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Download Evaluates: MAX3983 MAX3983 SMA Connector Evaluation Kit _______________ General Description
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19-3340; Rev 0, 7/04 MAX3983 SMA Connector Evaluation Kit _______________ General Description ____________________ Component List DESIGNATION QTY C1-C32, C35C44 C33 C34, C45, C46, C49 42 1 4 DESCRIPTION 0.01µF ±5% ceramic capacitors (0402) 33µF tantalum capacitor 0.1µF ±5% ceramic capacitors (0402) C47, C48, C50, C51 4 Not Installed J1-J34 34 SMA connectors, edge mount ♦ Fully Assembled and Tested ♦ Easy Selection of Operating Modes ♦ Equipped with SMA Connectors on all Data Inputs and Outputs ______________ Ordering Information PART TEMP. RANGE MAX3983SMAEVKIT 0°C to +85°C IC PACKAGE 68 QFN ______________Component Suppliers SUPPLIER AVX PHONE 843-448-9411 FAX 843-448-1943 Coilcraft 847-639-6400 847-639-1469 Digi-Key 218-681-6674 218-681-3380 Murata 770-436-1300 770-436-3030 JP1, JP2, JP8 - JP10 JP12 JP3 6 2-pin headers, 0.1in centers 1 3-pin header, 0.1in centers JP5 1 3-pin + 1-pin header, 0.1in centers JP11 1 Not Installed 1) L1 1 4.7µH Inductor Coilcraft DS1608C-472 Connect a +3.3V supply to the 3.3V terminal and ground to the GND terminal. 2) Install shunt at jumper JP10. R1-R8 8 4.7kΩ ±5% resistors (0402) 3) R10 - R18 9 Not Installed Disable system loopback by LOOPBACK shunt at jumper JP9. TP1-TP11 11 Test points Digi-Key 5000K-ND 4) Remove shunts at jumpers JP3 and JP5 to enable TX and RX. U1 1 MAX3983UGK 68-QFN* 5) U2 1 Install shunt at jumper JP2 to VCC to provide +3.3V to the SD pullup resistors. 6) Apply 2.5Gbps to 3.2Gbps data to TX_IN[1:4] (J9 - J16). 7) Apply 2.5Gbps to 3.2Gbps data to RX_IN[1:4] (J19 – J26). 8) Connect data outputs RX_OUT[1:4] (J1 – J8) to a 50 ohm-terminated oscilloscope to monitor RX_IN[1:4] data, and/or connect TX_OUT[1:4] (J27 – J34) to a 50 ohm-terminated oscilloscope to monitor TX_IN[1:4] data. 9) Adjust TX pre-emphasis with jumpers JP1 and JP12, and adjust RX pre-emphasis with JP8 (see Jumper Descriptions). None None OR Gate Fairchild NC7S32P5X SC70 MAX3983 SMA connector evaluation circuit board, rev B MAX3983 data sheet *Note: U1 has an exposed pad which requires it to be solder attached to the circuit board to ensure proper functionality of the part. Note: Please indicate that you are using the MAX3983 when ordering from these suppliers. ________________________ Quick Start installing _________________________________________________________________Maxim Integrated Products 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. www.BDTIC.com/maxim the 1 Evaluates: MAX3983 The MAX3983 SMA Connector evaluation kit (EV Kit) is an assembled demonstration board that provides electrical evaluation of the MAX3983 Quad Copper Cable Signal Conditioner. All data inputs and outputs are accessible through SMA connectors. The EV Kit also includes a calibration strip for accurate measurements. _________________________Features MAX3983 SMA Connector Evaluation Kit Evaluates: MAX3983 __________________________________________________________________ _Jumper NAME TYPE TX_PE1 (JP1) 2-pin