CAT5251: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface

Description: The CAT5251 is four digital POTs integrated with c...
  • The CAT5251 is four digital POTs integrated with control logic and 16 bytes of NVRAM memory. Each digital POT consists of a series of resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 8-bit control register (WCR) independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 8-bit non-volatile memory data registers (DR) used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a SPI serial bus. On power-up, the contents of the first data register (DR0) for each of the four potentiometers is automatically loaded into its respective wiper control register.

    The CAT5251 can be used as a potentiometer or as a two terminal, variable resistor. It is intended for circuit level or system level adjustments in a wide variety of applications. It is available in the -40°C to 85°C industrial operating temperature range.
  • Features
  • Four linear-taper digital potentiometers
  • 256 resistor taps per potentiometer
  • End to end resistance 50 kΩ or 100 kΩ
  • Potentiometer control and memory access via SPI interface
  • Low wiper resistance, typically 100 Ω
  • Nonvolatile memory storage for up to four wiper settings for each potentiometer
  • Automatic recall of saved wiper settings at power up
  • 2.5 to 6.0 volt operation
  • Standby current less than 1 µA
  • 1,000,000 nonvolatile WRITE cycles
  • 100 year nonvolatile memory data retention
  • Industrial temperature range
  • Applications
  • Audio Equipment
  • Industrial Controls
  • End Products
  • Automobiles
  • Industrial Equipment
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    CAT5251WI-00-T1
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: SOIC-24W
  • Package Case Outline: 751BK
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 1000
  • CAT5251WI-50-T1
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: SOIC-24W
  • Package Case Outline: 751BK
  • MSL: 3
  • Container Type: REEL
  • Container Qty: 1000
  • CAT5251WI00
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: SOIC-24W
  • Package Case Outline: 751BK
  • MSL: 3
  • Container Type: TUBE
  • Container Qty: 31
  • CAT5251WI50
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: SOIC-24W
  • Package Case Outline: 751BK
  • MSL: 3
  • Container Type: TUBE
  • Container Qty: 31
  • CAT5251YI-00-T2
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: TSSOP-24
  • Package Case Outline: 948AR
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2000
  • Inventory

  • Market Leadtime (weeks):8 to 12
  • Arrow:0
  • ON Semiconductor:603
  • CAT5251YI-50-T2
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: TSSOP-24
  • Package Case Outline: 948AR
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2000
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • ON Semiconductor:2,000
  • CAT5251YI00
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: TSSOP-24
  • Package Case Outline: 948AR
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 62
  • CAT5251YI50
  • Status: Last Shipments
  • Compliance: Pb-free Halide free 
  • Description: Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface
  • Package Type: TSSOP-24
  • Package Case Outline: 948AR
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 62
  • Specifications
  • # of Pots:
  • # of Taps: 256 
  • Type: Potentiometer 
  • Control Interface: SPI 
  • Resistance Typ (kΩ): 100  50 
  • VH Max (V): VCC 
  • Wiper Position Memory: Yes 
  • VDD Max (V):
  • Package Type: TSSOP-24 
  • ON Semiconductor Full Web Site