MCP4351-104E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4351-104E/ST is a quad-channel 8-bit digital potentiometer with 257 wiper positions and a 100 kΩ end-to-end resistance, controlled via 3-wire SPI interface. It integrates four independent resistor networks in a single 20-pin TSSOP package, enabling compact digitally-controlled analog signal adjustment. Well-suited for gain control, offset calibration, and programmable filtering applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP4351-104E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.2100(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
- 4 independent digital potentiometer channels, each with 257 positions and 100 kΩ resistance
- SPI 3-wire serial control interface for simple MCU integration
- Non-volatile wiper position storage retaining settings through power cycles
- 0.1 kHz bandwidth supporting audio and DC control signal applications
- 20-pin TSSOP package integrating 4 potentiometer channels in compact footprint
- Pb-free and RoHS-compliant (JESD-609 Code e3)
Applications
MCP4351-104E/ST is used in analog gain control stages, programmable filter tuning, and sensor calibration circuits where multiple resistance channels must be adjusted digitally via SPI. It is also applied in audio processing equipment, precision instrumentation, and LCD bias voltage control where four independent 100 kΩ digital potentiometers in a single 20-pin package reduce board area and BOM complexity.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-20 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| 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 | GULL WING |
| Terminal Pitch | 0.65mm |
| 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 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Philippines, 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 MCP4351-104E/ST provide, and what is the full-scale resistance per channel?
MCP4351-104E/ST integrates 4 independent digital potentiometer channels, each offering 257 wiper positions across a 100 kΩ end-to-end resistance. This gives a step resolution of approximately 390 Ω per step per channel, which is sufficient for precision gain trimming, analog offset correction, and programmable voltage divider designs controlled over the SPI interface.
Does MCP4351-104E/ST retain wiper positions after power is removed, and how does this affect system initialization?
Yes, MCP4351-104E/ST includes non-volatile memory that stores the wiper position for each of its 4 channels across power cycles. On power-up, all channels restore to the last saved position without requiring an SPI write from the host MCU, simplifying firmware initialization in calibration instruments and audio gain blocks that must operate immediately at the correct resistance setting.
What bandwidth limitation should designers consider when using MCP4351-104E/ST in audio or AC signal paths?
MCP4351-104E/ST has a nominal bandwidth of 0.1 kHz (100 Hz), which is below the audio band. This means it is suitable for DC bias control, offset trimming, and low-frequency gain adjustment, but not for direct AC audio signal routing through the wiper. Designers using this 100 kΩ digital potentiometer in audio circuits should route the signal through a buffer amplifier and use the wiper only for DC gain-control feedback paths.
Is MCP4351-104E/ST available in a package suitable for automated SMT production, and what is the typical lead time?
MCP4351-104E/ST is supplied in a 20-pin TSSOP package (JESD-30 Code R-PDSO-G20), which is fully compatible with automated pick-and-place and reflow soldering. Its factory lead time of 7 weeks is typical for Microchip digital potentiometer ICs, and the part is RoHS-compliant (JESD-609 Code e3), making it a practical choice for environmentally certified volume production runs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8000 | $1.80 |
| 25+ | $1.7700 | $44.25 |
| 74+ | $1.5800 | $116.92 |
| 100+ | $1.3600 | $136.00 |
| 1000+ | $1.3000 | $1300.00 |
| 2516+ | $1.2100 | $3044.36 |
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