JU1 JU6, JU15 JU20. Maxim Integrated Products 1

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1 9-9; Rev 0; /0 MAX9 Evaluation Kit General Description The MAX9 evaluation kit (EV kit) contains a flowthrough low-voltage differential signaling (LVDS) quad differential line driver (MAX9) and receiver (MAX9). The differential line driver accepts LVTTL or LOS inputs and translates them to LVDS output signals. The receiver accepts LVDS inputs and translates them to single-ended LOS outputs. Both circuits operate with high data rates and low power dissipation. The MAX9 EV kit is designed with 5 controlledimpedance traces in a four-layer PC board. It is specially designed for direct differential probing of the LVDS I/O. Connection points are provided for the attachment of a cable to carry the LVDS signals. The EV kit operates from a single.v supply. In addition, a.v power-supply input is provided for testing the driver s high-impedance propagation delays. A separate supply option for the driver and receiver allows testing of the common-mode performance of the receiver. The MAX9 EV kit can also be used to evaluate the MAX9, which is the same as the MAX9 but with integrated 07Ω (nominal) termination resistors. Additional pads on the board are provided for dynamically driving the enable and disable control signals with a pulse generator. DESIGNATION QTY DESCRIPTION C, C, C9 C, C C, C5 C8, C0 6 C C R, R6, R, R 0 0µF ±0%, 0V tantalum capacitors (Case B) AVX TAJB06K00R or Kemet T9B06K00AS 000pF ±0%, 50V X7R ceramic chip capacitors (00) Murata GRM6X7R0K050A 0.µF ±0%, 6V X7R ceramic chip capacitors (060) Murata GRM9X7R0K06A 0pF ±0.pF, 50V ceramic chip capacitors (00) Murata GRM6COG00B050A Not installed, open resistor pads (00) R R5, R7 R 0 ±% resistors (00) R5 R8 0 ±% resistors (00) R9 R.0kΩ ±% resistors (060) R R0 8 resistors (060) Features Independent Driver (MAX9) and Quad Receiver (MAX9/MAX9) Circuits >500Mbps (50MHz) Switching Rate (MAX9/MAX9) >800Mbps (00MHz) Switching Rate (MAX9) Supports Testing of Twisted-Pair Cables 5 Controlled-Impedance Traces 6-Pin TSSOP Package Fully Assembled and Tested Ordering Information PART TEMP RANGE IC PACKAGE MAX9EVKIT 0 C to +70 C 6 TSSOP Note: To evaluate the MAX9, request a MAX9EUE free sample with the MAX9EVKIT. Component Suppliers SUPPLIER PHONE FAX AVX Kemet Murata Note: Please indicate that you are using the MAX9/MAX9/ MAX9 when contacting these component suppliers. Component List DESIGNATION QTY DESCRIPTION R R8 0 R9, R50 0 JU JU6, JU5 JU0 Not installed, open resistor pads (060) Not installed, shorted resistor pads (060) -pin headers JU7 JU 8 -pin headers JU JU8 8 -pin headers DEN, DEN, REN, REN DIN DIN, RIN- to RIN-, RIN+ to RIN+ 0 Not installed, edge-mount connectors edge-mount connectors U MAX9EUE (6-pin TSSOP) U MAX9EUE (6-pin TSSOP) None 8 Shunts (JU, JU6, JU5 JU0) None MAX9 PC board None MAX9 EV kit data sheet None MAX9/MAX9 data sheet Evaluates: MAX9/MAX9/MAX9 Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at , or visit Maxim s website at

