The MCP414X/416X/424X/426X are Microchip 12-bit single-ended SPI digital potentiometers that can be configured as single or dual potentiometers and offer multiple options for resistance, resolution, and resistor network terminal disconnect.
The MCP414X/416X/424X/426X family are 7‑bit and 8‑bit SPI digital potentiometers and rheostats with non‑volatile memory. They offer single or dual resistor network options, various resistance values (5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), and features such as WiperLock™ technology, write‑protect, and brown‑out reset.
The datasheet provides detailed electrical characteristics, AC/DC specifications, standard operating conditions, and package options (PDIP, SOIC, TSSOP, QFN, DFN). It also includes code‑protection information and worldwide sales contacts.
| Resolution | 7‑bit: 128 resistors (129 steps); 8‑bit: 256 resistors (257 steps) |
|---|---|
| Low Wiper Resistance | 75 Ω typ. |
| Absolute Tempco (Rheostat) | 50 ppm typical (0 °C to 70 °C) |
| Ratiometric Tempco (Potentiometer) | 15 ppm typical |
| Supply Voltage | 2.7 V to 5.5 V (operating), 1.8 V to 5.5 V (device operation) |
| Operating Temperature | -40 °C to +125 °C (extended) |
| Maximum Output Current | 225 mA |
| Resistor Network Options | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ |
The typical wiper resistance is 75 Ω.
The devices support 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ resistor networks.
They operate from –40 °C to +125 °C (extended range).
The devices operate with a supply voltage between 2.7 V and 5.5 V (device operation from 1.8 V to 5.5 V).