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maxim推出MAX14950均衡器/接收器改善Gen 3.0应用中的PCIe信号完

2011-01-15 00:00:00

maxim推出MAX14950超小尺寸均衡器/接收器，有效改善Gen 3.0应用中的PCIe信号完整性

The MAX14950 is a quad equalizer/redriver designed to improve PCI Express® (PCIe) signal integrity by providing programmable input equalization at its receiver and programmable redrive circuitry. The output circuitry reestablishes deemphasis lost on the board and compensates for circuit-board loss. The device permits optimal placement of key PCIe components. The device is useful with stripline, microstrip printed circuits, and balanced 100Ω cable.

The device is tailored for PCIe and features electrical idle and receiver detection on each channel. It is optimized for PCIe Gen III (8.0GT/s) and Gen II (5.0GT/s) data rates, while still handling Gen I (2.5GT/s).

The MAX14950 is available in a small, lead-free, 42-pin (3.5mm x 9.0mm) TQFN package for optimal layout and minimal space requirements. The device is specified over the 0°C to +70°C operating temperature range.

关键特性

Optimized for Generation III (8.0GT/s) and Generation II (5.0GT/s) with Generation I (2.5GT/s) Compatibility
Receive Detection Permits Completely Transparent, Software-Free Operation
Equalization Permits Placement of Up to 30in FR4
PCIe Gen III (8.0GT/s)-Compliant Input/Output Return Loss
Electrical Idle Detection
Very Low Latency: 160ps (typ) Propagation Delay
Random Jitter ≤ 1.5ps_RMS (max)
Deterministic Jitter ≤ 10.5ps_P-P (typ)
Four-Level-Programmable Input Equalization
Eight-Level-Programmable Output Emphasis
On-Chip 50Ω Input/Output Terminations
Single +3.3V Supply Operation
±5kV Human Body Model (HBM) Protection On All Pins
Space-Saving: 3.5mm × 9.0mm TQFN Package
Pin Compatible with MAX4950 PCIe Generation II Redriver/Equalizer