MCP42100-I/SL Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP42100-I/SL is a dual-channel 100 kΩ digital potentiometer with 256 wiper positions per channel, controlled via a 3-wire SPI-compatible serial interface in a 14-pin SOIC package. Each channel provides precise electronically adjustable resistance for gain, bias, and calibration control. Designed for programmable analog front ends, audio volume control, and sensor calibration systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP42100-I/SL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.0500(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 MCP42100-I/SL?
- Dual independent 100 kΩ potentiometer channels with 256 wiper steps each
- 3-wire SPI-compatible serial interface for easy microcontroller integration
- 14-pin SOIC package (SOIC-14) for compact PCB placement
- Non-volatile wiper position retention through power cycles
- Low-voltage compatible operation for 3.3 V and 5 V system integration
- Bandwidth of 0.145 kHz suitable for DC and low-frequency analog adjustment
What is MCP42100-I/SL used for?
The MCP42100-I/SL is commonly used in programmable gain amplifier stages, digitally controlled voltage dividers, and calibration circuits in industrial sensors and test equipment. Its dual-channel architecture enables simultaneous adjustment of two independent analog parameters such as offset and gain in a signal conditioning chain with a single SPI transaction. The device also finds use in audio volume control, LCD contrast adjustment, and adaptive filter coefficient tuning in embedded systems.
What are the specifications of MCP42100-I/SL?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-14 |
| Factory Lead Time | 8Weeks |
| YTEOL | 8 |
| Bandwidth-Nom | 0.145kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Number of Positions | 256 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.24 |
| 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 100000Ω |
| 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 MCP42100-I/SL datasheet?
MCP42100-I/SL Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP42100-I/SL?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps does each channel of the MCP42100-I/SL provide, and what is the end-to-end resistance value?
Each of the two channels in the MCP42100-I/SL offers 256 discrete wiper positions with an end-to-end resistance of 100 kΩ, giving a step resolution of approximately 390 Ω per step. This fine resolution allows precise analog parameter adjustment in gain control, offset trimming, and voltage divider applications. The 256-step range corresponds to an 8-bit control word sent via the 3-wire SPI interface.
Can both potentiometer channels of the MCP42100-I/SL be controlled independently, and does setting one affect the other?
Yes, the MCP42100-I/SL provides two fully independent 100 kΩ potentiometer channels that can be addressed and programmed separately through the SPI command byte. The chip-select and command byte protocol allows writing to channel 1, channel 2, or both channels simultaneously without cross-channel interaction, enabling independent gain and offset adjustment in dual-channel signal conditioning circuits or stereo audio volume control applications.
What supply voltage range does the MCP42100-I/SL require, and does it interface directly with 3.3 V microcontrollers?
The MCP42100-I/SL operates from a supply voltage range of 2.7 V to 5.5 V, which is directly compatible with both 3.3 V and 5 V microcontroller SPI buses without requiring level shifting. The 100 kΩ end-to-end resistance and 256-step resolution remain consistent across this supply range, ensuring predictable analog performance in mixed-voltage systems common in modern embedded designs.
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