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Microchip Technology MCP4161 Digital Potentiometer ICs

Microchip Technology MCP4161 Digital Potentiometer ICs support 7-bit and 8-bit single/dual resistor networks and potentiometer or rheostat configuration options. These potentiometer ICs offer a wide range of product offerings using an SPI interface. The MCP4161 ICs allow application-specific calibration settings to be secured in the EEPROM. These digital potentiometer ICs feature non-volatile memory with an automatic recall of saved wiper settings and WiperLock™ technology. The MCP4161 potentiometer ICs operate at a wide operating voltage range of 2.7V to 5.5V and 2MHz bandwidth for a 5kΩ device.

Features

  • Single/dual resistor network options
  • Potentiometer or rheostat configuration options
  • Zero-scale to full-scale wiper operation
  • Supports Split Rail applications
  • Internal weak pull-up on all digital inputs
  • Non-volatile memory:
    • Automatic recall of saved wiper setting
    • WiperLock™ technology
  • Resistor network terminal disconnect feature via:
    • Shutdown pin (SHDN)
    • Terminal Control (TCON) register
  • Write protect feature:
    • Hardware Write Protect (WP) control pin
    • Software Write-Protect (WP) configuration pin

Specifications

  • 1.5V brown-out reset protection
  • 2.5μA serial interface inactive current
  • Up to 12.5V high-voltage tolerant digital inputs
  • Resistor network resolution:
    • 7-bit 128 resistors (129 steps)
    • 8-bit 256 resistors (256 steps)
  • 5kΩ, 10kΩ, 50kΩ, and 100kΩ RAB resistance options
  • 75Ω (typical) low wiper resistance
  • Low Tempco:
    • Absolute (rheostat): 50ppm (0°C to 70°C)
    • Ratiometric (potentiometer): 15ppm
  • SPI serial interface (10MHz, modes 0,0 and 1,1)
    • High-speed Read/Writes to wiper registers
    • Read/Write to data EEPROM registers
    • Serially enabled EEPROM write protect
    • SDI/SDO multiplexing (MCP41X1 only)
  • Wide operating Voltage:
    • 2.7V to 5.5V - device characteristics standard
    • 1.8V to 5.5V - device operation
  • Wide Bandwidth (-3dB) operation:
    • 2MHz for 5kΩ device
  • -40°C to +125°C operating temperature range

Block Diagram

Block Diagram - Microchip Technology MCP4161 Digital Potentiometer ICs

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Opublikowano: 2019-12-30 | Zaktualizowano: 2023-06-13