MCP4131-502E/SN Microchip Integrated Circuit (Other) In Stock
Microchip MCP4131-502E/SN is a single-channel 5 kΩ digital potentiometer with SPI increment/decrement interface, 128 wiper positions, and 2 kHz bandwidth, housed in an SOIC-8 package for programmable resistance applications in electronic systems.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4131-502E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5660(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
- Single-channel 5 kΩ end-to-end resistance with 128 wiper positions for fine-grained analog adjustment
- SPI increment/decrement control interface enables simple software-driven resistance tuning without complex commands
- 2 kHz signal bandwidth supports audio and low-frequency analog signal path adjustment applications
- SOIC-8 package with 3.90 mm body suits standard PCB assembly and hand-soldering processes
Applications
The MCP4131-502E/SN is used in programmable gain amplifiers, offset voltage trimming circuits, and digitally adjustable filter networks where mechanical potentiometers are undesirable. Its SPI interface allows microcontrollers to dynamically set resistance in audio volume controls, calibration circuits, and sensor signal conditioning stages. The device is also suitable for LCD contrast adjustment and programmable biasing in battery-operated portable instruments where precise, repeatable analog control is required.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| 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 |
| 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 | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 5000Ω |
| Package | Other |
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 | Mainland China, Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does the MCP4131-502E/SN provide and what is the resulting resistance step size?
The MCP4131-502E/SN offers 128 wiper positions across a 5 kΩ end-to-end resistance, giving a nominal step size of approximately 39 Ω per increment. This resolution is sufficient for fine-grained analog adjustments in gain control, volume setting, and calibration applications without requiring high-resolution DACs.
Which microcontroller interface does the MCP4131-502E/SN use, and how is wiper position updated?
The MCP4131-502E/SN uses an SPI-compatible increment/decrement control interface operating at standard SPI clock rates. The wiper position is updated by sending increment or decrement commands over the SPI bus, allowing any microcontroller with a 3-wire or 4-wire SPI peripheral to control the resistance value in real time with minimal firmware overhead.
What signal bandwidth does the MCP4131 support, and for which frequency applications is it appropriate?
The MCP4131-502E/SN has a nominal bandwidth of 2 kHz, making it suitable for audio frequency range applications such as volume control, tone adjustment, and low-frequency filter tuning. For higher-frequency analog signal paths above 10 kHz, designers should consider higher-bandwidth digital potentiometer alternatives from the MCP4 family.
How does the MCP4131-502E/SN compare to a mechanically adjustable trimmer potentiometer in a production design?
Unlike a mechanical trimmer that requires physical access for adjustment and can drift due to vibration or oxidation, the MCP4131-502E/SN allows software-controlled resistance trimming at any point in the product lifecycle. This enables factory calibration, in-system compensation for component aging, and remote adjustment over a communication bus, reducing service costs for deployed equipment. Its 5 kΩ resistance and SOIC-8 package allow direct substitution on many existing trimmer footprints with a simple firmware update.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8400 | $0.84 |
| 25+ | $0.7000 | $17.50 |
| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.6100 | $610.00 |
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| 10000+ | $0.5660 | $5660.00 |
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