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TPL1401

ACTIVE

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

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Data sheet

TPL1401

ACTIVE
Data sheet Order now

Product details

Number of steps 256 Number of channels 1 Interface type I2C Memory Non-Volatile Operating temperature range (°C) -40 to 125 Rating Catalog
Number of steps 256 Number of channels 1 Interface type I2C Memory Non-Volatile Operating temperature range (°C) -40 to 125 Rating Catalog
WSON (DSG) 8 4 mm² 2 x 2

  • 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)

  • 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)

The TPL1401 is 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.

The TPL1401 is 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.
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* Data sheet TPL1401 256-Tap, High-Accuracy, Digital Potentiometer With Buffered Wiper datasheet PDF | HTML 16 Sep 2020
Circuit design Microphone Sensitivity Adjustments Using TPL1401 PDF | HTML 27 Apr 2021
Circuit design Programmable comparator circuit with buffered digital potentiometer PDF | HTML 19 Apr 2021
More literature New TI smart analog and smart DAC adds intelligence to analog without soft 15 Dec 2020
EVM User's guide TPL1401 Evaluation Module User's Guide PDF | HTML 05 Oct 2020

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Evaluation board

TPL1401EVM — TPL1401 256-tap high-accuracy digital potentiometer (digipot) with buffered wiper evaluation module

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 (...)

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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 (...)
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