General Description
The MAX9311 evaluation kit (EV kit) includes the
MAX9311 low-skew, 1-to-10 differential driver designed
for clock distribution. The MAX9311 EV kit supports
LVECL/LVPECL testing up to 3GHz. The kit allows
selection of two sources and reproduces the selected
signal at 10 identical differential outputs. Inputs can be
differential or single ended. Single-ended input opera-
tion is achieved by using the on-chip reference, VBB.
The MAX9311 EV kit can also be used to evaluate the
MAX9312, MAX9313, and MAX9314.
Features
♦Controlled 50ΩImpedance: Microstrip
♦Input/Output Line Lengths Matched to < 1.5ps
♦LVPECL/LVECL and Differential HSTL Supply
Range
VCC - VEE = 2.25V - 3.8V
♦Footprint Compatible with MC100LVEP111
(MAX9311)
♦Fully Assembled and Tested
Quick Start
The MAX9311 is specified with outputs terminated with
50Ωto VCC - 2V. This EV kit sets VCC = +2V and uses
the 50Ω-to-ground inputs of an oscilloscope to both
measure and terminate the MAX9311 outputs. With VCC
= +2V and VEE varied from -0.25V to -1.8V, the device
sees a supply of 2.25V to 3.8V with the output termina-
tion voltage equaling zero (VCC - 2V).
For 3.3V operation, for example, set VCC = +2V and
VEE = -1.3V. Use 50Ωcoax cables to connect the
MAX9311 outputs to a scope with inputs set for 50Ω.
The scope inputs provide a 50Ωtermination to zero.
Input signals are referred to the shifted VCC and VEE
supplies. The coax cables and 50Ωscope input pro-
vide a high bandwidth connection without the use of
probes.
The MAX9311 EV kit is fully assembled and tested. Do
not turn on the power supplies until all connections
are complete.
Evaluates: MAX9311–MAX9314
MAX9311 Evaluation Kit
________________________________________________________________ Maxim Integrated Products 1
19-2186; Rev 0; 10/01
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.
Ordering Information
PART TEMP. RANGE IC PACKAGE
MAX9311EVKIT 0°C to +70°C 32 LQFP
Component List
DESIGNATION QTY DESCRIPTION
C1, C7 2
10µF, 10V tantalum capacitors
(B case)
AVX TAJB106K010R Sprague
293D106X9016B2T
C2, C6, C9,
C11, C12, C14 6 0.1µF ceramic capacitors (0603)
C3, C4, C5, C8,
C10, C13, C15 7 0.01µF ceramic capacitors (0603)
R1–R9,
R30–R34 14 100Ω ±1% 1/8W resistors (1206)
R10–R29 20 49.9Ω ±1% 1/16W resistors
(0603)
J1–J26 26 SMA connectors (PC edge mount)
EFJohnson 142-0701-801
U1 1 MAX9311 (32 LQFP)
(no exposed paddle)
SUPPLIER PHONE FAX WEBSITE
AVX 843-946-0238 843-626-3123 www.avxcorp.com
Sprague-
Vishay 402-563-6866 402-563-6296 www.vishay.com
Component Suppliers
Note: When contacting suppliers, please indicate that you are
using the MAX9311–MAX9314.
Evaluates: MAX9311–MAX9314
Minimum Required Equipment
•Five matched SMA-male-to-SMA-male 50Ωcoax
cables for inputs: CLKSEL, CLK0, CLK0, CLK1, and
CLK1
•Two matched SMA-male-to-SMA-male 50Ωcoax
cables for outputs: Q0 and Q0
•Two differential adjustable clock sources like the
Agilent 8133A 3GHz pulse generator
•One single-ended adjustable clock select (CLKSEL)
source
•One 10GHz bandwidth oscilloscope with 50Ωinput
impedance like the Tektronix 11801C digital sam-
pling oscilloscope with the SD-24 sampling head
•Two power supplies
Power supply 1: +2V with 1A current capability
Power supply 2: adjustable -0.25V to -1.8V with
1A current capability
Procedure
1) Connect two of the five matched input cables to the
first differential clock source. Then connect the other
end of the cables to CLK0 and CLK0 on the
MAX9311 EV kit board.
2) Connect two of the five matched input cables to the
second differential clock source. Then connect the
other end of the cables to CLK1 and CLK1 on the
MAX9311 EV kit board.
3) Connect one of the five matched input cables to the
single-ended clock select source. Then connect the
other end of the cable to CLKSEL on the MAX9311
EV kit board.
4) Unsolder and remove the termination resistors locat-
ed on the Q0 and Q0 outputs (R28 and R29). Make
sure the input impedance of the oscilloscope is 50Ω.
5) Connect the two matched output cables to the oscil-
loscope. Then connect the other end of the cables
to Q0 and Q0 on the MAX9311 EV kit board.
6) Connect a +2VDC power supply to the pads labeled
VCC on the MAX9311 EV kit board. This ensures
that the outputs are loaded with 50Ωto VCC - 2V.
