3.3V or 2.5V supply modes
ÎÎ-40°C to 85°C ambient operating temperature
ÎÎAvailable in lead-free packages
Applications
ÎÎNetworking systems
Block Diagram
Description
The PI6LC48P0401 is a 4-output LVPECL synthesizer opti-
mized to generate Ethernet reference clock frequencies and is a
member of Pericom’s HiFlex family of high performance clock
solutions. Using a 25MHz crystal, the following frequencies can
be generated based on the settings of 2 frequency select pins
(N_SEL[1:0]): 156.25MHz, 125MHz, 62.5MHz.
The PI6LC48P0401 uses Pericom’s proprietary low phase noise
VCO technology and can achieve less than 1ps typical rms
phase jitter, so it is ideal for Ethernet interface in all kind of
systems.
N_SEL[1:0]
PLL_Bypass
XTAL_IN
XTAL_OUT
Ref_IN
IN_SEL
OSC
M_reset
2
Phase
Detector
VCO
M = 25 (fixed)
N_SEL[1:0]
0 0 ÷4
0 1 ÷5
1 0 ÷10
1 1 not used
CLK0
CLK0#
CLK1
CLK1#
CLK2
CLK2#
CLK3
CLK3#
14-0203
1
www.pericom.com
PI6LC48P0401
Rev.D
11/7/2014