MCP4131-503E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip MCP4131-503E/P is a single-channel 50 kΩ SPI digital potentiometer with 128 wiper positions in an 8-pin DIP package. Operates from 1.8 V to 5.5 V supply with increment/decrement interface for precise resistance control. Suitable for audio, instrumentation, and calibration applications worldwide.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4131-503E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5770(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 50 kΩ digital potentiometer with 128 wiper positions for fine-grained resistance control
- SPI-compatible increment/decrement interface with up to 0.2 kHz bandwidth for embedded system integration
- Wide supply voltage range: 1.8 V to 5.5 V, compatible with 3.3 V and 5 V microcontroller systems
- 8-pin PDIP package for breadboard prototyping and through-hole PCB assembly
Applications
The MCP4131-503E/P is used in audio volume control circuits, sensor signal conditioning, and programmable gain amplifier configurations where software-controlled resistance adjustment is required. It suits calibration and trim circuits in instrumentation equipment, replacing mechanical potentiometers with a digitally controlled 50 kΩ element. The SPI interface enables seamless integration with PIC, AVR, and ARM microcontrollers in consumer and industrial electronic designs.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| 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 | NO |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 50000Ω |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
| 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 MCP4131-503E/P provide, and what is the step resolution for a 50 kΩ pot?
The MCP4131-503E/P provides 128 wiper positions across a 50 kΩ end-to-end resistance, giving a step resolution of approximately 390 Ω per step. This fine resolution allows precise analog signal adjustment in audio volume controls, programmable gain amplifiers, and calibration circuits where mechanical pots are impractical.
What supply voltage range does MCP4131-503E/P support, and can it interface directly with 3.3 V microcontrollers?
The MCP4131-503E/P operates from 1.8 V to 5.5 V supply voltage, enabling direct interfacing with both 3.3 V and 5 V microcontroller I/O without level translation. The SPI increment/decrement interface runs at the same voltage as VDD, making it compatible with modern low-power MCU designs.
In what applications is MCP4131-503E/P commonly used as a replacement for mechanical potentiometers?
MCP4131-503E/P replaces mechanical potentiometers in applications requiring remote or software-controlled resistance adjustment, such as audio level control (0 to 50 kΩ range), brightness dimming, programmable filters, and sensor offset trimming. The 8-pin PDIP package makes it easy to retrofit existing through-hole board designs, avoiding mechanical wear and extending product lifetime.
What is the control interface type of MCP4131-503E/P and how does it connect to an SPI bus?
MCP4131-503E/P uses an increment/decrement SPI-compatible interface with CS, SCK, and SDI signals, operating at up to 10 MHz clock speed with VDD of 5 V. The device requires only 3 digital I/O lines from the host microcontroller, and the wiper position is updated one step per SPI transaction without requiring an address byte.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.9600 | $0.96 |
| 100+ | $0.7300 | $73.00 |
| 1000+ | $0.6900 | $690.00 |
| 5000+ | $0.6800 | $3400.00 |
| 5040+ | $0.5780 | $2913.12 |
| 7500+ | $0.5770 | $4327.50 |
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