7) Connect a -1.3VDC power supply to the pads
labeled VEE on the MAX9311 EV kit board.
8) Configure the adjustable clock sources to the
desired input levels defined in the MAX9311/
MAX9313 IC data sheet. Note that VCC = +2V.
9) Enable all clock sources.
10) Verify the timing of the waveforms using the oscillo-
scope.
Detailed Description
Clock and Clock Select Inputs
All clock inputs are located on the left edge of the
MAX9311 EV kit board. The board provides SMA con-
nectors and 50Ωtermination for all clock inputs. The
MAX9311 features an on-chip reference voltage, VBB,
allowing single-ended operation. Connect VBB to one of
the differential inputs for single-ended operation.
Single-ended operation is limited to 3V ≤(VCC - VEE) ≤
3.8V. Differential operation can be used throughout the
full supply range: 2.25V ≤(VCC - VEE) ≤3.8V.
The clock select input accepts a single-ended input ref-
erenced to VCC. The clock select input has its own
SMA connector and 50Ωtermination on the board.
Outputs
The 10 differential outputs are in numeric order and are
located on the top, right, and bottom edges of the
MAX9311 EV kit board. All outputs are terminated with
50Ωon the board. Note: When analyzing an output,
remove the corresponding output termination resistor
on the MAX9311 EV kit board. (The output is connected
to test equipment that has a 50Ωinput impedance.)
MAX9311 Evaluation Kit
2 _______________________________________________________________________________________
Evaluates: MAX9311–MAX9314
MAX9311 Evaluation Kit
_______________________________________________________________________________________ 3
MAX9311
R23
49.9Ω
1%
Q3
2
1
R22
49.9Ω
1%
Q3
2
1
R21
49.9Ω
1%
Q4
2
1
R20
49.9Ω
1%
Q4
2
1
R19
49.9Ω
1%
Q5
2
1
R18
49.9Ω
1%
Q5
2
1
R30
100Ω
1%
CLKSEL
CLKSEL
2
1
Q1
2
1
R31
100Ω
1%
CLK0
CLK0
2
1
R32
100Ω
1%
CLK0
CLK0
2
1
C4
0.01µF
VBB
VBB
2
1
R33
100Ω
1%
R3
100Ω
1%
R27
49.9Ω
1%
Q1
2
1
Q2
2
1
Q2
2
1
R26
49.9Ω
1% R25
49.9Ω
1% R24
49.9Ω
1%
R4
100Ω
1%
R5
100Ω
1%
R6
100Ω
1%
R34
100Ω
1%
R7
100Ω
1%
CLK1
CLK1
2
1
CLK1
CLK1
2
1
R17
49.9Ω
1%
Q6
2
1
Q7
2
1
R16
49.9Ω
1%
R15
49.9Ω
1%
Q6
2
1
Q7
2
1
R14
49.9Ω
1%
Q8
2
1
R13
49.9Ω
1%
Q8
2
1
R12
49.9Ω
1%
Q9
2
1
R11
49.9Ω
1%
Q9
2
1
R10
49.9Ω
1%
R9
100Ω
1%
C11
0.1µF
VCC
VCC
C10
0.01µF
C15
0.01µF
VCC
VCC
C14
0.1µF
C12
0.1µF
VCC
C13
0.01µF
C3
0.01µF
VCC
VCC0 Q0 Q0 Q1 Q1 Q2 Q2
Q3
Q3
Q4
Q4
Q5
Q5
Q6
Q6
Q7Q7Q8Q8Q9Q9VCC0
VCC0
VCC0
VCC
C2
0.1µF
C8
0.01µF
C9
0.1µF
R8
100Ω
1%
VEE
VEE
VEE
GND
GND
C6
0.1µF
C5
0.01µF
C7
10µF
10V
R2
100Ω
1%
R1
100Ω
1%
VCC
VCC
GND
GND
C1
10µF
10V
Q0
32 31 30 29 28 27 26 25
24
23
22
21
20
19
18
17
161514131211109
8
7
6
5
4
3
2
1
2
1
R28
49.9Ω
1%
Q0
2
1
R29
49.9Ω
1%
U1
Figure 1. MAX9311 EV Kit Schematic
Evaluates: MAX9311–MAX9314
MAX9311 Evaluation Kit
4 _______________________________________________________________________________________
Figure 2. MAX9311 EV Kit Component Placement Guide—
Component Side
Figure 3. MAX9311 EV Kit PC Board Layout—Component Side
Figure 4. MAX9311 EV Kit PC Board Layout—Inner Layer 2 (GND)
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5
© 2001 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Evaluates: MAX9311–MAX9314
MAX9311 Evaluation Kit
Figure 5. MAX9311 EV Kit PC Board Layout—Inner Layer 3
(VCC)
Figure 6. MAX9311 EV Kit PC Board Layout—Solder Side
(VEE/GND)
