TPL0501EVM

TPL0501 256-tap single-channel digital potentiometer with SPI evaluation module

TPL0501EVM

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Overview

The TPL0501 is a single channel, linear-taper digital potentiometer with 256 wiper positions. This device can be used as a three-terminal potentiometer or as a two-terminal rheostat. The TPL0501 has an end–to-end resistance of 100kΩ. The internal registers of the TPL0501 can be accessed using a SPI-compatible interface. The TPL0501 has a nominal temperature coefficient of 35ppm/°C. The TPL0501 is available in an 8-pin SOT-23 and 8-microQFN package with a specified temperature range of -40°C to +125°C.

The TPL0501EVM is designed to operate with the Texas Instruments LaunchPad (MSP-EXP430G2). The TPL0501EVM comes with a pre-programmed MSP430G2553 microcontroller which is to be inserted in the DIP socket on the LaunchPad. The LaunchPad can be purchased separately at https://www.ti.com/launchpad

The TPL0501EVM has two different evaluation modes:

Mode 1 – Adjustable voltage reference mode – in this mode the TPL0501 is used in conjunction with an LMV321 op amp as an adjustable voltage reference circuit.

Mode 2 – Variable gain mode – in this mode the TPL0501 is configured as part of a variable gain non-inverting amplifier. The gain of the amplifier can be controlled by a digital interface. This mode can be used to evaluate the bandwidth of the TPL0501.

  • Works with low cost MSP430 based LaunchPad platform
  • Simple GUI to control EVM
  • EVM can be operated in two different modes
    • Adjustable Voltage reference mode
    • Variable gain mode
  • Board is entirely powered by USB
    • Kitting List

    Digital potentiometers (digipots)
    TPL0501-100 256-tap single-channel digital potentiometer (digipot) with SPI

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    Evaluation board

    TPL0501EVM – TPL0501 256-tap single-channel digital potentiometer with SPI evaluation module

    Support software

    TPL0501EVM Software – SLIC017.ZIP (439KB)

    TI's Standard Terms and Conditions for Evaluation Items apply.

    Technical documentation

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    Type Title Date
    * User guide TPL0501EVM User's Guide Sep. 09, 2011
    More literature TPL0501EVM EU Declaration of Conformity (DoC) Jan. 02, 2019

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