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MAX3629
+3.3V, Low-Jitter, Precision Clock Generator with Multiple Outputs
Generates All Ethernet Frequencies with Multiple Outputs Using a Low-Frequency Crystal
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Status
Active: In Production.
Description
The MAX3629 is a low-jitter precision clock generator optimized for network applications. The device integrates a crystal oscillator and a phase-locked loop (PLL) to generate high-frequency clock outputs for Ethernet applications.
Maxim's proprietary PLL design features ultra-low jitter (0.4psRMS) and excellent power-supply noise rejection (PSNR), minimizing design risk for network equipment.
The MAX3629 contains five LVDS outputs and three LVCMOS outputs. The output frequencies are selectable among 125MHz, 156.25MHz, and 312.5MHz by pin control.
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Data Sheet
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Key Features
- Crystal Oscillator Interface: 25MHz
- OSC_IN Interface:
- PLL Enabled: 25MHz
- PLL Disabled: 20MHz to 320MHz
- Outputs:
- One LVDS Output at 125MHz/156.25MHz/312.5MHz (Selectable with FSELA)
- Four LVDS Outputs at 125MHz/156.25MHz/312.5MHz (Selectable with FSELB)
- Three LVCMOS Outputs at 125MHz/156.25MHz (Selectable with FSELB)
- Low Phase Jitter: 0.4psRMS (12kHz to 20MHz)
- Excellent PSNR
- Operating Temperature Range: 0°C to +70°C
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Applications/Uses
- Ethernet Networking Equipment
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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 |
Spread Spectrum |
Output Jitter
(ps) |
VSUPPLY
(V) |
Package/Pins |
Budgetary Price |
| min |
max |
min |
max |
RMS |
See Notes |
| MAX3629 |
Ethernet |
25 |
25 |
125 |
312.5 |
Fixed |
|
8 |
1 |
No |
0.4 |
3.3 |
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$9.41 @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
Typical Operating Circuit
Application Notes
Product Guides
Reliability Reports
Software/Models
Ordering Information
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Part Number
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Free
Sample |
Buy |
Status
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Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
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Temp |
RoHS/Lead-Free?
Materials Analysis
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| MAX3629CTJ+
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0013 (PDF)
Use pkgcode/variation: T3255+5*
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0°C to +70°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3629CTJ+T
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Active |
QFN;
Land Pattern: Not Available
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0°C to +70°C
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See data sheet
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| MAX3629EVKIT+
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Active |
KIT;
Land Pattern: Not Available
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See data sheet
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Notes:
- Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
- Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
- Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
- * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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Information Index
Document Ref.: 19-4467
Rev 0;
2009-02-10
This page last modified: 2009-07-08
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