MAX5418:256-Tap, Nonvolatile, I²C-Interface, Digital Potentiometers

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

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
MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram
MAX5417, MAX5417L, MAX5417M, MAX5417N, MAX5417P, MAX5418, MAX5419: Functional Diagram
Applications/Uses
  • Liquid-Crystal Display (LCD) Contrast Control
  • Low-Drift Programmable-Gain Amplifiers
  • Mechanical Potentiometer Replacements
  • Volume Control
DataSheet
titleDownload file
MAX5417-MAX5419 Data SheetMAX5417-MAX5419.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
MAX5418Linear12-Wire SerialNon-Volatile256100503251TDFN-EP/8$1.97 @1k
MAX5419200TDFN-EP/8$1.97 @1k
MAX541750TDFN-EP/8$1.98 @1k
Design kits & evaluation modules
Quality and Environmental Data
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5418LETANo Longer AvailableMAX5418LETA+TDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418LETA+ActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418LETA+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418LETA-TNo Longer AvailableMAX5418LETA+TTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418METANo Longer AvailableMAX5418META+TDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418META+ActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418META+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418META-TNo Longer AvailableMAX5418META+TTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418NETA+No Longer AvailableTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418NETA+TNo Longer AvailableTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5418NETA-TNo Longer AvailableTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418PETANo Longer AvailableMAX5418PETA+TDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5418PETA+ActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418PETA+TActiveTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CLead Free
MAX5418PETA-TNo Longer AvailableMAX5418PETA+TTDFN-EP,;8 pin;9.6 mm²-40°C to +85°CNo
MAX5417-MAX5419.pdf MAX5419
MAX5417-MAX5419_cn.pdf MAX5419
Murphy's Law and the Risks of Designing "Off Data Sheet" MAX5418
MAX5418.pdf MAX5418
MAX5417-MAX5419_cn.pdf MAX5419