MAX5394:Single, 256-Tap Volatile, SPI, Low-Voltage Linear Taper Digital Potentiometer

Industry’s Smallest, Lowest Power, Lowest Voltage Digital Potentiometer

The MAX5394 single, 256-tap volatile, low-voltage linear taper digital potentiometer offers three end-to-end resistance values of 10kΩ, 50kΩ, and 100kΩ. Potentiometer terminals are independent of supply for voltages up to 5.25V with single-supply operation from 1.7V to 5.5V (charge pump enabled). User-controlled shutdown modes allow the H, W, or L terminal to be opened with the wiper position set to zero-code, midcode, full-code, or the value contained in the wiper register. Ultralow-quiescent supply current (< 1µA) can be achieved for supply voltages between 2.6V and 5.5V by disabling the internal charge pump and not allowing potentiometer terminals to exceed the supply voltage by more than 0.3V. The MAX5394 provides a low 50ppm/°C end-to-end temperature coefficient and features a SPI serial interface. The small package size, low operating supply voltage, low supply current, and automotive temperature range of the MAX5394 make the device uniquely suited for the portable consumer market and battery-backup industrial applications. The MAX5394 is available in a lead-free, 8-pin TDFN (2mm x 2mm) package. The device operates over the -40°C to +125°C automotive temperature range.

Key Features
  • Single Linear Taper 256-Tap Positions
  • 10kΩ, 50kΩ, and 100kΩ End-to-End Resistance
  • 1.7V to 5.5V Extended Single Supply
  • 0 to 5.25V H, W, L Operating Voltage Independent of VDD
  • 1µA (typ) Supply Current in Low-Power Mode
  • ±1.0 LSB INL, ±0.5 LSB DNL (max) Wiper Accuracy
  • Power-On Sets Wiper to Midscale
  • 50ppm/°C End-to-End Temperature Coefficient
  • 5ppm/°C Ratiometric Temperature Coefficient
  • -40°C to +125°C Operating Temperature Range
  • 2mm x 2mm, 8-Pin TDFN Package
  • SPI-Compatible Serial Interface
MAX5394: Functional Diagram
MAX5394: Functional Diagram
Applications/Uses
  • Battery-Powered Systems
  • Mechanical Potentiometer Replacement
  • Portable Electronics
  • System Calibration
DataSheet
titleDownload file
MAX5394 Data SheetMAX5394.pdf
Parametrics
Part NumberTaperPOTsControl InterfaceWiper MemoryStepsREND-TO-END
(kΩ)
Res. Tol.
(%)
Temp. Coeff.
(ppm/°C)
Wiper Resistance
(Ω)
ICC @5V
(µA)
Package/PinsBudgetary
Price
typtypmaxSee Notes
MAX5394Linear13-Wire Serial SPIVolatile25610
50
100
25502525TDFN-EP/8$0.62 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX5395:Single, 256-Tap Volatile, I2C, Low-Voltage Linear Taper Digital Potentiometer
  • MAX5391:Dual 256-Tap, Volatile, Low-Voltage Linear Taper Digital Potentiometers
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX5394LATA+ActiveTDFN-EP,;8 pin;4.2 mm²-40°C to +125°CLead Free
MAX5394LATA+TActiveTDFN-EP,;8 pin;4.2 mm²-40°C to +125°CLead Free
MAX5394MATA+ActiveMAX5394MATA+TTDFN-EP,;8 pin;4.4 mm²-40°C to +125°CLead Free
MAX5394MATA+TActiveTDFN-EP,;8 pin;4.4 mm²-40°C to +125°CLead Free
MAX5394NATA+ActiveMAX5394NATA+TTDFN-EP,;8 pin;4.4 mm²-40°C to +125°CLead Free
MAX5394NATA+TActiveTDFN-EP,;8 pin;4.4 mm²-40°C to +125°CLead Free
MAX5394.pdf MAX5394
MAX5394.pdf MAX5394
MAX5394.pdf MAX5394
Scaling Power-Supply Slopes with a Reliable Power-On Reset (POR) MAX5495
MAX5394.pdf MAX5394