header TX_PE0 (JP12) 2-pin header RX_PE (JP8) 2-pin header LOOPBACK (JP9) 2-pin header VCCTX (JP10) 2-pin header PULLUP (JP2) 2-pin header SHUNT POSITION OPEN Enables most-significant bit of TX pre-emphasis control SHUNT (GND) Disables most-significant bit of TX pre-emphasis control OPEN Enables least-significant bit of TX pre-emphasis control Disables least-significant bit of TX pre-emphasis control OPEN Sets RX pre-emphasis to 6dB SHUNT (GND) Sets RX pre-emphasis to 3dB OPEN SHUNT (GND) SHUNT OPEN OPEN 3-pin header TX_AUTO_EN TX_DISABLE OPEN RX_AUTO_EN RX_ENABLE (JP5) 3-pin + 1-pin header DESCRIPTION SHUNT (GND) SHUNT (VCC) TX_ENABLE (JP3) Descriptions RX_DISABLE Enables loopback from TX_IN[1:4] to RX_OUT[1:4] Disables loopback Jumper JP10 must be shunted for proper operation of the MAX3983 Allows external voltage (3.0V to 5.5V) applied at VPULLUP pin as SD resistor pullup voltage Sets Vcc as the SD resistor pullup voltage Enables the TX section of the MAX3983 Enables auto-detection in the TX section, when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. Disables the TX section of the MAX3983 Enables the RX section of the MAX3983 Enables auto-detection in the RX section when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. Disables the RX section of the MAX3983 Sets RX_ENABLE high whenever LOOPBACK or all of RX_SD[1:4] are high when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. _______________Detailed Description Auto-Detect Configuration The MAX3983 SMA Connector Evaluation Kit is shipped with each signal detect (SD) separated. In order for the MAX3983 to automatically detect an incoming signal and enable the corresponding output, these SD outputs need to be connected together. To configure the board for auto-detection on the RX side, solder four 0Ω 0402 resistors in R14 - R17 and remove R6, R7, and R8. Jumper JP5 then enables RX auto-detect (see Jumper Descriptions). To configure the board for auto-detection on the TX side, solder four 0Ω 0402 resistors in R10 - R13 and remove R2, R3, and R4. Jumper JP3 then enables TX auto-detect (see Jumper Descriptions). Output Transition Times If slower transition times are desired, the MAX3983 SMA Connector Evaluation Kit provides a connection for 0402 capacitors across the TX outputs. To achieve about 100ps (20%-80%) edges, solder 1.5pF capacitors for C47, C48, C50, and C51. 2 _________________________________________________________________________________________ www.BDTIC.com/maxim www.BDTIC.com/maxim 3.3V GND C49 0.1µF L1 J18 J17 C33 33µF 4.7µH TX_IN4+ TX_IN4- TX_IN3+ TX_IN3- TX_IN2+ TX_IN2- TX_IN1+ TX_IN1- VCC C45 0.1µF J16 J15 J14 J13 J12 J11 J10 J9 JP11 JP10 0.01µF C36 0.01µF C35 C27 0.01µF C25 0.01µF 0.01µF C44 0.01µF C43 0.01µF C42 C41 0.01µF 0.01µF C40 C39 0.01µF 0.01µF C38 0.01µF C37 C29 0.01µF C26 0.01µF C30 0.01µF C28 0.01µF C31 0.01µF C32 0.01µF V CCRX VCCTX TP11 GND TP9 VCCRX TP10 VCCTX 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 E P* TX_SD4 TX_SD3 V CC1 TX_IN4+ TX_IN4- GND TX_IN3+ TX_IN3- GND TX_IN2+ TX_IN2- GND TX_IN1+ TX_IN1- V CC1 TX_SD2 R18 OPE N 0.01µF 0.01µF 66 V CCRX C18 C17 65 LOOP BACK TX_SD1 TX_ENAB LE VCCTX VCCTX JP9 J2 