2 MAX9 Evaluation Kit Evaluates: MAX9/MAX9/MAX9 Quick Start The MAX9 EV kit is a fully assembled and tested surface-mount board. The EV kit contains an LVDS differential line driver located on the upper-half circuit, and receiver located on the lower-half circuit. Recommended Equipment DC power supplies: One.V ±0.V, 00mA or Two.V ±0.V, 00mA supplies for operating the driver and receiver with independent supplies (with R9 and R50 shorts cut open) Signal generator for LVDS signal input (e.g., HP 8A) Differential probe (e.g., Tektronix P68) Digital sampling oscilloscope or logic analyzer (e.g., Tektronix 80C) Table. Input Signals to Driver Circuit Using JU to JU5 JUMPER JU JU JU JU5 SHUNT LOCATION DRIVER INPUT SIGNAL and connected to VCC IN = high and connected to IN = low and connected to VCC IN = high and connected to IN = low and connected to VCC IN = high and connected to IN = low and connected to VCC IN = high and connected to IN = low Table. Driver Probing Connections CHANNEL NAME Channel Channel Channel Channel IC OUTPUT PIN NAME TESTING POINT Evaluating the Driver (MAX9) Circuit Follow the steps below to verify driver circuit operation. Do not turn on the power supply until all connections are completed: ) Verify that a shunt is across jumper JU (EN) pins and. ) Connect a differential probe across pins and of jumper JU7. ) Connect a.v, 00mA power supply to the VCC pad. Connect the supply ground to the pad closest to VCC. ) Connect a function generator that provides a square wave to the input of the driver circuit connector DIN with the following setting: a) Frequency = 0MHz b) V IL = 0.00V, V IH =.00V c) Duty cycle = 50% 5) Turn on the power supply, enable the function generator, and verify the differential output signal V OD = (OUT+ - OUT-). Note: For connections to verify every channel, see Table. Evaluating the Receiver (MAX9) Circuit Follow the steps below to verify receiver circuit operation. Do not turn on the power supply until all connections are completed: ) Verify that the shunt is across jumper JU5 (EN) pins and. ) Connect a scope probe across JU5 (OUT) to observe the output signal. ) Connect a.v, 00mA power supply to the VCC pad. Connect the supply ground to the pad closest to VCC. PROBING HEADER ( PIN), PIN NO. OUT- DOUT- JU7, pins (+) and (-) OUT+ DOUT+ JU7, pins (+) and (-) OUT+ DOUT+ JU8, pins (+) and (-) OUT- DOUT- JU8, pins (+) and (-) OUT- DOUT- JU9, pins (+) and (-) OUT+ DOUT+ JU9, pins (+) and (-) OUT+ DOUT+ JU0, pins (+) and (-) OUT- DOUT- JU0, pins (+) and (-) PROBING (OUT+ - OUT-) JU7, pins (+) and (-) JU8, pins (+) and (-) JU9, pins (+) and (-) JU0, pins (+) and (-)

