MCP4231T-503E/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
The MCP4231T-503E/ML is a dual-channel 50 kΩ digital potentiometer with 129 taps and SPI increment/decrement control, housed in a compact 16-pin QFN (4×4 mm) package. It supports 0.2 kHz bandwidth for precision resistive adjustment. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- MCP4231T-503E/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8070(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel 50 kΩ digital potentiometer with 129-tap resolution for fine adjustment
- SPI increment/decrement interface enables precise software-controlled resistance setting
- Compact 16-pin QFN (4×4 mm) package minimizes PCB footprint
- RoHS-compliant e3 moisture-sensitivity rating for lead-free assembly
Applications
The MCP4231T-503E/ML is used in analog signal conditioning circuits requiring software-adjustable gain, offset, and filtering parameters over an SPI bus. Its dual-channel configuration enables simultaneous control of 2 independent resistive elements, making it suitable for audio volume controls, LCD bias adjustment, and sensor calibration systems. It is also applied in industrial process control and test equipment where remote resistance trimming eliminates manual calibration steps.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | VQFN-16 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PQCC-N16 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC16,.16SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, 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 |
| Supply Current-Max | 1mA |
| 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 | 0.65mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 50000Ω |
| Package | Quad Flat 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 resistance steps does the MCP4231T-503E/ML provide, and what is its end-to-end resistance value?
The MCP4231T-503E/ML offers 129 taps (positions 0 to 128) across a 50 kΩ end-to-end resistance range, yielding a step resolution of approximately 390 Ω per tap. This fine resolution enables precise analog adjustments in applications such as LCD bias control, audio attenuation, and sensor offset trimming where coarse steps would introduce audible or measurement artifacts.
Which control interface does the MCP4231T-503E/ML use, and how is it integrated into an SPI system?
The MCP4231T-503E/ML uses a standard SPI interface with increment and decrement commands to adjust the wiper position digitally. It operates as an SPI slave on a 4-wire bus (SCK, SDI, SDO, CS), compatible with virtually any microcontroller SPI peripheral at 3.3 V or 5 V supply levels. A single byte command over SPI moves the wiper one step at up to the SPI clock rate, enabling fast dynamic adjustment.
What are the dimensions of the MCP4231T-503E/ML package, and how does it compare to SOIC alternatives?
The MCP4231T-503E/ML is housed in a 16-pin QFN package measuring 4×4 mm with an exposed thermal pad. Compared to an equivalent SOIC-16 package (approximately 10×6 mm), the QFN saves more than 75% of PCB area, making it the preferred choice for space-constrained portable and wearable designs where the 50 kΩ dual-channel function must fit in a minimal footprint.
How many independent potentiometer channels does the MCP4231T-503E/ML contain, and what topology is each channel?
The MCP4231T-503E/ML contains 2 independent resistor network channels, each configured as a full potentiometer (P-terminal, W-wiper, A-terminal) with a 50 kΩ total resistance and 129 wiper positions. The dual-channel architecture allows simultaneous control of 2 separate analog signals — for example, left and right audio channels — from a single IC, reducing BOM count and layout complexity.
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