SNAU276A January   2022  – November 2023

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Overview
    1. 1.1 REF35EVM Features
    2. 1.2 REF35EVM Schematic
    3. 1.3 REF35EVM Bill of Materials
    4. 1.4 REF35EVM Board
  5. 2Quick Setup Guide
    1. 2.1 Electrostatic Discharge Warning
    2. 2.2 Power Supply Setup and Functional Test
  6. 3Layout
  7. 4Revision History

1 Overview

The REF35EVM is a voltage reference evaluation module that demonstrates the REF35 integrated circuit from Texas Instruments (TI).
The REF35 is an ultra-low power voltage reference with maximum 10 ppm/C temperature drift. The REF35 is used primarily as a voltage reference for low power data converters.
The REF35 is operable from VREF + VDO to 6 V. The REF35 uses only 1.4 μA of current in active mode. This device comes with an enable pin that allows the device to be set in shutdown mode. The REF35 consumes only 0.1 μA of current under the shutdown condition. REF35 is available for a wide range of applications such as flow transmitters, blood glucose monitors, servo drive control modules, power quality analyzers, fault indicators, oscilloscopes and process analytics.
The REF35EVM features a user selectable-wide VIN input which uses a TPS7B8150 linear regulator, allowing the user to widen the input range to 40 V if desired. The VIN header is connectable to an external power supply to provide power. All of the REF35 input and output pins are accessible for external connection via test headers.