MCP41100-I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP41100-I/SN is a single-channel 100 kΩ digital potentiometer from Microchip with 256 resistor taps controlled via a 3-wire SPI interface. It provides programmable resistance adjustment in an 8-pin SOIC package for gain control, offset trimming, and tunable filter designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP41100-I/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3659(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP41100-I/SN?
- Single-channel 100 kΩ digital potentiometer with 256 resistor tap positions for fine-grained control
- 3-wire SPI serial interface enabling microcontroller-controlled resistance adjustment without mechanical parts
- End-to-end resistance of 100 kΩ with nominal 145 Hz bandwidth for audio and analog signal paths
- Non-volatile wiper position retention options available in pin-compatible family variants
- 8-pin SOIC-8 package for compact SMT placement in analog control circuits
- Pb-free RoHS compliant with JESD-609 e3 lead-free code
What is MCP41100-I/SN used for?
The MCP41100-I/SN is used in programmable gain amplifiers, digitally adjustable voltage references, and calibration circuits where mechanical potentiometers must be replaced with a microcontroller-driven solution. It also finds application in audio volume control, LCD display contrast adjustment, and tunable RC filter networks in consumer electronics and industrial sensor conditioning equipment.
What are the specifications of MCP41100-I/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Bandwidth-Nom | 0.145kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 256 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| 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 |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.6mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 800ppm/°C |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 100000Ω |
| ## MCP41100-I/SN Alternates Showing results | Image |
| 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 | Thailand |
Where can I find the MCP41100-I/SN datasheet?
MCP41100-I/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP41100-I/SN?
Compatible alternatives and drop-in replacements for MCP41100-I/SN:
Digital Potentiometer, 1 Func, 100000ohm, 3-wire Serial Control Interface, 256 Positions, CMOS, PDSO8
suggested
suggested
suggested
suggested
Frequently Asked Questions
How many resistance steps does MCP41100-I/SN provide and what is the step resolution for a 100 kΩ end-to-end resistance?
MCP41100-I/SN provides 256 discrete wiper positions across its 100 kΩ end-to-end resistance, giving a nominal step size of approximately 391 Ω per step, which is sufficient for fine gain trimming and offset calibration in precision analog circuits.
What SPI clock speed and interface protocol does MCP41100-I/SN use for wiper position control?
MCP41100-I/SN uses a 3-wire SPI interface with CS, SCK, and SI lines; it accepts SPI clock frequencies up to 10 MHz, allowing a microcontroller to update the wiper position in a single 16-bit SPI transaction, which takes under 2 µs at maximum clock speed.
In which analog signal-conditioning designs is MCP41100-I/SN preferred over a fixed-value resistor network?
MCP41100-I/SN is chosen when resistance must be adjusted at runtime, such as in programmable gain amplifiers with 256 gain steps, digitally tunable low-pass filters with 100 kΩ adjustable pole frequency, and auto-calibration circuits where factory trimming is replaced by firmware-controlled compensation across temperature and aging.
Does MCP41100-I/SN retain its wiper position after power is removed?
The standard MCP41100 series uses volatile wiper storage, so the wiper resets to the mid-scale position (128 out of 256 steps) at power-up; for non-volatile wiper retention across power cycles, Microchip offers the MCP42100 dual-channel variant or the MCP4151 with EEPROM-based wiper memory.
What lead time and package options should buyers consider when sourcing MCP41100-I/SN for volume production?
Factory lead time for MCP41100-I/SN in the 8-pin SOIC-8 package is approximately 6 weeks; for volume production, buyers can also evaluate the MCP41100T tape-and-reel variant for automated SMT assembly, reducing per-unit handling cost while maintaining the same 100 kΩ, 256-step digital potentiometer specification.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8000 | $1.80 |
| 4+ | $1.4065 | $5.63 |
| 8+ | $1.3862 | $11.09 |
| 16+ | $1.3659 | $21.85 |
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