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MAX3671
Low-Jitter Frequency Synthesizer with Selectable Input Reference
Industry's Best Jitter Performance Exceeds SerDes Reference Clock Specification
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Status
Active: In Production.
Description
The MAX3671 is a low-jitter frequency synthesizer that accepts two reference clock inputs and generates nine phase-aligned outputs. The device features 40kHz jitter transfer bandwidth, 0.3psRMS (12kHz to 20MHz) integrated phase jitter, and best-in-class power-supply noise rejection (PSNR), making it ideal for jitter cleanup, frequency translation, and clock distribution in Gigabit Ethernet applications.
The MAX3671 operates from a single +3.3V supply and typically consumes 400mW. The IC is available in an 8mm x 8mm, 56-pin TQFN package, and operates from -40°C to +85°C.
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Data Sheet
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An evaluation kit is available: MAX3671EVKIT
Key Features
- Two Reference Clock Inputs: LVPECL
- Nine Phase-Aligned Clock Outputs: LVPECL
- Input Frequencies: 62.5MHz, 125MHz, 250MHz, 312.5MHz
- Output Frequencies: 62.5MHz, 125MHz, 156.25MHz, 250MHz, 312.5MHz
- Low-Jitter Generation: 0.3psRMS (12kHz to 20MHz)
- Clock Failure Indicator for Both Reference Clocks
- External Feedback Provides Zero-Delay Capability
- Low Output Skew: 20ps Typical
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Applications/Uses
- Clock Distribution
- Frequency Translation
- Gigabit Ethernet Routers and Switches
- Jitter Cleanup
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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 |
| MAX3671 |
| Clock Distribution | | Ethernet | | Frequency Translation | | Jitter Cleanup |
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62.5 |
312.5 |
62.5 |
312.5 |
Fixed |
LVPECL |
9 |
1 |
No |
0.3 |
3.3 |
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$10.57 @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
Functional Diagram
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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| MAX3671ETN+
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Active |
TQFN;56 pin;65.6 mm²
Outline Drawing:21-0135 (PDF)
Land Pattern: 90-0047 (PDF)
Use pkgcode/variation: T5688+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3671ETN+T
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Active |
TQFN;56 pin;65.6 mm²
Outline Drawing:21-0135 (PDF)
Land Pattern: 90-0047 (PDF)
Use pkgcode/variation: T5688+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
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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Similar Products by Function
Evaluation Kits
More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-4437
Rev 0;
2009-02-06
This page last modified: 2009-07-08
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