MAX4950ACTX+ Maxim Integrated Products, MAX4950ACTX+ Datasheet

IC PCIE REDRIVER DUAL 36-TQFN

MAX4950ACTX+

Manufacturer Part Number
MAX4950ACTX+
Description
IC PCIE REDRIVER DUAL 36-TQFN
Manufacturer
Maxim Integrated Products
Type
Equalizerr
Datasheets

Specifications of MAX4950ACTX+

Voltage - Supply
3.3V
Mounting Type
Surface Mount
Package / Case
36-TQFN Exposed Pad
Supply Voltage (max)
3.6 V
Supply Voltage (min)
3 V
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Propagation Delay Time
280 ps
Supply Voltage Range
3V To 3.6V
Operating Temperature Range
0°C To +70°C
Digital Ic Case Style
TQFN
No. Of Pins
36
Peak Reflow Compatible (260 C)
Yes
Termination Type
SMD
Rohs Compliant
Yes
Filter Terminals
SMD
Leaded Process Compatible
Yes
No. Of Channels
2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Drivers/receivers
-
Protocol
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
The MAX4950A dual PCI Express
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 capa-
ble 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 opti-
mal layout and minimal space requirements. The
MAX4950A is specified over the 0°C to +70°C commer-
cial operating temperature range.
PCI Express is a registered trademark of PCI-SIG Corp.
19-4583; Rev 0; 4/09
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.
Servers
Industrial PCs
Test Equipment
Computers
External Graphics Applications
Communications Switchers
Storage Area Networks
________________________________________________________________ Maxim Integrated Products
General Description
Dual PCI Express Equalizer/Redriver
®
Applications
(PCIe) equalizer/
♦ Single +3.3V Supply Operation
♦ PCIe Gen I (2.5GT/s) and Gen II (5.0GT/s) Capable
♦ Very Low Latency with 280ps (typ) Propagation
♦ 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
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
T = Tape and reel.
MAX4950ACTX+T
TOP VIEW
Delay
O_AMPA
*CONNECT EXPOSED PAD (EP) TO GND.
INEQA0
INEQA1
ODEA0
ODEA1
Excellent Differential Return Loss:
N.C.
N.C.
V
V
CC
CC
8dB (f = 1.25GHz to 2.5GHz)
PART
28
29
30
31
32
33
34
35
36
27
1
+
26
2
25
3
TEMP RANGE
Ordering Information
0°C to +70°C
24
4
MAX4950A
TQFN
23
5
Pin Configuration
22
6
21
7
20
8
*EP
PIN-PACKAGE
19
9
36 TQFN-EP*
Features
18
17
16
15
14
13
12
11
10
N.C.
V
INEQB0
INEQB1
O_AMPB
ODEB0
ODEB1
V
N.C.
CC
CC
1

Related parts for MAX4950ACTX+

MAX4950ACTX+ Summary of contents

Page 1

... 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 Applications PART MAX4950ACTX+T + Denotes a lead(Pb)-free/RoHS-compliant package Exposed pad Tape and reel. TOP VIEW N.C. 28 ...

Page 2

Dual PCI Express Equalizer/Redriver ABSOLUTE MAXIMUM RATINGS (Voltages referenced to GND.) V ........................................................................-0.3V to +4.0V CC All Other Pins (Note 1)................................-0. Continuous Current IN_P, IN_M, OUT_P, OUT_M ............±30mA Peak Current IN_P, IN_M, OUT_P, OUT_M (pulsed for 1µs, 1% ...

Page 3

Dual PCI Express Equalizer/Redriver ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 75nF coupling capacitor on each output otherwise noted. Typical values are at V PARAMETER SYMBOL Differential Output Return Loss RL (Note 5) Common-Mode ...

Page 4

Dual PCI Express Equalizer/Redriver ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V 75nF coupling capacitor on each output otherwise noted. Typical values are at V PARAMETER SYMBOL V TX-IDLE- Electrical Idle Detect Threshold THRESH Output ...

Page 5

Dual PCI Express Equalizer/Redriver (V = +3.3V +25°C, unless otherwise noted INEQ_0 = INEQ_1 = 0, O_AMP_ = 200mV , ODE_0 = 0, ODE_1 = 0 IN P-P 600 400 200 0 -200 ...

Page 6

Dual PCI Express Equalizer/Redriver (V = +3.3V +25°C, unless otherwise noted INEQ_0 = 1, INEQ_1 = 0, O_AMP_ = 0, V WITH 6in STRIPLINE ODE_0 = ODE_1 = 0 600 400 200 0 -200 -400 -600 ...

Page 7

Dual PCI Express Equalizer/Redriver PIN NAME 19, GND Ground 22, 24 INAP Noninverting Input A 3 INAM Inverting Input A Enable Input. Drive EN low for standby mode. Drive EN high for normal mode. ...

Page 8

Dual PCI Express Equalizer/Redriver MAX4950A INEQ_0 INEQ_1 IN_P IN_M EQUALIZER R HI ELECTRICAL IDLE DETECTOR Figure 2. Block Diagram of Each Channel 8 _______________________________________________________________________________________ EN RX_DET O_AMP_ GLOBAL POWER SAVE RECEIVER DETECT MANAGER EQUALIZER ODE_0 ODE_1 OUT_P OUT_M ...

Page 9

Dual PCI Express Equalizer/Redriver Detailed Description The MAX4950A dual equalizer/redriver is designed to support both Gen I (2.5GT/s) and Gen II (5.0GT/s) PCIe data rates. The device contains two identical drivers with idle/receive detect on each lane and equalization to ...

Page 10

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products ...

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