Dual 100kΩ digital pot — 257 taps per channel, I²C, non-volatile
The MCP4662T-104E/MF is a dual-channel digital potentiometer from Microchip's MCP46XX family, configured as a rheostat with 100 kOhm end-to-end resistance and 257 tap positions per channel. Linear taper means the resistance between the wiper and terminal B changes by a constant step of about 390 Ohm per tap — no log scaling, so this part is suited for voltage dividers, programmable gain amplifiers, and calibration trims rather than audio volume control. Non-volatile memory stores the wiper position at power-off via internal EEPROM — the IC powers up at the last programmed tap, eliminating the need for a firmware re-initialization routine on every POR cycle. The I²C interface supports a selectable address pin, allowing up to four devices on the same bus without an external I²C mux. Supply range spans 1.8V to 5.5V, covering 1.8V MCU rails and 3.3V or 5V mixed-signal domains from a single supply. The -40°C to 125°C operating range qualifies the part for industrial and under-hood automotive environments — not just commercial temperature bins.
Package and thermal — 10-DFN exposed pad, 3x3 mm
Housed in a 10-VFDFN exposed-pad package, supplier device package 10-DFN (3x3 mm). Tape and reel packaging — 3,000 units per reel, standard for pick-and-place. Reflow profile per JEDEC J-STD-020 for MSL level 1 (no floor-life limit before reflow).
Active lifecycle — no obsolescence risk
Product status is Active — no NRND, no EOL notice, no last-time-buy deadline. Microchip continues to manufacture and support the MCP4662T-104E/MF through authorized distribution. ROHS3 compliant.