Rainbow Electronics MAX3622 - Manual

MAX3622
Low-Jitter, Precision Clock Generator
with Two Outputs
________________________________________________________________ Maxim Integrated Products 1
19-2456; Rev 0; 11/07
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE
General Description
The MAX3622 is a low-jitter precision clock generator
optimized for networking applications. The device inte-
grates a crystal oscillator and a phase-locked loop
(PLL) clock multiplier to generate high-frequency clock
outputs for Ethernet and other networking applications.
Maxim’s proprietary PLL design features ultra-low jitter
(0.36ps
RMS ) and excellent power-supply noise rejec-
tion, minimizing design risk for network equipment.
The MAX3622 has one LVPECL output and one
LVCMOS output. It is available in a 16-pin TSSOP pack-
age and operates over the 0°C to +70°C temperature
range.
Applications
Ethernet Networking Equipment
Features
♦ Crystal Oscillator Interface: 25MHz Typical
♦ Output Frequencies: 125MHz and 156.25MHz
♦ Low Jitter
0.14ps RMS (1.875MHz to 20MHz)
0.36ps RMS (12kHz to 20MHz)
♦ Excellent Power-Supply Noise Rejection
♦ No External Loop Filter Capacitor Required
Ordering Information
CRYSTAL
OSCILLATOR
X_IN
X_OUT
PFD FILTER
RESET
RESET
RESET LOGIC/POR
÷ 25
RESET
ч 4
ч 5
VCO
LVCMOS
BUFFER
QA_C
QAC_OE
LVPECL
BUFFER
QB
QB_OE
QB
MAX3622
RESET
625MHz
25MHz
33pF
27pF
Block Diagram
+ Denotes a lead-free package.
Typical Application Circuit and Pin Configuration appear
at end of data sheet.
PART TEMP RANGE
PIN-
PACKAGE PKG
CODE
MAX3622CUE+ 0 °C to +70°C 16 TSSOP U16-2