MCP4021T-503E/MC Microchip Integrated Circuit (Small Outline No-lead) In Stock
MCP4021T-503E/MC is a single-channel 6-bit nonvolatile digital potentiometer from Microchip with 50 kOhm end-to-end resistance and Up/Down increment interface. Available in 8-pin DFN package with 64 wiper positions retained through power cycles.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4021T-503E/MC Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7200(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
- 50 kOhm end-to-end resistance with 64 wiper positions (6-bit) for precise analog adjustment
- Nonvolatile memory retains last wiper position through power cycles without external EEPROM
- Simple Up/Down increment/decrement control interface in a compact 8-pin DFN package
Applications
MCP4021T-503E/MC is used in audio equipment such as headphone amplifiers and speakers where the user-set volume level must be retained after power-off without a microcontroller holding the value. Industrial calibration systems use it to digitally adjust gain or offset of analog signal chains with 50 kOhm resistance across 64 steps. Its Up/Down interface makes it suitable for simple push-button-controlled tuning circuits in HVAC controllers and panel meters.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | DFN-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Additional Feature | NONVOLATILE MEMORY |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-N8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 64 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOLCC8,.12,20 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE |
| 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 | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 50000Ω |
| Package | Small Outline No-lead |
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 wiper positions does MCP4021T-503E/MC offer, and how precisely can it set the resistance?
MCP4021T-503E/MC provides 64 wiper positions (6-bit resolution) across a 50 kOhm end-to-end resistance, giving a step size of approximately 781 ohms per increment. This resolution is sufficient for audio volume control, bias adjustment, and gain trimming in analog signal chains where coarse-to-fine tuning over a 0 to 50 kOhm range is needed.
Does MCP4021T-503E/MC retain its wiper setting after power is removed, and how is that implemented?
MCP4021T-503E/MC includes nonvolatile memory that stores the current wiper position when power is removed, so the 50 kOhm potentiometer resumes at the same resistance on the next power-up without any initialization code. This is particularly useful in battery-powered devices with infrequent MCU interaction, eliminating the need for an external EEPROM to save calibration data.
What control interface does MCP4021T-503E/MC use, and how does it differ from SPI-based digital potentiometers?
MCP4021T-503E/MC uses a two-wire Up/Down increment and decrement interface rather than an SPI or I2C bus. Each pulse on the Up pin increases the wiper position by one step and each pulse on the Down pin decreases it, with a 0.2 kHz bandwidth allowing up to 200 steps per second — a simpler alternative when a full serial bus is unavailable or when push-button control is preferred.
For a compact PCB design, what is the footprint of MCP4021T-503E/MC and how does it compare to DIP packages?
MCP4021T-503E/MC is housed in an 8-pin DFN (Dual Flat No-lead) package measuring approximately 2 mm x 3 mm, which is roughly 80% smaller than an 8-pin DIP package. Its lead-free construction and small SMD footprint make it suitable for high-density boards where a traditional through-hole potentiometer occupying 10 mm x 10 mm is not practical.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0800 | $1.08 |
| 25+ | $0.9000 | $22.50 |
| 100+ | $0.8200 | $82.00 |
| 1000+ | $0.8000 | $800.00 |
| 2475+ | $0.7350 | $1819.13 |
| 3300+ | $0.7200 | $2376.00 |
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