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MAX5417L, MAX5417M, MAX5417N, MAX5417P

256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers

Industry's Smallest 256-Tap Digital Potentiometers Fit in a 3mm x 3mm TDFN

Product Details

The MAX5417/MAX5418/MAX5419 nonvolatile, linear-taper, digital potentiometers perform the function of a mechanical potentiometer by replacing the mechanics with a simple 2-wire digital interface, allowing communication with multiple devices. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points.

The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity in many applications. Each device is available with one of four factory-preset addresses (see the Ordering Information/Selector Guide in the full data sheet) and features an address input for a total of eight unique address combinations.

The MAX5417/MAX5418/MAX5419 provide three nominal resistance values: 50kΩ (MAX5417), 100kΩ (MAX5418), or 200kΩ (MAX5419). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gain-amplifier circuit configurations.

The MAX5417/MAX5418/MAX5419 are available in a 3mm x 3mm 8-pin TDFN package, and are specified over the extended -40°C to +85°C temperature range.

Key Features

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • Tiny 3mm x 3mm 8-Pin TDFN Package
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 50kΩ/100kΩ/200kΩ Resistor Values
  • Fast I²C-Compatible Serial Interface
  • 500nA (typ) Static Supply Current
  • Single-Supply Operation: +2.7V to +5.25V
  • 256 Tap Positions
  • ±0.5 LSB DNL in Voltage-Divider Mode
  • ±0.5 LSB INL in Voltage-Divider Mode
  • EV Kit Available

Applications/Uses

  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control
Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 1
Control Interface 2-Wire Serial
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 50
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 325
ICC @5V (µA) (max) 1
Package/Pins TDFN/8
Budgetary
Price (See Notes)
$2.08 @1k
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Simplified Block Diagram

MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram Zoom icon

Technical Docs

Design & Development

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Description

The MAX5417L evaluation system (EV system) consists of a MAX5417L evaluation kit (EV kit) and a companion command module interface board (CMODUSB).

The MAX5417L EV kit is an assembled and tested PC board that features the MAX5417L 50kΩ, linear-taper digital potentiometer. The MAX5417L IC features an internal nonvolatile EEPROM used to store the potentiometer's wiper position for initialization during power-up. The EEPROM is programmed through the I²C-compatible serial interface, transmitting at rates up to 400kbps. The MAX5417L is programmed with a factory-preset address and features an address input for a total of two unique address combinations. The MAX5417L EV kit can also be used to evaluate other versions of the MAX5417, MAX5418 (100kΩ), and MAX5419 (200kΩ) digital potentiometers.

The EV kit also includes Windows® 98-/2000-/XP-compatible software that provides a professional user interface for exercising the MAX5417L's features. The program is menu-driven and offers a graphical user interface (GUI) complete with control buttons and a track bar.

The CMODUSB command module allows a personal computer (PC) to use its USB port to emulate an I²C 2-wire interface. Order the MAX5417LEVCMODU for a complete PC-based EV kit. Order the MAX5417LEVKIT if a CMODUSB command module or an I²C-compatible 2-wire interface system has already been purchased with a Maxim EV system.

View Details

Features

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 2.7V to 5.25V Single-Supply Operation
  • Selectable Device Address Input
  • I²C-Compatible Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Include Windows 98-/2000-/XP-Compatible Software and Demo PC Board
  • Evaluate the MAX5417/MAX5418/MAX5419
  • Assembled and Tested

Description

The MAX5417L evaluation system (EV system) consists of a MAX5417L evaluation kit (EV kit) and a companion command module interface board (CMODUSB).

The MAX5417L EV kit is an assembled and tested PC board that features the MAX5417L 50kΩ, linear-taper digital potentiometer. The MAX5417L IC features an internal nonvolatile EEPROM used to store the potentiometer's wiper position for initialization during power-up. The EEPROM is programmed through the I²C-compatible serial interface, transmitting at rates up to 400kbps. The MAX5417L is programmed with a factory-preset address and features an address input for a total of two unique address combinations. The MAX5417L EV kit can also be used to evaluate other versions of the MAX5417, MAX5418 (100kΩ), and MAX5419 (200kΩ) digital potentiometers.

The EV kit also includes Windows® 98-/2000-/XP-compatible software that provides a professional user interface for exercising the MAX5417L's features. The program is menu-driven and offers a graphical user interface (GUI) complete with control buttons and a track bar.

The CMODUSB command module allows a personal computer (PC) to use its USB port to emulate an I²C 2-wire interface. Order the MAX5417LEVCMODU for a complete PC-based EV kit. Order the MAX5417LEVKIT if a CMODUSB command module or an I²C-compatible 2-wire interface system has already been purchased with a Maxim EV system.

View Details

Features

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • 2.7V to 5.25V Single-Supply Operation
  • Selectable Device Address Input
  • I²C-Compatible Serial Interface
  • Easy-to-Use Menu-Driven Software
  • Include Windows 98-/2000-/XP-Compatible Software and Demo PC Board
  • Evaluate the MAX5417/MAX5418/MAX5419
  • Assembled and Tested

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Parameters

Parametric specs for Digital Potentiometers
Steps 256
# Potentiometers 1
Control Interface 2-Wire Serial
Taper Linear
Wiper Memory Non-Volatile
REND-TO-END (kΩ) 50
Temp. Coeff. (ppm/°C) (typ) 50
Wiper Resistance (Ω) (typ) 325
ICC @5V (µA) (max) 1
Package/Pins TDFN/8
Budgetary
Price (See Notes)
$2.08 @1k

Key Features

  • Power-On Recall of Wiper Position from Nonvolatile Memory
  • Tiny 3mm x 3mm 8-Pin TDFN Package
  • 35ppm/°C End-to-End Resistance Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • 50kΩ/100kΩ/200kΩ Resistor Values
  • Fast I²C-Compatible Serial Interface
  • 500nA (typ) Static Supply Current
  • Single-Supply Operation: +2.7V to +5.25V
  • 256 Tap Positions
  • ±0.5 LSB DNL in Voltage-Divider Mode
  • ±0.5 LSB INL in Voltage-Divider Mode
  • EV Kit Available

Applications/Uses

  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control

Description

The MAX5417/MAX5418/MAX5419 nonvolatile, linear-taper, digital potentiometers perform the function of a mechanical potentiometer by replacing the mechanics with a simple 2-wire digital interface, allowing communication with multiple devices. Each device performs the same function as a discrete potentiometer or variable resistor and has 256 tap points.

The devices feature an internal, nonvolatile EEPROM used to store the wiper position for initialization during power-up. The fast-mode I²C-compatible serial interface allows communication at data rates up to 400kbps, minimizing board space and reducing interconnection complexity in many applications. Each device is available with one of four factory-preset addresses (see the Ordering Information/Selector Guide in the full data sheet) and features an address input for a total of eight unique address combinations.

The MAX5417/MAX5418/MAX5419 provide three nominal resistance values: 50kΩ (MAX5417), 100kΩ (MAX5418), or 200kΩ (MAX5419). The nominal resistor temperature coefficient is 35ppm/°C end-to-end, and only 5ppm/°C ratiometric. This makes the devices ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-drift, programmable gain-amplifier circuit configurations.

The MAX5417/MAX5418/MAX5419 are available in a 3mm x 3mm 8-pin TDFN package, and are specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram Zoom icon

Technical Docs

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