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MAX3624A
Low-Jitter, Precision Clock Generator with Four Outputs
Subpicosecond-Jitter PLL Clock Generator Replaces Crystal Oscillator Module
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Status
Active: In Production.
Description
The MAX3624A is a low-jitter precision clock generator optimized for networking applications. The device integrates a crystal oscillator and a phase-locked loop (PLL) clock multiplier to generate high-frequency clock outputs for Ethernet, Fibre Channel, SONET/SDH, and other networking applications.
Maxim's proprietary PLL design features ultra-low jitter (0.36psRMS) and excellent power-supply noise rejection, minimizing design risk for network equipment.
The MAX3624A has three LVPECL outputs and one LVCMOS output. Selectable output dividers and a selectable feedback divider allow a range of output frequencies.
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Data Sheet
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An evaluation kit is available: MAX3624AEVKIT
Key Features
- Crystal Oscillator Interface: 19.375MHz to 27MHz
- CMOS Input: 19MHz to 40.5MHz
- Output Frequencies
- Ethernet: 62.5MHz, 125MHz, 156.25MHz, 312.5MHz
- Fibre Channel: 106.25MHz, 159.375MHz, 212.5MHz, 318.75MHz
- SONET/SDH: 77.76MHz, 155.52MHz, 311.04MHz
- Low Jitter
- 0.14psRMS (1.875MHz to 20MHz)
- 0.36psRMS (12kHz to 20MHz)
- Excellent Power-Supply Noise Rejection
- No External Loop Filter Capacitor Required
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Applications/Uses
- Ethernet Networking Equipment
- Fibre Channel Storage Area Network
- SONET/SDH Network
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Key Specifications:
| Clock Generators |
| Part Number |
Applications |
fIN
(MHz) |
fIN
(MHz) |
fOUT
(MHz) |
fOUT
(MHz) |
Fixed or Continuous Frequency |
Output Levels |
Out-
puts |
PLLs |
Program-
mability |
Spread Spectrum |
Output Jitter
(ps) |
VSUPPLY
(V) |
Package/Pins |
Budgetary Price |
| min |
max |
min |
max |
RMS |
See Notes |
| MAX3624A |
| Ethernet | | Fibre Channel | | InfiniBand | | PCIe | | SONET/SDH |
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18 |
40.5 |
62.5 |
312.5 |
Fixed |
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4 |
1 |
Pin |
No |
0.14 |
3.3 |
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$8.98 @1k |
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See All Clock Generators (34)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Block Diagram
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Information Index
Document Ref.: 19-5005
Rev 0;
2009-10-27
This page last modified: 2010-02-23
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