MCP4231-104E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
The MCP4231-104E/P is a dual-channel 100 kΩ digital potentiometer from Microchip with 129 positions and SPI increment/decrement control. It operates from a single supply and provides a 0.1 kHz nominal bandwidth in an 8-pin PDIP package. Suitable for programmable gain amplifiers, calibration circuits, and adjustable filter applications in embedded systems.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4231-104E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2161(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
- Dual-channel 100 kΩ digital potentiometer with 129 linear resistance positions per channel
- SPI increment/decrement control interface for simple, reliable wiper position updates
- 0.1 kHz nominal bandwidth supporting audio and low-frequency signal conditioning applications
- Pb-free RoHS-compliant construction (JESD-609 Code e3) for compliant product manufacturing
- 8-pin PDIP package for easy breadboard prototyping and through-hole PCB assembly
Applications
The MCP4231-104E/P is used in programmable gain amplifier circuits, DC bias adjustment, and analog calibration systems where a microcontroller must digitally tune resistance without mechanical potentiometers. Its dual-channel architecture makes it well-suited for stereo audio attenuation, differential signal level matching, and multi-axis sensor offset correction in instrumentation and consumer electronics.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDIP-T14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.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 | 100000Ω |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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 discrete resistance steps does MCP4231-104E/P provide, and what step size does that yield across its 100 kΩ range?
The MCP4231-104E/P offers 129 wiper positions across its 100 kΩ end-to-end resistance, yielding a step resolution of approximately 781 Ω per increment. This granularity is sufficient for programmable gain stages, DC offset trimmers, and filter cutoff adjustments in mixed-signal circuits where coarse-to-fine tuning via an SPI interface replaces mechanical trimmer potentiometers.
Why does the 0.1 kHz bandwidth of MCP4231-104E/P limit its use, and in which frequency ranges is it still effective?
The nominal 0.1 kHz (100 Hz) bandwidth means the MCP4231-104E/P is optimized for DC and very low frequency applications such as bias voltage adjustment, DC gain control, and slow calibration loops. It is not suitable as an audio volume control above a few hundred hertz, but works well in sensor conditioning, temperature compensation circuits, and slow closed-loop control systems operating below 50 Hz.
Can both channels of MCP4231-104E/P be updated independently over SPI, or must they be set simultaneously?
The MCP4231-104E/P provides 2 independent wiper registers addressable over the SPI interface, allowing each 100 kΩ channel to be updated separately with its own 129-position value. This enables asymmetric gain or attenuation settings in dual-channel designs, such as a stereo audio circuit where the left and right channel levels must be adjusted independently from the same 8-pin PDIP package.
What lead time and packaging format does the MCP4231-104E/P ship in, and is there a tape-and-reel SMT alternative for production volume?
The MCP4231-104E/P ships in a 14-pin PDIP through-hole package with approximately 7 weeks factory lead time. For high-volume SMT production, Microchip offers functionally equivalent SPI digital potentiometer variants in SOIC and TSSOP packages under the MCP4231 family that are compatible with automated pick-and-place reflow assembly and standard 100 kΩ resistance values.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.2161 | $0.22 |
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