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MAX4950A：Dual PCI Express Equalizer/Redriver

Ultra-Small Equalizer/Redriver Improves PCIe Signal Integrity Across Systems

The MAX4950A dual PCI Express® (PCIe) equalizer/redriver operates from a single +3.3V supply. This device improves signal integrity at the receiver through programmable input equalization and redrive circuitry with output deemphasis to correct for high-frequency losses. This device permits optimal placement of key PCIe components and longer runs of stripline, microstrip, or cable. The MAX4950A contains two identical channels capable of equalizing PCIe Gen I (2.5GT/s) and Gen II (5.0GT/s) signals. The MAX4950A features electrical idle and receiver detection on each channel and a power-saving mode. The MAX4950A is available in a small 36-pin (6.0mm x 6.0mm) TQFN package with flowthrough traces for optimal layout and minimal space requirements. The MAX4950A is specified over the 0°C to +70°C commercial operating temperature range.

Key Features Single +3.3V Supply Operation PCIe Gen I (2.5GT/s) and Gen II (5.0GT/s) Capable Excellent Differential Return Loss: ≥ 8dB (f = 1.25GHz to 2.5GHz) Very Low Latency with 280ps (typ) Propagation Delay Individual Lane Detection Three-Level Programmable Input Equalization Three-Level Programmable Output Deemphasis Standard, -2.5dB Programmable Output Levels On-Chip 50Ω Input/Output Terminations Space-Saving, 6.0mm x 6.0mm TQFN Package

MAX4950A: Typical Application Circuit Applications/Uses Communications Switchers Computers External Graphics Applications Industrial PCs Servers Storage Area Networks Test Equipment

DataSheet

Parametrics

Quality and Environmental Data

• MAX4950A.pdf

Ordering Information