MCP4021-503E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4021-503E/MS is a 50 kΩ single-channel digital potentiometer from Microchip with 64 resistor taps, non-volatile memory, and an increment/decrement serial interface in an 8-pin MSOP package. It stores the wiper position in EEPROM so settings survive power cycles. Suitable for programmable gain, offset, and calibration circuits in industrial and consumer designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4021-503E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6830(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP4021-503E/MS?
- 50 kΩ end-to-end resistance with 64 linear wiper positions for fine resolution
- Non-volatile EEPROM stores wiper position across power cycles without host intervention
- Simple 2-wire increment/decrement serial interface (UP/DOWN pins) for easy microcontroller integration
- 8-pin MSOP package enabling space-efficient PCB layouts
- 200 Hz bandwidth suitable for DC and low-frequency signal-conditioning applications
- Single-supply operation compatible with 2.7V to 5.5V systems
What is MCP4021-503E/MS used for?
The MCP4021-503E/MS is used in programmable gain amplifier stages, LCD contrast adjustment circuits, and sensor offset calibration where a digitally controlled resistance must retain its value after power-down. Its simple increment/decrement interface suits low-pin-count microcontrollers in battery-powered consumer devices and industrial calibration equipment. The non-volatile wiper memory eliminates the need for an external EEPROM in designs that require persistent analog settings.
What are the specifications of MCP4021-503E/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | NONVOLATILE MEMORY |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 64 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.45mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 50000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP4021-503E/MS datasheet?
MCP4021-503E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4021-503E/MS?
Compatible alternatives and drop-in replacements for MCP4021-503E/MS:
Frequently Asked Questions
How many resistance steps does the MCP4021-503E/MS provide, and what step size does that imply for a 50 kΩ pot?
The MCP4021-503E/MS offers 64 wiper positions across its 50 kΩ end-to-end resistance, giving an approximate step size of 781 Ω per increment. This resolution suits applications such as programmable gain stages and LCD contrast circuits where coarse 0.78 kΩ adjustments are acceptable. Finer resolution requires a 128-step or 256-step variant from the MCP4021 family.
How does the non-volatile memory in the MCP4021-503E/MS benefit battery-powered designs?
The MCP4021-503E/MS stores the current wiper position in on-chip EEPROM, so calibration or gain settings written during factory trim or field setup persist through power removal. Battery-powered sensors and handheld instruments benefit because the host microcontroller does not need to re-program the resistance at every power-up, saving startup time and reducing code complexity.
Can the MCP4021-503E/MS replace a mechanical trimmer potentiometer in a 3.3 V industrial calibration board?
Yes, the MCP4021-503E/MS operates from 2.7V to 5.5V, covering a 3.3V rail directly. Its 8-pin MSOP footprint and 50 kΩ resistance match common trimmer values used in op-amp offset and gain circuits. The digital increment/decrement interface replaces a screwdriver adjustment, enabling automated factory calibration sequences and remote re-trimming over the system's existing control bus.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0700 | $1.07 |
| 100+ | $0.8100 | $81.00 |
| 1000+ | $0.7900 | $790.00 |
| 5000+ | $0.6900 | $3450.00 |
| 7500+ | $0.6880 | $5160.00 |
| 10000+ | $0.6830 | $6830.00 |
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