Analog Devices Inc.

Category: Amplifiers and Comparators

The MAX3945 is a +3.3V, multirate, low-power limiting amplifier optimized for Fibre Channel and Ethernet transmission systems at data rates up to 11.3Gbps. The high-sensitivity limiting amplifier limits the signal generated by a transimpedance amplifier into a CML-level differential output signal. All differential inputs and outputs (I/O) are optimally back terminated for 50Ω transmission line PCB design. The MAX3945's dual-path limiting amplifier has programmable filtering to optimize sensitivity for different data rates and to suppress relaxation oscillations that could occur in some optical systems. The MAX3945 incorporates two loss-of-signal (LOS) circuits and a programmable time mask for the LOS output.A 3-wire digital interface reduces the pin count and enables control of LOS threshold, LOS polarity, LOS mode, CML output level, input offset correction,receive (Rx) polarity, Rx input filter, and Rx deemphasis without the need for external components.The MAX3945 is packaged in a 3mm x 3mm, 16-pin TQFN package.Applications10G PON ONU10GBASE-SR/LR SFP+ Optical Transceiver1x/2x/4x/8x SFF/SFP/SFP+ MSA Fibre-Channel Optical Transceiver

$4.76 - $11.73