The MAX3983 is a quad copper-cable signal conditioner from Maxim Integrated. It operates from 2.5Gbps to 3.2Gbps and provides compensation for 4x copper InfiniBand and 10Gbase-CX4 Ethernet links, allowing spans of 20m with 24AWG and 15m with 28AWG. The cable driver section provides four selectable preemphasis levels. The input to the cable driver compensates for up to 0.5m of FR4 circuit board material. The cable receiver section provides additional fixed input equalization while offering selectable preemphasis to drive FR4 circuit boards up to 0.5m. The MAX3983 also features signal detection on all eight inputs and internal loopback that allows for diagnostic testing. It is packaged in a 10mm x 10mm, 68-pin QFN and operates from 0°C to +85°C.
The MAX3983 is a quad copper‑cable signal conditioner that operates from 2.5 Gbps to 3.2 Gbps. It supports 4× InfiniBand, 10Gbase‑CX4 Ethernet and 10G Fibre Channel XAUI links, providing up to 20 m span with 24 AWG or 15 m with 28 AWG copper cable. The device includes four selectable pre‑emphasis levels, FR4 input equalization, signal‑detect on all eight inputs, and an internal loopback for diagnostics.
Electrical specifications include a supply voltage range of –0.5 V to +6 V, continuous power dissipation of 2.7 W at 85 °C, operating temperature from –55 °C to +150 °C, and a 68‑pin QFN package (10 mm × 10 mm). Detailed pin functions, output swing, return loss, jitter, and pre‑emphasis characteristics are provided for both the transmitter and receiver sections.
| Supply Voltage (VCC) | -0.5 V to +6.0 V |
|---|---|
| Operating Temperature Range | 0 °C to +85 °C |
| Junction Temperature Range | -55 °C to +150 °C |
| Package | 68‑Pin QFN, 10 mm × 10 mm |
| Number of Pins | 68 |
| Output Swing (TX low) | 30 mV P‑P |
| Pre‑emphasis Levels | Four selectable levels |
The MAX3983 can span up to 20 m with 24 AWG copper cable.
It provides four transmit and four receive channels, making it a quad‑channel device.
The device operates from 0 °C to +85 °C.
It is supplied in a 68‑pin QFN package measuring 10 mm × 10 mm.