MCP4021-202E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4021-202E/MS is a single-channel 7-bit digital potentiometer with 2.1 kOhm end-to-end resistance, 64 wiper steps, and nonvolatile memory in an MSOP-8 package. Controlled via Up/Down interface. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4021-202E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7663(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7-bit nonvolatile digital potentiometer retains wiper position through power cycles without host software intervention, ideal for calibration and gain-trim circuits
- 2.1 kOhm end-to-end resistance with 64 wiper steps and 4 kHz bandwidth enables accurate audio, signal conditioning, and bias-adjustment applications
- Up/Down increment/decrement SPI-compatible interface reduces MCU pin count to 2 wires, simplifying firmware integration in cost-sensitive designs
Applications
The MCP4021-202E/MS is designed for gain trimming, offset calibration, and LCD contrast adjustment in consumer electronics and industrial equipment where a nonvolatile wiper position must survive power interruptions. Audio equipment designers use its 2.1 kOhm resistance and 64-step resolution to implement digitally controlled volume and tone circuits with low-distortion 4 kHz bandwidth. Battery-powered sensors and meters benefit from its compact MSOP-8 footprint and low quiescent current for always-on calibration storage.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | NONVOLATILE MEMORY |
| Bandwidth-Nom | 4kHz |
| 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 | 2100Ω |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps does the MCP4021-202E/MS provide, and what is the step size for the 2.1 kOhm version?
The MCP4021-202E/MS offers 64 wiper positions (7-bit resolution) across a 2.1 kOhm end-to-end resistance, giving a nominal step size of approximately 33 ohms per increment. This resolution is sufficient for precise gain and offset trimming in analog signal chains where coarser adjustment would cause visible calibration errors.
Does MCP4021-202E/MS retain its wiper setting after power is removed, and how is that useful in production calibration?
Yes, the MCP4021-202E/MS stores the current wiper position in nonvolatile EEPROM memory. After factory calibration, the device retains the programmed resistance value indefinitely through power cycles, eliminating the need for an external EEPROM or MCU-driven calibration routine at every power-up in production instruments.
What control interface does MCP4021-202E/MS use, and how many MCU I/O pins are required?
The MCP4021 uses a simple 2-wire Up/Down increment/decrement interface with a chip-select line, requiring only 2 or 3 MCU GPIO pins. This is more I/O-efficient than a full 3-wire SPI bus, making it suitable for pin-constrained 8-pin microcontrollers such as PIC10 or PIC12 devices.
For an audio volume control circuit, what bandwidth limitation should designers consider with MCP4021-202E/MS?
The MCP4021-202E/MS has a nominal bandwidth of 4 kHz, which covers the critical voice-frequency range of 300 Hz to 3.4 kHz and standard audio bands up to 4 kHz. For high-fidelity audio above 4 kHz, a higher-bandwidth digital potentiometer such as the MCP4131 (rated at 2.1 MHz) would be more appropriate.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
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| 4+ | $0.7890 | $3.16 |
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| 16+ | $0.7662 | $12.26 |
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