3 MAX9 Evaluation Kit Table. Receiver Probing Connections CHANNEL NAME Channel Channel Channel Channel IC OUTPUT PIN NAME TESTING POINT ) Connect a function generator that provides square waves to the input of the receiver circuit (connect the noninverting signal to connector RIN+ and the inverting signal to connector RIN-) with the following setting: a) Frequency = 0MHz b V IL =.0V, V IH =.0V c) Duty cycle = 50% 5) Turn on the power supply and enable the function generator, then verify the output signal (OUT) on the scope. Note: For connections to verify every channel, see Table. Detailed Description The MAX9 EV kit is a fully assembled and tested circuit board that includes a quad LVDS differential line driver and receiver. The EV kit has two independent circuits. The upper-half circuit is a driver circuit and the lower-half circuit is a receiver circuit. The two circuits can be operated together or separately. Both circuits I/Os are specially designed for direct probing. The EV kit is a four-layer PC board with 5 controlledimpedance traces for all input signal traces with termination resistors. The two circuits can be linked by connecting an output signal from the driver circuit to the input of the receiver circuit. Each differential input pair traces are laid out with less than 00mil length difference. Using Separate Power Supplies The MAX9 EV kit contains two separate circuits that can be operated with independent supplies after cutting open the shorts at R9 and R50. Independent power and ground planes allow measurements of the receivers response to ground shift or other commonmode effects. Each circuit requires a.v, 00mA PROBING HEADER ( PIN), PIN NO. IN- IN- JU, pins (+) and (-) IN+ IN+ JU, pins (+) and (-) IN+ IN+ JU, pins (+) and (-) IN- IN- JU, pins (+) and (-) IN- IN- JU, pins (+) and (-) IN+ IN+ JU, pins (+) and (-) IN+ IN+ JU, pins (+) and (-) IN- IN- JU, pins (+) and (-) OUTPUT SIGNAL OUT OUT OUT OUT PROBING HEADER ( PIN) JU5 JU6 JU7 JU8 power supply. In addition, if high-impedance delay testing is to be performed, a.v voltage supply is required. Input Signals The MAX9 EV kit provides internal DC or external AC input signals to the driver circuit and two kinds of input media, coax or twisted-pair cable, to the receiver circuit. Driver Circuit Input The MAX9 EV kit accepts both internal (DC) and external (AC) inputs to the driver circuit. Before driving AC external input signals to DIN DIN to the driver circuit, verify there are no shunts across JU JU5 (Table ). JU JU5 can create DC internal input signals to the driver. To use JU JU5 to create DC input signals, make sure termination resistors R R5 are removed. Receiver Circuit Inputs The MAX9 EV kit also provides two kinds of input media to the receiver circuit: connector and twisted-pair cable. Additional paired testing points (IN+, IN-) (IN+, IN) (IN+, IN-) (IN+, IN-) are provided for the twisted-pair cable connections. When twistedpair cables are used as the input media (twisted-pair cables are soldered on testing points IN-, IN+ ), remove all resistors R R0 to avoid signal reflection from the traces that connect resistors to connectors. Output Signals The MAX9 EV kit is designed for direct probing of all output signals. Additional paired testing points (DOUT-, DOUT+), (DOUT+, DOUT-), (DOUT+, DOUT-), (DOUT+, DOUT-) are also provided for connection of twisted-pair cables and probing of the driver outputs. Evaluates: MAX9/MAX9/MAX9

4 MAX9 Evaluation Kit Evaluates: MAX9/MAX9/MAX9 Probing Connections The MAX9 EV kit is designed for direct differential probing connections. Table lists the direct probing connections on the respective pins for all input and output signals and their respective testing points. Table lists the receiver probing connections. Enable/Disable The MAX9 EV kit has two enables and two disables. All enables and disables can be controlled by either jumpers or external signals. Jumpers JU, JU6, JU5, and JU0 provide a DC logic signal to drivers EN, EN, and receivers EN and EN, respectively (Table ). The EV kit can also be controlled by external enable/disable signal(s). To use external signals to control enable and disable, connectors need to be added on DEN, REN, DEN, and REN pads with termination resistors R, R6, R, and R. Before connecting external signals to DEN, REN, DEN, and REN, verify there are no shunts across jumpers JU, JU6, JU5, and JU0. Evaluating Driver and Receiver Together To evaluate LVDS differential line driver (MAX9) and receiver (MAX9) together, remove resistors R R0 at the input of the receiver circuit, and remove capacitors C6 C and termination resistors R7 R at the output of the driver. Use 0 twistedpair cable (such as CAT-5) to connect the driver outputs to the receiver inputs. Connect one end of the twisted-pair cable to test point DOUT- and another end to IN- together, etc. Connect function generator(s) to driver input(s), and probe at receiver or driver I/Os. Table. JU, JU6, JU5, and JU0 Setting and Enable/Disable Logic Level JUMPER SHUNT LOCATION ENABLE/DISABLE LOGIC LEVEL JU, JU6, and, connected to V CC High JU5, and, connected to Low JU0 Open, no shunt Float Follow these steps to verify board operation. Do not turn on the power supply until all connections are completed: ) Verify that shunts are across JU and JU5 pins and. ) Connect function generator to the driver input DIN with the following setting: a) Frequency = 0MHz b) V IL = 0.00V, V IH =.00V c) Duty cycle = 50% ) Connect a scope probe across jumper JU5 (OUT). Use 0 twisted-pair cable to connect the driver outputs to the receiver inputs as shown in Figure. ) Single power supply (for the normal operation): Connect a.v, 00mA power supply to VCC. Connect the supply ground to the pad closest to VCC. Optional separate power supplies (for testing receiver common-mode response): Connect.V, 00mA power supplies to VCC and VCC. Connect the supply grounds to the pads closest VCC and VCC, respectively. Be sure R9 and R50 shorts are cut open. 5) Turn on the power supply(ies), enable the function generator, and verify the output. Note: For connections to verify every channel, see Tables and. Evaluating the MAX9 The MAX9 EV kit can also evaluate the MAX9, a differential line receiver with 07Ω internal termination resistors. To evaluate the MAX9, replace MAX9EUE with a MAX9EUE and remove the external 0 resistors R5 R8. Table 5. Enable and Disable Truth Table DEN (REN) DEN (REN) OPERATION FUNCTION High Low U (U) enable High Float U (U) enable All other combinations U (U) disable

