MCP4131-103E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4131-103E/SN is a single-channel 10 kΩ digital potentiometer with 128 wiper positions, controlled via an SPI-compatible increment/decrement interface, in an 8-pin SOIC package. It enables digitally programmable resistance in audio, calibration, and analog signal-conditioning circuits.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4131-103E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6100(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 10 kΩ end-to-end resistance with 128 wiper steps
- SPI-compatible increment/decrement control interface
- 1 kHz nominal bandwidth for audio and low-frequency signal use
- Non-volatile wiper position option available in compatible variants
- 8-pin SOIC package for easy through-hole or SMT assembly
- Wide supply voltage range for 3V and 5V system compatibility
Applications
The MCP4131-103E/SN replaces mechanical potentiometers in digitally controlled gain stages, audio volume controls, and LCD contrast adjustment circuits, allowing a microcontroller to tune resistance over a 10 kΩ range without any moving parts. It is also used in sensor calibration networks and programmable filter circuits where precise resistance trimming improves measurement accuracy. Its compact 8-pin SOIC package and simple increment/decrement SPI interface make integration into existing analog designs straightforward.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| 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 | 10000Ω |
| 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 | Mainland China, 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 MCP4131-103E/SN offer, and how fine is each step?
The MCP4131-103E/SN provides 128 wiper positions across a 10 kΩ end-to-end resistance, giving each step a resolution of approximately 78 Ω. This granularity is sufficient for gain trimming, volume control, and calibration tasks in analog circuits where mechanical potentiometers are impractical or prone to wear.
Which communication protocol does the MCP4131-103E/SN use to adjust its wiper, and what microcontrollers can drive it?
The MCP4131-103E/SN uses an SPI-compatible increment/decrement interface, making it directly compatible with the hardware SPI peripherals found on virtually all modern 8-bit, 16-bit, and 32-bit microcontrollers including PIC, AVR, ARM Cortex-M, and STM32 families. Only a few GPIO lines are needed if the MCU lacks a hardware SPI port.
Is the MCP4131-103E/SN suitable for audio volume control, and what bandwidth limitation should designers consider?
The MCP4131-103E/SN has a nominal bandwidth of 1 kHz, which covers the full 20 Hz to 1 kHz audio spectrum but begins rolling off above that frequency. For standard audio volume control applications operating below 1 kHz this is adequate, but for high-fidelity 20 Hz to 20 kHz audio paths, designers should evaluate the MCP4131's bandwidth curve against signal requirements or consider a higher-bandwidth digital potentiometer.
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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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