MAX3984 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – 1Gbps to 10Gbps Preemphasis Driver with Receive Equalizer

19-0868; Rev 0; 7/07
1Gbps to 10Gbps Preemphasis Driver with
Receive Equalizer
General Description
The MAX3984 is a single-channel, preemphasis driver
with input equalization that operates from 1Gbps to
10.3Gbps. It provides compensation for copper links,
such as 8.5Gbps Fibre Channel and 10.3Gbps
Ethernet, allowing spans of up to 10m with 24 AWG
cable. The driver provides four selectable preemphasis
levels, and the selectable input equalizer compensates
for up to 10in of FR-4 circuit board material at 10Gbps.
The MAX3984 also features SFP-compliant loss-of-sig-
nal (LOS) detection and TX_DISABLE. Selectable out-
put swing reduces EMI and power consumption. The
MAX3984 is packaged in a lead-free, 3mm x 3mm,
16-pin thin QFN and operates from a 0°C to +85°C tem-
perature range.
Applications
8.5Gbps Fibre Channel Active Cable Assemblies
10.3Gbps Ethernet
STM-64
Pin Configuration appears at end of data sheet.
Features
♦ Drives Up to 10m of 24 AWG Cable
♦ Drives Up to 30in of FR-4
♦ Selectable 1000mV_P-P or 1200mV_P-P Differential
Output Swing
♦ Selectable Output Preemphasis
♦ Selectable Input Equalization
♦ LOS Detection with Built-In Squelch
♦ Transmit Disable
♦ Hot Pluggable
Ordering Information
PART
TEMP
RANGE
PIN-PACKAGE
PKG
CODE
MAX3984UTE+ 0°C to +85°C 16 Thin QFN-EP* T1633F-3
+Denotes a lead-free package.
*EP = Exposed pad.
Typical Operating Circuits
DISK
ENCLOSURE
SWITCH
OR
SERDES
Tx+
Tx-
Rx+
Rx-
≤ 5V
≥ 4.7kΩ
+3.3V
TX_DISABLE VCC
PE0
VCC
PE1
LOS
OR
GND IN_LEV MAX3984
OUT_LEV
0.01μF
IN+
OUT+
IN-
0.01μF
GND
OUT-
+3.3V
0.01μF
OUT+
IN+
OUT-
IN-
0.01μF _PE0
VCC
PE1 MAX3984
OR
GND
IN_LEV
OUT_LEV
LOS
GND
ACTIVE CABLE ASSEMBLY
≤ 10m (24 AWG)
UP TO 10Gbps
COPPER CABLE
39Ω
DIFFERENTIAL
100Ω TWIN-AX _{0.01μF 22pF}
39Ω
22pF 0.01μF
0.01μF 22pF
39Ω
22pF 0.01μF
39Ω
FABRIC SWTCH
≤ 5V
+3.3V
LOS
PE0
PE1
VCC
OR
MAX3984 IN_LEV GND
OUT_LEV
0.01μF
IN+
OUT+
IN-
GND
OUT-
0.01μF
RPULLUP
≥ 4.7kΩ
SWITCH
OR
SERDES
Rx+
Rx-
+3.3V
OUT+
VCC
0.01μF
IN+
Tx+
OUT-
IN-
Tx-
PE0 ^0.01μF
LOS MAX3984 PE1
VCC
OR
IN_LEV
GND
OUT_LEV
GND ^{TX_DISALBOLSE}
Typical Operating Circuits continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.