TCA9416 Evaluation Module

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1 Introduction

This EVM allows designers to evaluate the TCA9416 device at different loading conditions (pullup resistors and bus capacitance), VCC voltages, and series resistances, if needed. The back of EVM board is populated with the DTM package (denoted as U1). The EVM supports the DDF package (denoted as U2); however, it must be populated by the designer.

1.1 Features

This EVM supports:

Adjustable pullup resistors on both sides of the TCA9416 with jumper shunts
Adjustable load capacitance on both sides of the TCA9416 with DIP switches
Test Points on SDA and SCL on both sides of the TCA9416
Male header connections to all TCA9416 pins for ease of use
Unpopulated DDF package (denoted as U2 on the top side of the board)

2 EVM Setup

The following equipment is needed to evaluate the TCA9416:

Power supply capable of supplying the desired voltage to the TCA9416 and I²C bus
4-channel oscilloscope to observe I²C transactions on both sides of the TCA9416
Microcontroller, processor, or digital analyzer which can send and receive I²C