SNOU198 October   2023 TLV3802

 

  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
  7. 3Hardware Design Files
    1. 3.1 Schematic
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1.     Trademarks

2.3 Quick-Start Procedure

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

The procedures listed below are the steps for a quick-start set-up using channel 1.

  1. Set one channel of the DC power supply to output a -2.5 V voltage and set the current limit to 100 mA. After making sure that this channel is disabled, connect VEE via TP2 to this supply.
  2. Set one channel of the DC power supply to output a +2.5 V voltage and set the current limit to 100 mA. After making sure that this channel is disabled, connect VCC via TP3 to this supply.
  3. Connect common ground of the DC power supply to SYS_GND via TP1.
  4. Ground the inverting input, IN1-, to ground to establish the threshold for the comparator at 0 V.
  5. Verify that cables connecting to IN1+_SENSE, OUT1+, and OUT1- are matched length and impedance. Perform any de-skewing if necessary. Set the function generator (50-Ω terminated) to produce a square wave output with 400mVpp at 10 MHz, with a 0 V DC offset. Disable the signal generator output. Connect the signal generator output to IN1+.
  6. Connect IN1+ SENSE, to a 50-Ω terminated scope channel.
  7. Connect OUT1+ and OUT1- to 50-Ω terminated channels on the oscilloscope.
  8. Enable the DC power supply.
  9. Verify the total supply current is < 60 mA.
  10. Enable the signal generator.
  11. Monitor and verify the input from IN1+_SENSE.
  12. Monitor and verify the outputs for OUT1+ and OUT1-.
GUID-20230830-SS0I-2KMS-WSPH-QS1LZ62C3QVV-low.svg Figure 2-5 TLV3802EVM Quick Start Setup

Next, is a scope shot capture of the inputs and outputs described in the propagation delay procedure. High to Low propagation delay is defined as when the signal generator input (IN+) reaches 0 V to when OUT- reaches 0 V. The propagation delay was measured at approximately 220 ps with the setup described.

GUID-20230901-SS0I-RD4Z-HQVT-K6819D0CS372-low.svg Figure 2-6 Quick-Start Example