EBL4600CI-EVALZ

USERS MANUAL EBL4600CI-EVALZ AN1513 Rev 1.00 QLx4600-S30 Evaluation Board June 24, 2016 Introduction Key Features The QLx4600-S30 lane extender evaluation board is a versatile QLx4600-S30 series IC stand-alone card developed to evaluate the performance of Single 5V external power supply Intersil QLx4600-S30 series quad equalizer. On-board regulators provide all voltages required for MCU Items provided along with the board: and IC operation This application note On-board DC/DC converter that provides the 1.2V supply to the IC Power cable Optional on-board boost selection for each channel via two sets of headers References Adjustable detection threshold for quiescent modes QLx4600-S30 Datasheet 8 sets of SMA connectors for high speed signals input and output Ordering Information PART NUMBER DESCRIPTION EBL4600CI-EVALZ QLx4600-S30 evaluation board with power supply cable FIGURE 1. TOP OF BOARD FIGURE 2. BOTTOM OF BOARD AN1513 Rev 1.00 Page 1 of 9 June 24, 2016EBL4600CI-EVALZ PROVIDING POWER FROM EXTERNAL 5V POWER Operation of Evaluation Board SUPPLY After a brief description of the board design and layout, the The evaluation board can also be powered by an independent different features and options to operate the board are external 5.0V power supply via header P1 as highlighted on highlighted. Figure 4. The maximum current consumption for the board Providing power to the board through an external supply including the voltage regulators, microcontroller circuits and the IC together is approximately 245mA with all channels active. The eight high speed differential I/O The impedance select function The variable detection threshold Controlling the equalizer boost via control pins QLx4600-S30 Evaluation Board The QLx4600-S30 evaluation board is a 4-layer, 4(w)x5.6(h)x0.059(t) in dimension, and fabricated with (Allied-Signal) FR-408 dielectric material. 100 differential signal traces are laid out with 0.0062 width and 0.0058 spacing. 50 single-ended traces are 0.009 wide. Figure 3 shows the top view of the board. FIGURE 4. QLX4600-S30 EVALUATION BOARD EXTERNAL POWER SUPPLY POWER CONNECTOR Table 1 provides description of the connector P1. A power cable is provided with the evaluation board. TABLE 1. P1 CONNECTOR DESCRIPTION 8 NC 7 NC 6 5.0V 5 5.0V 4 NC 3 NC 2 GND 1 GND High Speed Data I/O Interface Connectors There are sixteen SMA connectors on the board, eight for the CML differential inputs and eight for the CML differential outputs. All the connections from the SMA connectors to the QLx4600-S30 series chip are AC-coupled with a 220nF broadband capacitor. Figure 5 on page 3 shows each channel by their name, direction and their polarities. Detection Threshold (DT) The DT is another very important feature of the QLx4600-S30 series IC. On the evaluation board, the DT can be changed by adjusting the potentiometer VR1 (Figure 6 on page 3). In normal operation, the potentiometer should be set so that the voltage across the adjacent 10k resistor is 0V. For applications that need to adjust this level, it can be simply done by changing the potentiometer and reading the voltage across the 10k resistor in order to infer the current coming from the DT pin. FIGURE 3. QLX4600-S30 EVALUATION BOARD PCB OUTLINE For example, measuring a voltage of -200mV across the 10k resistor indicates a 20A current from the DT pin. Power Supply Power can be supplied to the board by using an external power supply. On-board voltage regulators supply the appropriate 1.2V to the QLx4600-S30 IC. AN1513 Rev 1.00 Page 2 of 9 June 24, 2016