MAX3872
NOT RECOMMENDED FOR NEW DESIGNSMultirate Clock and Data Recovery with Limiting Amplifier
Multirate CDR with Limiting Amplifier Exceeds All SONET/SDH Jitter Specifications
- Part Models
- 2
- 1ku List Price
- Starting From $60.48
Part Details
- 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
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.
Applications
- Access Networks
- Add/Drop Multiplexers
- Digital Cross-Connects
- DWDM Transmission Systems
- SONET/SDH Receivers and Regenerators
- SONET/SDH Test Equipment
Documentation
Data Sheet 1
Reliability Data 1
Application Note 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| MAX3872ETJ+ | 32-LFCSP-5X5X0.75 | ||
| MAX3872ETJ+T | 32-LFCSP-5X5X0.75 |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
IBIS Model 2
Evaluation Kits
Evaluation Kit for the MAX3872, MAX3874
Evaluation Kit for the MAX3872, MAX3874