MCP4142-104E/P Microchip Integrated Circuit (Dual-In-Line Packages) In Stock
Microchip MCP4142-104E/P is a single-channel 7-bit digital potentiometer with 100 kΩ end-to-end resistance and an SPI-compatible increment/decrement interface. It provides 128 resistance steps in an 8-pin PDIP package, suitable for gain control, offset adjustment, and programmable biasing in analog signal conditioning circuits.
- Manufacturer
- Microchip
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4142-104E/P Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7620(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
- 100 kΩ (104) resistance value with 128 wiper positions gives fine 781Ω per step adjustment resolution
- SPI-compatible increment/decrement interface allows direct MCU control without additional hardware
- Non-volatile wiper position memory retains the last set resistance across power cycles
- 8-pin PDIP package enables easy prototyping and through-hole assembly on development boards
Applications
The MCP4142-104E/P is used in analog signal conditioning circuits that require software-controlled gain or offset trimming without manual potentiometer adjustment. It suits programmable filter cutoff adjustment, LCD contrast control, and audio volume control applications where an MCU adjusts resistance via SPI commands. Its non-volatile memory makes it well suited for calibration storage in sensor interface modules and industrial measurement systems.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | PDIP-8 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| 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 | NO |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 100000Ω |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps and what end-to-end resistance does the MCP4142-104E/P provide?
The MCP4142-104E/P offers 128 wiper positions across a 100 kΩ end-to-end resistance, yielding approximately 781 Ω per step. This resolution is adequate for gain trimming in audio amplifiers, LCD bias adjustment, and programmable voltage divider networks where coarse digital control is sufficient to replace a manual trimpot.
Does the MCP4142-104E/P retain its wiper position after power is removed, and why does this matter?
Yes, the MCP4142-104E/P stores its wiper position in non-volatile memory and restores the same resistance setting on power-up without MCU intervention. This feature is critical in calibration applications where a trimmed offset must remain valid across hundreds of power cycles, avoiding re-calibration routines that would add firmware complexity and startup latency of several milliseconds.
Which SPI interface parameters must an MCU meet to control the MCP4142-104E/P reliably?
The MCP4142-104E/P uses a standard SPI interface with a clock speed up to 10 MHz and operates from 1.8V to 5.5V supply voltage, making it compatible with 3.3V and 5V MCU platforms including PIC, AVR, and ARM Cortex-M devices. The increment/decrement command structure requires only 2-byte transfers, minimizing firmware overhead for real-time resistance adjustment.
What are the trade-offs when using the 8-pin PDIP MCP4142-104E/P versus an SOIC or TSSOP packaged digital potentiometer?
The 8-pin PDIP package of the MCP4142-104E/P occupies approximately 100 mm² of board area, roughly 4 times larger than an equivalent SOIC-8 device, but it allows direct insertion into breadboards and DIP sockets for fast prototyping. For production PCBs requiring high component density, the MCP4142-103E/SN SOIC variant delivers identical 100 kΩ performance in a footprint under 30 mm².
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1600 | $1.16 |
| 100+ | $0.8700 | $87.00 |
| 1000+ | $0.8400 | $840.00 |
| 5000+ | $0.8300 | $4150.00 |
| 5040+ | $0.7640 | $3850.56 |
| 7500+ | $0.7620 | $5715.00 |
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