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MAX3872
Multirate Clock and Data Recovery with Limiting Amplifier
Multirate CDR with Limiting Amplifier Exceeds All SONET/SDH Jitter Specifications
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Status
Active: In Production.
Description
The MAX3872 is a compact, multirate clock and data
recovery with limiting amplifier for OC-3, OC-12, OC-24,
OC-48, OC-48 with FEC SONET/SDH and Gigabit
Ethernet (1.25Gbps/2.5Gbps) applications. Without using
an external reference clock, the fully integrated phase-locked
loop (PLL) recovers a synchronous clock signal
from the serial NRZ data input. The input data is then
retimed by the recovered clock, providing a clean data
output. An additional serial input (SLBI±) is available for
system loopback diagnostic testing. Alternatively, this
input can be connected to a reference clock to maintain a
valid clock output in the absence of data transitions. The
device also includes a loss-of-lock (active-low LOL) output.
The MAX3872 contains a vertical threshold control to
compensate for optical noise due to EDFAs in DWDM
transmission systems. The recovered data and clock
outputs are CML with on-chip 50Ω back termination on
each line. Its jitter performance exceeds all
SONET/SDH specifications.
The MAX3872 operates from a single +3.3V supply and
typically consumes 580mW. It is available in a 5mm x
5mm 32-pin thin QFN with exposed-pad package and
operates over a -40°C to +85°C temperature range.
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Data Sheet
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An evaluation kit is available: MAX3872EVKIT, MAX3874EVKIT
Key Features
- Multirate Data Input: 2.667Gbps (FEC), 2.488Gbps, 1.244Gbps, 622.08Mbps, 155.52Mbps, 1.25Gbps/2.5Gbps (Ethernet)
- Reference Clock Not Required for Data Acquisition
- Exceeds ANSI, ITU, and Bellcore SONET/SDH Jitter Specifications
- 2.7mUIRMS Jitter Generation
- 10mVP-P Input Sensitivity Without Threshold Adjust
- 0.65UIP-P High-Frequency Jitter Tolerance
- ±170mV Input Threshold Adjust Range
- Clock Holdover Capability Using Frequency-Selectable Reference Clock
- Serial Loopback Input Available for System Diagnostic Testing
- Loss-of-Lock (Active-Low LOL) Indicator
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Applications/Uses
- Access Networks
- Add/Drop Multiplexers
- Digital Cross-Connects
- DWDM Transmission Systems
- SONET/SDH Receivers and Regenerators
- SONET/SDH Test Equipment
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Key Specifications:
| Clock and Data Recovery |
| Part Number |
Functions |
Target Oper. Range
(Gbps) |
Data Rate
(Mbps) |
Data Rate
(Mbps) |
Multirate |
VSUPPLY
(V) |
ICC
(mA) |
I/O Type |
Package/Pins |
Oper. Temp.
(°C) |
Budgetary Price |
| min |
max |
typ |
See Notes |
| MAX3872 |
CDR |
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155 |
2667 |
Yes |
3.3 |
175 |
CML |
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-40 to +85 |
$30.28 @1k |
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See All Clock and Data Recovery (6)
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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
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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| MAX3872AETJ+
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3872AETJ+T
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +125°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3872EGJ
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Active |
QFN;32 pin;26 mm²
Outline Drawing:21-0091 (PDF)
Land Pattern: 90-0279 (PDF)
Use pkgcode/variation: G3255-1*
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-40°C to +85°C
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RoHS/Lead-Free: No
Materials Analysis |
| MAX3872EGJ-T
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Active |
QFN;32 pin
Land Pattern: Not Available
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-40°C to +85°C
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See data sheet
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| MAX3872ETJ+
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+3*
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-40°C to +85°C
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RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX3872ETJ+T
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Active |
TQFN;32 pin;26 mm²
Outline Drawing:21-0140 (PDF)
Land Pattern: 90-0001 (PDF)
Use pkgcode/variation: T3255+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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More Information
Didn't Find What You Need?
Information Index
Document Ref.: 19-2709
Rev 3;
2007-03-06
This page last modified: 2007-08-03
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