5 MAX9 Evaluation Kit MAX9 IN+ 0 OUT IN- IN+ 0 OUT IN- IN+ 0 OUT IN- IN+ 0 OUT IN- RECEIVER CIRCUIT (LOWER-HALF CIRCUIT) MAX9 DOUT+ DIN DOUT- DOUT+ DIN DOUT- DOUT+ DIN DOUT- DOUT+ DIN DOUT- DRIVER CIRCUIT (UPPER-HALF CIRCUIT) Figure. Twisted-Pair Cable Interconnect Diagram Evaluates: MAX9/MAX9/MAX9 5

6 Evaluates: MAX9/MAX9/MAX9 MAX9 Evaluation Kit 6 R7 % R8 % R5 JU C5 0.µF JU7 DOUT- DOUT+ C7 0pF C6 0pF 6 5 R9 % R0 % R6 JU C6 0.µF JU8 DOUT+ DOUT- C9 0pF C8 0pF R % R % R7 JU C7 0.µF JU9 DOUT- DOUT+ C 0pF C0 0pF R % R % R8 JU C8 0.µF JU0 DOUT+ DOUT- C 0pF C 0pF 0 9 MAX9 U JU R DEN JU R % DIN JU R % DIN JU R % DIN 6 JU5 R5 % DIN 7 JU6 R6 DEN 8 C 0µF 0V C 000pF C 0.µF VCC 5 VCC VCC VCC VCC VCC VCC EN IN IN IN IN EN V CC OUT- OUT+ OUT+ OUT- OUT- OUT+ OUT+ OUT- C 0µF 0V R50 SHORT R9 SHORT VCC VCC Figure. MAX9 EV Kit Schematic (Driver Circuit)

7 Evaluates: MAX9/MAX9/MAX9 MAX9 Evaluation Kit 7 MAX9 U IN- IN+ R5 % RIN- R6 % RIN+ JU R R R5 0 % IN+ IN- R7 % RIN+ R8 % RIN- JU R5 R6 R6 0 % IN- IN+ R9 % RIN- R0 % RIN+ JU R7 R8 R7 0 % 6 5 IN+ IN- R % RIN+ R % RIN- JU R9 R0 R8 0 % 8 7 C9 0µF 0V C0 0.µF C 000pF VCC JU5 R REN 6 VCC JU0 R REN 9 VCC JU6 VCC JU5 R9 kω % R 5 C 0pF JU7 VCC JU6 R0 kω % R C 0pF JU8 VCC JU7 R kω % R C 0pF JU9 VCC JU8 R kω % R 0 C5 0pF IN+ IN- IN- IN+ IN+ IN- IN- IN+ V CC EN EN OUT OUT OUT OUT Figure. MAX9 EV Kit Schematic (Receiver Circuit)

8 MAX9 Evaluation Kit Evaluates: MAX9/MAX9/MAX9.0" Figure. MAX9 EV Kit Component Placement Guide Component Side.0" Figure 5. MAX9 EV Kit PC Board Layout Component Side.0" Figure 6. MAX9 EV Kit PC Board Layout Inner Layer 8

9 MAX9 Evaluation Kit.0" Figure 7. MAX9 EV Kit PC Board Layout Inner Layer.0" Figure 8. MAX9 EV Kit PC Board Layout Solder Side Evaluates: MAX9/MAX9/MAX9 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, 0 San Gabriel Drive, Sunnyvale, CA Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.