VCCTX 0.01µF C19 J3 VCCRX 63 VCCTX VCCRX 0.01µF C20 J4 U1 MAX3983 0.01µF C21 J5 RX_OUT3- 59 J1 62 RX_OUT2+ VCCTX C51 C50 C48 C47 0.01µF C24 J8 RX_OUT4+ VCCRX RX _E NABLE 0.01µF C23 J7 RX_OUT4- NOT INSTA LLED NOT INSTA LLED NOT INSTA LLED NOT INSTA LLED VCCTX CPOR TX_PE0 JP12 JP1 35 36 37 38 39 40 C15 0.01µF C16 0.01µF C13 0.01µF C14 0.01µF C11 0.01µF C12 0.01µF C9 0.01µF C10 0.01µF C7 0.01µF C8 0.01µF C5 0.01µF C6 0.01µF 41 43 44 42 C1 0.01µF C2 0.01µF C3 0.01µF C4 0.01µF VCCRX VCCRX C34 0.1µF 45 46 47 48 49 50 51 TX_PE1 RX_SD4 RX_SD3 VCC3 RX_IN4- RX_IN4+ GND RX_IN3- RX_IN3+ GND RX_IN2- RX_IN2+ GND RX_IN1- RX_IN1+ VCC3 RX_SD2 RX_SD1 *EP = EXPOSED PAD, SOLDERED TO GROUND V CCTX V CCRX 0.01µF C22 J6 RX_OUT3+ 56 LOOPBACK JP8 18 54 RX_PE 68 LOOPBACK TX_ENABLE 67 19 RX_PE N.C. 20 VCC4 VCC2 64 RX_OUT1TX_OUT1+ 21 RX_OUT1+ TX_OUT122 VCC4 VCC2 23 RX_OUT2- 61 25 TX_OUT2- 53 RX _OUT2- 26 TX_OUT2+ 24 RX_OUT2+ 60 VCC4 VCC2 58 RX_OUT3TX_OUT3+ 27 RX_OUT3+ 57 29 TX_OUT328 VCC4 VCC2 52 RX_ENABLE 55 RX_OUT4TX_OUT4+ 30 RX_OUT4+ TX_OUT431 VCC4 VCC2 32 POR TX_PE0 33 TX_PE1 34 RX_OUT1+ R16 OPE N R17 OPE N LOOPB ACK R7 4.7kΩ R8 4.7kΩ R15 OP EN R6 4.7kΩ 2 1 R12 OP EN R3 4.7kΩ JP5 RX_AUTO_EN 4 R13 OPEN R4 4.7kΩ U2 NC7S32P5X R14 OPE N R5 4.7kΩ J33 J31 J29 J27 J25 J23 J21 J19 J34 TX_OUT1- J32 TX_OUT2- J30 TX_OUT3- J28 TX_OUT4- J26 RX_IN4+ J24 RX_IN3+ J22 RX_IN2+ J20 RX_IN1+ RX _E NABLE RX_DISABLE JP3 C46 0.1µF TX_OUT1+ TX_OUT2+ TX_OUT3+ TX_OUT4+ RX_IN4- RX_IN3- RX_IN2- RX_IN1- TX _E NABLE TX_DISABLE TP4 TX_SD4 TP3 TX_SD3 TP2 TX_SD2 TP1 TX_SD1 TP8 RX_SD4 TP7 RX_SD3 TP6 RX_SD2 TP5 RX_SD1 TX_AUTO_EN R10 OPEN R1 4.7kΩ V PULLUP R11 OPEN R2 4.7kΩ JP2 VCC Evaluates: MAX3983 RX_OUT1- MAX3983 SMA Connector Evaluation Kit Figure 1. MAX3983 SMA Connector EV Kit Schematic _________________________________________________________________________________________ 3 Evaluates: MAX3983 MAX3983 SMA Connector Evaluation Kit Figure 2. MAX3983 SMA Connector EV Kit Component Placement Guide – Component Side 4 _________________________________________________________________________________________ www.BDTIC.com/maxim MAX3983 SMA Connector Evaluation Kit Evaluates: MAX3983 Figure 3. MAX3983 SMA Connector EV Kit PC Board Layout – Component Side _________________________________________________________________________________________ www.BDTIC.com/maxim 5 Evaluates: MAX3983 MAX3983 SMA Connector Evaluation Kit Figure 4. MAX3983 SMA Connector EV Kit PC Board Layout – Ground Plane 6 _________________________________________________________________________________________ www.BDTIC.com/maxim MAX3983 SMA Connector Evaluation Kit Evaluates: MAX3983 Figure 5. MAX3983 SMA Connector EV Kit PC Board Layout – Power Plane _________________________________________________________________________________________ www.BDTIC.com/maxim 7 Evaluates: MAX3983 MAX3983 SMA Connector Evaluation Kit Figure 6. MAX3983 SMA Connector EV Kit PC Board Layout – Solder (Bottom) Side 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. 8 _________________________________________________________________________________________ www.BDTIC.com/maxim
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