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19-1417; Rev 0; 12/98
MAX3693 Evaluation Kit
General Description
The MAX3693 evaluation kit (EV kit) is an assembled, surface-mount demonstration board that provides easy evaluation of the MAX3693 622Mbps serializer with clock synthesis and LVDS inputs. o Single +3.3V Supply o Selectable Clock-Reference Frequencies (155.52MHz, 77.76MHz, 51.84MHz, 38.88MHz) o Fully Assembled and Tested Surface-Mount Board
Features
Evaluates: MAX3693
Component List
DESIGNATION QTY C4-C9, C11, C12, C16-C21 C13, C22 C14 C15 L1-L5 R1, R2, R11, C1-C3, C10, JU1, JU2, JU4, JU11-JU15 R3, R4 R5, R6 R7, R8 R9, R10 R12 PCLKI+, PCLKI-, PD0+, PD0-, PD1+, PD1-, PD2+, PD2-, PD3+, PD3-, PCLK0+, PCLK0RCLK+, RCLK-, SD+, SDGND, +3.3V JU3 U1 14 2 1 1 1 DESCRIPTION 0.1F, 10%, 25V min ceramic capacitors 1F, 10%, 10V min ceramic capacitors X7R type 1F, 10%, 25V min ceramic capacitor 33F, 10%, 10V min tantalum capacitor AVX TAJD336K010 56nH inductors Coilcraft 0805CS-560XKBC Not installed 27, 5% resistors 220, 5% resistors 130, 5% resistors 24, 5% resistors 20k, 5% resistor
Ordering Information
PART MAX3693EVKIT TEMP. RANGE -40C to +85C IC PACKAGE 32 TQFP
Detailed Description
The MAX3693 EV kit simplifies evaluation of the MAX3693. The EV kit operates from a single +3.3V supply and includes all the external components necessary to interface with LVDS inputs and 3.3V PECL outputs. The LVDS inputs (PD_+, PD_-, PCLKI+, PCLKI-, RCLK+, RCLK-) are internally terminated with 100 differential input resistance, and therefore do not require external termination. Ensure that LVDS devices driving these inputs are not redundantly terminated. The LVDS outputs (PCLKO+, PCLKO-) require a differential termination with a 100 resistor between complementary outputs. The evaluation kit is designed to directly couple an LVDS reference clock. If the reference clock does not have LVDS-compatible levels: 1) Cut the PC board traces shorting capacitors C1 and C2. 2) Install 0.1F capacitors. 3) Install 4.99k resistors for R1 and R2 and tie the centerpoint of R1 and R2 (available at JU1) to VCC / 2. Install a 0.1F capacitor at C3 for addtional noise filtering. The PECL outputs have an attenuation (0.6) and impedance matching network on the EV board that allow 50 terminations to ground for oscilloscope interfacing. All signal inputs and outputs use coupled 50 transmission lines. All input signal lines are of equal length to minimize propagation-delay skew. Likewise, all output signal lines are of equal length. The MAX3693 EV kit allows use of multiple reference clock frequencies with the appropriate setting on JU3. See Table 1 for jumper settings.
1
0 2 2 2 2 1
12
SMB connectors (PC-mount)
4 2 1 1 1 1 1
SMA connectors (PC-mount) Test points 2x3 pin header MAX3693ECJ (32 TQFP) MAX3693 PC board MAX3693 data sheet Shunt for JU3
Component Suppliers
SUPPLIER AVX Coilcraft PHONE 803-946-0690 847-639-6400 FAX 803-626-3123 847-639-1469
________________________________________________________________ Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
MAX3693 Evaluation Kit Evaluates: MAX3693
1 C12 0.1F C13 1F VCCPLL JU4 C1 SHORT (PC TRACE) VCCPLL C22 1F 24 GND R1 OPEN JU1 C3 OPEN J2 RCLKC2 SHORT (PC TRACE) J3 PCLKI+ C5 0.1F VCCPLL VCCDIG 28 29 30 31 32 PCLKIJ5 PDO+ J6 PDOJU11 L1 56nH C16 0.1F VCCPLL 56nH J7 C17 0.1F PD1+ VCCDIG 56nH J8 C18 0.1F PD1VCCECL 56nH C19 0.1F VCCLVDS 56nH C20 0.1F VCCVCO R2 OPEN 25 26 C4 0.1F 27 GND RCLK+ RCLKVCC 23 FIL+ 22 FIL21 VCC 20 CKSET 19 GND VCCVCO 3 5
JU3
2 4 6
+3.3V
JU2
+3.3V
C11 0.1F
R12 20k
R11 OPEN
J1
C10 OPEN 18 GND 17 GND C7 0.1F VCC SD+ SDVCC 16 15 14 13 12 11 10 9 C6 0.1F VCCECL VCCLVDS +3.3V J15 PCLKO+ C21 0.1F
R9 24
R3 27
J13 SD+
RCLK+
+3.3V
R7 130
R6 220
C8 0.1F R10 24 R4 27 J14 SDR8 130 R5 220
MAX3693
VCC PCLKI+ PCLKIGND PD0+ PD1+ PD2+ PD3+ PD0PD1PD2PD3VCC PCLKO+ PCLKOGND
C9 0.1F
J4
J16 PCLKOJ11 PD3-
1
2
3
4
5
6
7
8
J12 PD3+
JU12 L2
J9 PD2-
J17 +3.3V C15 33F J18 GND C14 1F
JU13 L3
J10 PD2+
JU14 L4
JU15 L5
Figure 1. MAX3693 EV Kit Schematic
2 _______________________________________________________________________________________
MAX3693 Evaluation Kit Evaluates: MAX3693
Table 1. Jumper JU3 Functions
SHUNT LOCATION 1-2 3-4 5-6 Open REFERENCE CLOCK FREQUENCY (MHz) 155.52 51.84 38.88 77.76 CKSET PIN
JU3 JU3 PIN LOCATIONS (SEE FIGURE 2) 1 3 5 2 4 6
Connected to VCC Connected through 20k resistor to GND Connected to GND Floating
U1 MAX3693
1.0"
1.0"
Figure 2. MAX3693 EV Kit Component Placement Guide-- Component Side
Figure 3. MAX3693 EV Kit PC Board Layout--Component Side
_______________________________________________________________________________________
3
MAX3693 Evaluation Kit Evaluates: MAX3693
1.0"
1.0"
Figure 4. MAX3693 EV Kit PC Board Layout--Solder Side
Figure 5. MAX3693 EV Kit PC Board Layout--Power Plane
1.0"
Figure 6. MAX3693 EV Kit PC Board Layout--GND Plane
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.
4 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 1998 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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