Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | Nonvolatile digital potentiometer |
| Nominal resistance | 2.1 kΩ |
| Resolution | 6 bit / 64 taps |
| Interface | Up/Down |
| Memory | EEPROM-backed wiper |
| Supply range | 2.7 V to 5.5 V |
| Typical wiper resistance | 75 Ω |
| Family status | In Production |
Product Overview
The MCP4021-202E/MS is the 2.1 kΩ extended-temperature MSOP-8 variant of Microchip’s 64-step nonvolatile digital potentiometer. Unlike volatile digital-pot families, its EEPROM-backed wiper can recall a stored setting after power cycling.
The 2.1 kΩ option is relatively low resistance, so the 75 Ω typical wiper resistance is a meaningful portion of the programmed value near the low end of the range.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Nominal resistance | 2.1 kΩ |
| Resolution | 64 taps / 6 bit |
| Supply voltage | 2.7–5.5 V |
| Typical wiper resistance | 75 Ω |
| Static supply current | 1 µA max with interface inactive |
| Terminal/wiper current | 2.5 mA max |
| Typical bandwidth | 4 MHz at code 1F, 30 pF load |
| Typical ratiometric tempco | 10 ppm/°C |
| Typical rheostat INL | ±0.25 LSB at 5.5 V |
| Package | MSOP-8 |
Design Considerations
Keep A, B and W voltages between the supply rails and respect the 2.5 mA terminal-current limit. At low resistance codes, wiper resistance can dominate the effective resistance.
EEPROM writes use more current and have finite endurance. Store settings only when necessary rather than continuously mirroring every adjustment.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
Request a Quote
To request a quotation, provide the manufacturer part number, required quantity, destination, target Date Code if applicable, and any testing or inspection requirements.
For a related Up/Down-controlled device without nonvolatile wiper retention, compare the MCP4011-103E/SN 10 kΩ volatile digital potentiometer. Its nominal resistance and power-up behavior differ from this MCP4021 nonvolatile device. Explore the digital potentiometer category for other interfaces.
