NB3M8T3910GEVB ON Semiconductor

NB3M8T3910GEVB NB3M8T3910G Evaluation Board User s Manual Introduction The NB3M8T3910GEVB is a custom evaluation board developed by ON Semiconductor for the NB3M8T3910G. NB3M8T3910GEVB Table 1. OUTPUT DEDICATION OF THE NB3M8T3910GEVB Output Type (Dedicated) Output Pin Name SMODEA 1:0 SMODEB 1:0 Output Measurement Method QA0/QA0b LVPECL 0 0 x x Use 50- Scope Head there is no load on the board QA1/QA1b LVPECL 0 0 x x Use 50- Scope Head there is no load on the board QA2/QA2b LVDS 0 1 x x Measure with Single or Differential Hi-Z Probes Outputs have 100- termination resistor across at SMA connectors QA3/QA3b HCSL 1 0 x x Use 50- Scope Head there is no 50- to GND on the board or install 50- SMA terminators and use a Hi-Z probe QA4/QA4b HCSL 1 0 x x Use 50- Scope Head there is no 50- to GND on the board or install 50- SMA terminators and use a Hi-Z probe QB0/QB0b LVPECL x x 0 0 Measure with Single or Differential Hi-Z Probes these LVPECL outputs have a Thevenin termination resistor network. QB1/QB1b LVDS x x 0 1 Measure with Single or Differential Hi-Z Probes Outputs have 100- termination resistor across at SMA connectors QB2/QB2b LVDS x x 0 1 Measure with Single or Differential Hi-Z Probes Outputs have 100- termination resistor across at SMA connectors QB3/QB3b HCSL x x 1 0 Measure with Single or Differential Hi-Z Probes there is 50- to GND on the board QB4/QB4b HCSL x x 1 0 Use 50- Scope Head there is no 50- to GND on the board or install 50- SMA terminators and use a Hi-Z probe NOTE: x = dont care LVDS OUTPUT CONFIGURATION Two 0- Resistors 100- Resistor Figure 2. LVDS Output Configuration LVDS outputs are typically terminated with 100- across LVDS outputs. Two 0- resistors connect the metal traces the Q & Qb output pair. and a 100- resistor connects between the traces. On QA2/QA2b, QB1/QB1b, QB2/QB2b, there are Use a single-ended or differential high-impedance probe on-board 100-ohm output termination resistors across the across the 100- resistor.