MAX3991 10Gbps Clock And Data Recovery With Limiting Amplifier

The MAX3991 is a 10Gbps Clock and Data Recovery (CDR) with Limiting Amplifier IC for XFP optical receivers. The MAX3991 and the MAX3992 (CDR with equalizer) form a Signal Conditioner chipset for use in XFP transceiver modules. The chipset is XFI compliant and offers multirate operation for data rates from 9.95Gbps to 11.1Gbps. The MAX3991 has 7mVP-P input sensitivity (BER < 10-12), which allows direct connection to a transimpedance Amplifier without the use of a stand-alone Limiting Amplifier The phase-locked loop (PLL) is optimized for jitter tolerance and provides 0.6UI of high-frequency tolerance in SONET Ethernet and Fibre-Channel applications. The MAX3991 output provides 27% margin to the XFP eye mask specification. An AC-based power detector toggles the loss-of-signal (LOS) output when the input signal swing is below the user-programmed assert threshold. An external reference Clock with frequency equal to 1/64 or 1/16 of the serial data rate is used to aid in frequency acquisition. A loss-of-lock (LOL) indicator is provided to indicate the lock status of the receiver PLL The MAX3991 is available in a 4mm x 4mm, 24-pin QFN package. It consumes 350mW from a single +3.3V supply and operates over the 0C to +85C temperature range.
By Maxim Integrated Products
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MAX3991 Pinout, Pinouts
MAX3991 pinout,Pin out
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