MCP414x/416x/424x/426x Digital Potentiometers. The Microchip MCP413x, MCP415x, MCP423x and MCP425x range of devices are Digital Potentiometers with a SPI interface and EEPROM memory. Featured is WiperLock Technology, providing a method of ‘locking ‘ the wiper configuration. To unlock a high-voltage command is required (>8.5 V), protecting the setting during normal operation. 7-bit (129 steps) and 8-bit (257 steps) versions are available in various R ;sub>AB ;/sub> resistance options from 5 kΩ to 100 kΩ. Further variants also give the choice between Rheostat and Potentiometer pinouts, Single and Dual Resistor Network options are also available. Features. Zero Scale to Full-Scale Wiper Operation Low Wiper Resistance: 75 Ω (typical) Low Temperature Coefficient: Absolute (Rheostat) 50 ppm, Ratiometric (Potentiometer) 15 ppm (typical) Automatic Recall of Saved Wiper Setting WiperLock Technology SPI Serial Interface Resistor Network Terminal Disconnect Feature Brown-Out Reset Protection: 1.5 V (typical) Serial Interface Inactive Current: 2.5 μA (typical) High-Voltage Tolerant Digital Inputs: Up to 12.5 V Supports Split Rail Applications Internal Weak Pull-Up on all Digital Inputs Wide Operating Voltage: 1.8 V to 5.5 V Wide Bandwidth (-3 dB) Operation: 2 MHz for 5.0 kΩ device (typical). Model Variants. Potentiometer Wiper Configuration: MCP4141, MCP4161, MCP4241, MCP4261 Rheostat Wiper Configuration: MCP4142, MCP4162, MCP4242, MCP4262 Single Resistor Network: MCP4141, MCP4142, MCP4161, MCP4162 Dual Resistor Network: MCP4241, MCP4242, MCP4261, MCP4262 7-bit, 128 Resistors (129 steps): MCP4141, MCP4142, MCP4241, MCP4142 8-bit, 256 Resistors (257 steps): MCP4161, MCP4162, MCP4261, MCP4162 More information:  | | Control Interface: | Serial-SPI | Resistance Value: | 5kΩ | Number of Positions: | 257 | Taper Type: | Linear | Memory Type: | Non-Volatile | Number of Pots per Package: | 1 | Mounting Type: | Surface Mount | Package Type: | SOIC | Pin Count: | 8 | Power Supply Type: | Single | Typical Single Supply Voltage: | 1.8 to 5.5 V | Dimensions: | 4.9 x 3.9 x 1.25mm | Height: | 1.25mm | Length: | 4.9mm | Maximum Operating Temperature: | +125 °C |
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