MCP4142-103E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4142-103E/SN is a single-channel SPI digital potentiometer with 128-step resolution and 10 kOhm end-to-end resistance operating at up to 1 kHz bandwidth. It supports increment/decrement control with non-volatile wiper storage in an 8-pin SOIC package. Available in stock from authorized distributors with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4142-103E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7700(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP4142-103E/SN?
- Single-channel 128-step digital potentiometer with 10 kOhm (103) end-to-end resistance for precise analog trimming
- Non-volatile EEPROM wiper position storage retaining settings across power cycles with 100,000 write-cycle endurance
- SPI increment/decrement interface operating at 1.8 V to 5.5 V for compatibility with 3.3 V and 5 V microcontrollers
- Compact 8-pin SOIC package suitable for space-constrained calibration and gain-control circuits
What is MCP4142-103E/SN used for?
The MCP4142-103E/SN is used for programmable gain adjustment in op-amp circuits, DC bias trimming in sensor conditioning stages, and contrast control in LCD drivers where a single adjustable 10 kOhm resistor element is required. Its non-volatile wiper memory makes it ideal for factory calibration of measurement instruments that must retain calibration across power cycles. The SOIC-8 package is straightforward to hand-solder or machine-place on standard PCB assemblies for industrial and consumer electronics.
What are the specifications of MCP4142-103E/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| 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 |
| Supply Current-Max | 1mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 10000Ω |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mainland China, Thailand |
Where can I find the MCP4142-103E/SN datasheet?
MCP4142-103E/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4142-103E/SN?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does the MCP4142-103E/SN offer and what resistance per step does that provide?
The MCP4142-103E/SN provides 128 discrete wiper positions across a 10 kOhm end-to-end resistance, yielding approximately 78.1 Ohm per step. The wiper contact resistance is typically 75 Ohm and must be included in circuit calculations. This resolution is appropriate for coarse gain trimming and analog bias adjustment in sensor front-end circuits.
How does the MCP4142-103E/SN retain its wiper position after the system powers down?
The MCP4142-103E/SN stores the current wiper position in on-chip EEPROM, retaining it without battery backup when power is removed. Non-volatile memory supports at least 100,000 write cycles and offers data retention beyond 40 years. This feature eliminates re-calibration on power-up in instruments such as portable meters and field-calibrated transmitters.
What supply voltages does the MCP4142-103E/SN accept and how does this affect its use in mixed-voltage systems?
The MCP4142-103E/SN operates from a single supply of 1.8 V to 5.5 V, making it compatible with both 3.3 V low-power microcontrollers and legacy 5 V systems. The SPI interface logic levels track the supply, so no level translation is needed when the digital potentiometer shares the same supply rail as the controlling MCU. This simplifies BOM and PCB routing in mixed-signal designs.
When would a designer choose the MCP4142-103E/SN over the MCP4162 dual-channel variant?
A designer would select the single-channel MCP4142-103E/SN when only one independently adjustable resistance element is required, saving the cost and SOIC-8 footprint (versus the 10-pin MSOP of the MCP4162). The 10 kOhm resistance is suitable for voltage divider and gain networks in the sub-100 kHz frequency range given the 1 kHz bandwidth specification. If two channels are needed on one SPI bus, the MCP4262-502E/UN dual-channel device with 5 kOhm resistance is the natural upgrade path.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0700 | $1.07 |
| 100+ | $0.8100 | $81.00 |
| 1000+ | $0.7900 | $790.00 |
| 5000+ | $0.7700 | $3850.00 |
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