Texas Instruments TLV3801EVM, User Manual

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User’s Guide
TLV3801EVM User’s Guide
ABSTRACT
The TLV3801EVM is an evaluation board designed to evaluate the high-speed TLV3801 comparator. The
TLV3801EVM has layout options intended to make it simple to evaluate timing performance with different
measurement tools. The output of the TLV3801 is designed for low-voltage differential signals (LVDS), that
provide high-speed signals to interconnect devices such as FPGAs with minimal power dissipation.
Table of Contents
1 Introduction ............................................................................................................................................................................. 2
2 Features ................................................................................................................................................................................... 3
3 EVM Specifications ................................................................................................................................................................. 4
4 Recommended Equipment ..................................................................................................................................................... 5
5 How to Make a TPHL Propagation Delay Measurement With Split Supplies .................................................................... 6
6 Board Setup ............................................................................................................................................................................. 8
6.1 Supply Voltage................................................................................................................................................................... 8
6.2 Inputs................................................................................................................................................................................. 8
6.3 Outputs............................................................................................................................................................................... 9
7 Layout Guidelines ................................................................................................................................................................. 10
8 Schematic .............................................................................................................................................................................. 12
9 Bill of Materials ..................................................................................................................................................................... 13
List of Figures
Figure 1-1. TLV3801EVM Board Top View.................................................................................................................................. 2
Figure 2-1. TLV3801 Block Diagram............................................................................................................................................ 3
Figure 3-1. TLV3801EVM Pin Assignments................................................................................................................................. 4
Figure 3-2. How EVM Designations are Mapped to the TLV3801 Pinout.................................................................................... 4
Figure 5-1. TLV3801 EVM Propagation Delay with Latch Setup................................................................................................. 6
Figure 5-2. Quick Start Example.................................................................................................................................................. 7
Figure 6-1. TLV3801EVM Supply Voltage Connection................................................................................................................ 8
Figure 6-2. Input Side Schematic Without Optional Resistors R4 and R5................................................................................... 8
Figure 6-3. Configuration for LVDS Inputs Using the Unused Pads of R4 and R5...................................................................... 9
Figure 6-4. Output Side Schematic.............................................................................................................................................. 9
Figure 7-1. Layers...................................................................................................................................................................... 10
Figure 7-2. TLV3801 EVM Block Diagram................................................................................................................................. 11
Figure 8-1. TLV3801 EVM Schematic........................................................................................................................................ 12
List of Tables
Table 9-1. BOM.......................................................................................................................................................................... 13
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SNOU184 – NOVEMBER 2021
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