SNOU202 April   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Recommended Equipment Setup
    2. 2.2 Board Setup
      1. 2.2.1 Power Supplies
      2. 2.2.2 Inputs
      3. 2.2.3 Outputs
      4. 2.2.4 Hysteresis
    3. 2.3 Quick-Start Procedure using TLV1H103
  7. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks

2.3 Quick-Start Procedure using TLV1H103

Note: Do not turn on power supply until all connections to the device are made to the board.

The following connections are made using a split supply configuration. Split supply configuration is advantageous for measurement purposes. The reference voltage can be set to GND, while the other input can be set to an AC waveform that toggles between negative and positive voltage at a 0 DC offset. Thus, the output is toggling whenever the AC waveform toggles.

This configuration allows for two distinct advantages compared to a single supply input. The first advantage is that the reference voltage is at GND; a non-noisy voltage level. If the reference voltage level needs to be changed in relation to the supplies, then the supply voltages can be altered instead. The second advantage being able to zoom into the input as much as possible due to the 0 DC offset of the waveform.

  1. Set power supply positive terminal to 2.5V and negative terminal to -2.5V. Disable power supply output
  2. Connect positive terminal supply to TP1, negative terminal to TP2, and GND to TP3.
  3. Populate R7 with 0Ω resistor and connect LE/HYST to positive terminal through JP with jumper.
  4. Make sure that the cables connecting to IN+SENSE and OUT are matched length and impedance. Perform any deskewing if necessary
  5. Set the function generator to produce a square wave output with 100mVpp at 1MHz, with a DC offset of 0V. Disable the signal generator output. Connect the output to IN+.
  6. Connect IN- to GND through an SMA 50Ω termination barrel.
  7. Connect OUT to a 50Ω terminated scope channel.
  8. Connect IN+SENSE to a 50Ω terminated scope channel.
  9. Enable the power supply and the signal generator.
  10. Verify the supply current is < 60mA.
  11. Monitor and verify the input from IN+SENSE.
  12. Monitor and verify OUT.
GUID-20240328-SS0I-VH03-6LZ1-NGJBFDJ7QCQW-low.svgFigure 2-6 HS-COMPARATOR-EVM Quick Start Setup Using TLV1H103

Next, is a scope shot capture of the inputs and outputs described in the quick-start procedure. Here, the propagation delay between IN+ and OUT is measured by taking the time delta between when IN+ and OUT reach 50% of the respective transitions.

GUID-20210419-CA0I-NL7L-BQG4-TT87XXZFRG2B-low.svgFigure 2-7 Propagation Delay Low to High
GUID-20210419-CA0I-LZ5W-KJLT-RTZ55CMN893H-low.svg Figure 2-8 Propagation Delay High to Low