Rainbow Electronics MAX3983 - Manual

General Description
The MAX3983 is a quad copper-cable signal conditioner
that operates from 2.5Gbps to 3.2Gbps. It provides com-
pensation 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 preem-
phasis 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.
Applications
4x InfiniBand (4 x 2.5Gbps)
10Gbase-CX4 Ethernet (4 x 3.125Gbps)
10G Fibre Channel XAUI (4 x 3.1875Gbps)
4x Copper-Cable or Backplane Transmission
(1Gbps to 3.2Gbps)
Features
♦ Link Features
Span 20m with 24AWG, 15m with 28AWG
Span 0.5m of FR4 on Each Host
1.6W Total Power with 3.3V Supply
Loopback Function
♦ Cable Driver Features
Selectable Output Preemphasis
FR4 Input Equalization
Signal Detect for Each Channel
Output Disable
♦ Cable Receiver Features
Selectable FR4 Output Preemphasis
Cable Input Equalization
Signal Detect for Each Channel
Output Disable
MAX3983
Quad Copper-Cable Signal Conditioner
________________________________________________________________ Maxim Integrated Products 1
MAX3983
RX_SD1
RX_SD2
RX_SD3
RX_SD4
TX_SD1
TX_SD2
TX_SD3
TX_SD4
TX_OUT1
TX_OUT2
TX_OUT3
TX_OUT4
RX_IN1
RX_IN2
RX_IN3
RX_IN4
TX_IN1
TX_IN2
TX_IN3
TX_IN4
RX_OUT1
RX_OUT2
RX_OUT3
RX_OUT4
4.7k Ω 4.7k Ω
3V TO 5.5V 3V TO 5.5V
TO HOST
TX_ENABLE
RX_ENABLE
TX_PE0
RX_PE
TX_PE1
SERDES
TX
RX
≤0.5m
V CC [1:4]
3.3V
GND
POR
LOOPBACK TO HOST
0.01 µF 0.01 µF
TO MAX3983
4x COPPER CABLE ASSEMBLY
≤20m (24AWG)
≤15m (28AWG)
V CC OR
GND
C POR
Typical Application Circuit
Ordering Information
19-2928; Rev 0; 7/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART TEMP RANGE
PIN-
PACKAGE
PKG CODE
MAX3983UGK 0°C to +85°C 68 QFN G6800-4
Pin Configuration appears at end of data sheet.