MCP4142-104E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4142-104E/SN is a single-channel 100 kΩ digital potentiometer with SPI increment/decrement control interface, 0.1 kHz bandwidth, and non-volatile wiper position storage in a RoHS-compliant 8-pin SOIC package. From $1.50 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4142-104E/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel 100 kΩ digital potentiometer with SPI-compatible increment/decrement interface, enabling software-controlled resistance adjustment without mechanical parts
- Non-volatile wiper position memory retains the last programmed resistance setting through power cycles, eliminating re-initialization code in embedded systems
- RoHS-compliant 8-pin SOIC-8 package with 3.90 mm body, providing easy PCB assembly and compatibility with standard wave and reflow soldering processes
Applications
The MCP4142-104E/SN is used in applications requiring digitally programmable gain control, bias voltage adjustment, and LCD display contrast control where a mechanical potentiometer is impractical. Its SPI increment/decrement interface simplifies integration with microcontrollers in industrial calibration equipment, audio processing boards, and sensor signal conditioning circuits. The non-volatile wiper storage makes it particularly suitable for set-and-forget applications like power supply trimming and offset compensation in battery-powered devices.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| 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 | 100000Ω |
| ## MCP4142-104E/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 | Mainland China, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP4142-104E/SN:
suggested
suggested
Frequently Asked Questions
How does the MCP4142-104E/SN's non-volatile memory benefit a power supply trimming application compared to a volatile digital potentiometer?
The MCP4142-104E/SN retains its wiper position in non-volatile memory through power cycles, so a power supply trimmed to the correct output voltage during factory calibration will power up at the same setting without requiring the host microcontroller to re-program it. This reduces firmware complexity, speeds up boot time, and ensures consistent output voltage from the first power-on, which is critical in industrial and medical power supply designs targeting tolerances of ±1% or better.
What is the resistance range and bandwidth of the MCP4142-104E/SN, and how does this limit its use in audio frequency applications?
The MCP4142-104E/SN provides a 100 kΩ end-to-end resistance with a -3 dB bandwidth of approximately 0.1 kHz, which restricts its use to DC and very low-frequency signal paths below 100 Hz. For audio frequency volume control applications requiring flat response up to 20 kHz, a device with a higher bandwidth such as 1 MHz or more is needed, making the MCP4142 better suited for slow control loops, bias adjustment, and DC trimming rather than audio signal paths.
How does the SPI increment/decrement interface of the MCP4142-104E/SN differ from a direct-address SPI digital potentiometer in firmware integration?
The increment/decrement interface of the MCP4142-104E/SN requires the firmware to track the current wiper position and issue step commands relative to the current value, rather than writing an absolute 8-bit position code directly. This approach reduces the SPI command payload to 2-byte transfers per step but means the host must maintain a software counter matching the hardware wiper position across 128 steps to implement accurate resistance targeting.
Can the MCP4142-104E/SN replace a mechanical trimmer potentiometer on an existing PCB layout?
The MCP4142-104E/SN in an 8-pin SOIC-8 package cannot directly replace a 3-pin through-hole trimmer in the same footprint, but it replaces the trimmer's function in new PCB designs by providing equivalent resistance control with 128 wiper steps across 100 kΩ and adding the advantage of remote digital adjustment via SPI. The SOIC-8 footprint with 3.90 mm body width is compatible with standard SMD assembly and occupies less board area than most multi-turn trimmers.
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