Top

Triple, 8-Bit NV Variable Resistor with Dual Settings and User EEPROM

Low Cost, Small Size, and a Rich Feature Set, Ideal Replacement for Conventional Mechanical-Trimming Resistors, Specifically in Module Applications

Product Details

Key Features

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 3
Control Interface I2C
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 20
30
50
Res. Tol. (%) 20
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 250
ICC @5V (µA) (max) 250
Package/Pins TSSOP/14
Budgetary
Price (See Notes)
1.16
View More

Simplified Block Diagram

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Parameters

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 3
Control Interface I2C
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 20
30
50
Res. Tol. (%) 20
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 250
ICC @5V (µA) (max) 250
Package/Pins TSSOP/14
Budgetary
Price (See Notes)
1.16

Key Features

  • Three 256-Position Linear Digital Resistors
  • Full-Scale Resistances 50kΩ, 30kΩ, 20kΩ
  • Dual NV Settings for Each Resistor
  • Low Temperature-Coefficient Resistors
  • I²C Serial Interface
  • Wide Operating Voltage (2.4V to 5.5V)
  • Two-Level Password Write Protection
  • 232 Bytes of User EEPROM
  • Programmable Slave Address
  • -40°C to +95°C Operating Temperature Range

Applications/Uses

Description

The DS3901 is a triple, 8-bit nonvolatile (NV) variable resistor. Each of the resistors has two setting registers, which are selectable by software or by pin configuration. The selected register determines the value of the variable resistor. Additionally, all three resistors have a high-impedance setting. Resistor R0 has the additional flexibility of allowing an external shunt resistor to provide increased dynamic range. Internal address settings allow the DS3901 slave address to be programmed to one of 128 possible addresses. The DS3901 also features an optional password-protection scheme that allows the protection of sensitive data.

Simplified Block Diagram

DS3901: Typical Operating Circuit DS3901: Typical Operating Circuit Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .