MCP434X/436X is a quad resistor network from Microchip, which provides potentiometer or rheostat configuration options, low temperature coefficient, non-volatile memory, high bandwidth, SPI serial interface, etc.
The MCP434X/436X family provides a quad resistor network configurable as a potentiometer or rheostat, with 7‑bit (128 resistors, 129 taps) or 8‑bit (256 resistors, 257 taps) resolution. It includes non‑volatile memory, WiperLock™ technology, and supports a wide operating voltage range of 2.7 V to 5.5 V.
Electrical characteristics cover supply voltage, current limits, temperature range, and performance parameters such as a typical wiper resistance of 75 Ω and a maximum output current of 225 mA. Package options include TSSOP‑14, TSSOP‑20, and QFN‑20, with detailed pin‑out diagrams and control register descriptions.
| Resolution (7‑bit) | 128 resistors (129 taps) |
|---|---|
| Resolution (8‑bit) | 256 resistors (257 taps) |
| Wiper Resistance | 75 Ω (typical) |
| Supply Voltage (Vpp) | 2.7 V to 5.5 V |
| Operating Temperature | -40 °C to +125 °C |
| Maximum Output Current (sink) | 225 mA |
The typical wiper resistance is 75 Ω.
The device operates with Vpp from 2.7 V to 5.5 V.
In 8‑bit mode the device provides 257 taps.
The device is rated for temperatures up to +125 °C.