MCP4351-103E/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip MCP4351-103E/ML is a quad-channel non-volatile digital potentiometer with 10 kΩ end-to-end resistance and 257 wiper positions per channel. It communicates over 3-wire SPI and operates from 1.8 V to 5.5 V, housed in a compact 20-pin QFN package. Ideal for precise programmable gain, offset trimming, and calibration circuits.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP4351-103E/ML Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2900(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
- Quad-channel digital potentiometer with 257 linear wiper positions per channel
- 10 kΩ nominal end-to-end resistance with non-volatile wiper position storage
- 3-wire SPI interface operating at 1.8 V to 5.5 V supply
- 1 kHz bandwidth for dynamic audio and signal control applications
- Compact 20-pin QFN package enabling dense PCB integration
Applications
The MCP4351-103E/ML is commonly used in programmable gain amplifier circuits, LCD contrast adjustment, and audio volume/balance control requiring four independent channels. Its non-volatile memory ensures wiper positions are retained after power cycling, making it reliable for factory calibration and field-adjustable sensor conditioning systems.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | QFN-20 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PQCC-N20 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC20,.16SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.45mA |
| Supply Voltage-Nom | 2.7V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 10000Ω |
| Package | Quad Flat No-Lead |
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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many independent resistance channels does MCP4351-103E/ML provide, and what is the end-to-end resistance value?
MCP4351-103E/ML provides 4 independent digital potentiometer channels, each with a 10 kΩ nominal end-to-end resistance and 257 wiper positions. This gives a step resolution of approximately 39 Ω per step, suitable for precise gain and offset trimming in analog signal chains.
Does MCP4351-103E/ML retain its wiper position after power loss, and how does this affect factory calibration workflows?
Yes, MCP4351-103E/ML uses non-volatile memory to store wiper positions across all 4 channels, so settings are retained after power cycling. This allows factory calibration values to be programmed once via SPI and remain intact throughout the product lifetime, eliminating the need for re-calibration on power-up.
What SPI interface does MCP4351-103E/ML use, and at what supply voltage does it operate?
The device uses a 3-wire SPI serial interface and operates across a 1.8 V to 5.5 V supply voltage range, making it compatible with both 3.3 V and 5 V microcontroller systems. Clock frequency up to 10 MHz is supported, enabling fast wiper updates in dynamic control loops.
How does the QFN-20 package of MCP4351-103E/ML compare to PDIP alternatives for space-constrained designs?
The 20-pin QFN package has a 4 mm × 4 mm body footprint, significantly smaller than a PDIP-20 which spans roughly 25.4 mm in length. This size reduction makes MCP4351-103E/ML well-suited for compact industrial modules and wearable devices where board real estate is limited to under 20 mm².
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