256-tap high-accuracy digital potentiometer (digipot) with buffered wiper


Product details


Number of steps 256 Number of channels (#) 1 Interface type I2C Memory Non-Volatile Operating temperature range (C) -40 to 125 open-in-new Find other Digital potentiometers (digipots)

Package | Pins | Size

WSON (DSG) 8 4 mm² 2 x 2 open-in-new Find other Digital potentiometers (digipots)


  • 256-position digital potentiometer for voltage-divider applications

  • 1 LSB INL and DNL
  • Wide operating range
    • Power supply: 1.8 V to 5.5 V
    • Temperature range: –40°C to +125°C
  • Buffered wiper for improved load regulation
  • FB pin for precision current sink applications
  • Wiper lock function to protect from accidental writes to the digital potentiometer
  • I2C interface
    • Standard, fast, and fast plus modes
    • 1.62-V VIH with VDD = 5.5 V
  • User-programmable nonvolatile memory (NVM/EEPROM)
    • Save and recall all register settings
  • Internal reference
  • Very low power: 0.2 mA at 1.8 V
  • Flexible startup: High impedance or 10K-GND
  • Tiny package: 8-pin WSON (2 mm × 2 mm)
open-in-new Find other Digital potentiometers (digipots)


The TPL1401is a digital potentiometer (digipot) with a buffered wiper. Unlike standard digipots, this device offers higher load regulation in voltage-divider applications as a result of the integrated buffered wiper.

The TPL1401 makes in-factory calibration and trimming easier with integrated nonvolatile memory (NVM), and a simple I2C digital interface to communicate with the device. This device supports I2C standard mode (100 kbps), fast mode (400 kbps), and fast mode plus (1 Mbps).

The TPL1401 operates with either the internal reference or with the power supply as the reference, and provides a full-scale output of 1.8 V to 5.5 V. This device also includes a wiper lock feature, a feedback (FB) pin for current-sink applications, and two bytes of user-programmable NVM space. The TPL1401 has a power-on-reset (POR) circuit that makes sure all the registers start with default or user-programmed settings using NVM. The digipot output powers on in high-impedance mode (default); this setting can be programmed to 10kΩ-GND using NVM.

The TPL1401 is tiny, feature rich, and an easy-to-use building block device that can be integrated into many applications.

The TPL1401 operates within the temperature range of –40°C to +125°C.


open-in-new Find other Digital potentiometers (digipots)
Similar products you might be interested in
open-in-new Compare products
Similar functionality to the compared device.
TPL0401A-10 ACTIVE 128-tap single-channel digital potentiometer (digipot) with I2C interface (address 0101110) 7-bit true variable for customers not seeking a buffered-wiper device like TPL1401
TPL0401B-10 ACTIVE 128-tap single-channel digital potentiometer (digipot) with I2C interface (address 0111110) 7-bit true variable for customers not seeking a buffered-wiper device like TPL1401

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet TPL1401 256-Tap, High-Accuracy, Digital Potentiometer With Buffered Wiper datasheet Sep. 16, 2020
Application note Microphone Sensitivity Adjustments Using TPL1401 Apr. 27, 2021
Application note Programmable comparator circuit with buffered digital potentiometer Apr. 19, 2021
More literature New TI smart analog and smart DAC adds intelligence to analog without soft Dec. 15, 2020
User guide TPL1401 Evaluation Module User's Guide Oct. 05, 2020
Technical article Doing the math: The inside story of the Analog Engineer’s Pocket Reference Mar. 02, 2015
Technical article SAR ADC response times: Interface topology makes a difference (Part 3) Feb. 17, 2015
Technical article SAR ADC response times: Interface topology makes a difference (Part 2) Feb. 13, 2015
Technical article SAR ADC response times: Interface topology makes a difference (Part 1) Jan. 16, 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The TPL1401 evaluation module (EVM) is an easy-to-use platform to evaluate the functionality and performance of the TPL1401 product. TPL1401 is a buffered voltage-output digital potentiometer (DPOT). This product has nonvolatile memory (NVM), an internal reference, and an I2C interface.

TPL1401 (...)

  • 256-position DPOT for voltage divider
  • 1 LSB integral nonlinearity (INL) and differential nonlinearity (DNL)
  • Buffered wiper for improved load regulation
  • Wiper lock function protects accidental writes to DPOT

Design tools & simulation

PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

CAD/CAE symbols

Package Pins Download
WSON (DSG) 8 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​