MCP42100-E/SL Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP42100-E/SL is a dual-channel 100 kΩ digital potentiometer from Microchip with 256-position 8-bit resolution and 3-wire SPI control in an SOIC-14 package. From $1.50 in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP42100-E/SL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.2100(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 256 positions per channel provides 8-bit wiper resolution for precise programmable resistance
- 3-wire SPI interface at up to 10 MHz allows fast microcontroller-driven resistance updates in real-time tuning applications
- SOIC-14 package integrates 2 independent potentiometer channels in a single IC, replacing 2 mechanical pots while adding digital control
Applications
MCP42100-E/SL is used in applications requiring programmable analog signal conditioning, such as gain adjustment in audio amplifiers, calibration offset control in sensor front-ends, and LCD contrast tuning in embedded displays. Its dual-channel SPI-controlled architecture lets a microcontroller set two independent resistance values simultaneously, making it effective in stereo audio volume controls and two-axis joystick trim circuits. The part also fits digitally adjustable voltage reference and filter tuning circuits in test and measurement equipment.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 10 |
| 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 | AUTOMOTIVE |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP42100-E/SL:
Digital Potentiometer, 2 Func, 100000ohm, 3-wire Serial Control Interface, 256 Positions, CMOS, PDSO14
Frequently Asked Questions
What resistance resolution does MCP42100-E/SL deliver with its 256-position wiper, and how fine is each step?
MCP42100-E/SL has a 256-step (8-bit) wiper over a 100 kΩ end-to-end resistance, producing step sizes of approximately 391 Ω per LSB. This granularity is suitable for audio gain trimming and sensor offset calibration where sub-1% resistance increments are acceptable, though finer 10-bit resolution parts should be considered for precision analog applications requiring tighter voltage divider accuracy.
How does SPI control speed affect real-time resistance updates in MCP42100-E/SL gain-control circuits?
MCP42100-E/SL accepts SPI clock rates up to 10 MHz, allowing a full 16-bit command word to be clocked in under 2 µs. This means a microcontroller can update both wiper positions in under 4 µs, fast enough for audio volume ramping or PID gain scheduling at rates well above 100 kHz update loops. The 3-wire SPI bus (SCK, SDI, CS) requires only 3 MCU I/O pins.
In what scenario is MCP42100-E/SL a practical replacement for two mechanical trimpots in a production calibration fixture?
MCP42100-E/SL replaces 2 mechanical trimpots when factory calibration must be automated and stored digitally. A microcontroller writes specific 8-bit wiper codes via SPI to each of the 2 channels at the end of production test, eliminating manual trimming labor and achieving repeatable resistance settings within ±2 Ω. The SOIC-14 package occupies less than 50 mm² and eliminates the mechanical wear risk of physical trimpots over a product's lifetime.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $3.0700 | $3.07 |
| 100+ | $2.3400 | $234.00 |
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| 5000+ | $2.2100 | $11050.00 |
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