MCP4551-502E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4551-502E/MS is a single-channel 5 kOhm digital potentiometer with 256 wiper steps, 2-wire I2C serial interface, and 2 kHz bandwidth in MSOP-8 package. Available in 5 kOhm, 10 kOhm, and 50 kOhm variants. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4551-502E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7400(MOQ 25)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 256-step resolution over 5 kOhm end-to-end resistance via 2-wire I2C serial interface for precise analog tuning
- 2 kHz nominal bandwidth supports audio and low-frequency signal processing in compact MSOP-8 8-pin package
- Multiple resistance array options (5 kOhm, 10 kOhm, 50 kOhm) across the MCP4551 family for flexible design reuse
Applications
The MCP4551-502E/MS provides digitally programmable resistance for sensor offset trimming, LCD contrast control, and programmable filter cutoff frequency adjustment via I2C. Its 256-step resolution over 5 kOhm allows fine-grained tuning at approximately 20 Ohm per step for precision analog circuits. The MSOP-8 package and I2C interface make it easy to integrate into compact microcontroller-based designs without dedicating SPI bus resources.
Specifications
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 9 |
| Additional Feature | THE RESISTOR ARRAY VALUES ARE 5000 OHM,10000 OHM, 50000 OHM |
| Bandwidth-Nom | 2kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| 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 | 0.6mA |
| Supply Voltage-Nom | 3V |
| 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 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP4551-502E/MS:
Microchip Technology Inc Single 8-bit, Volatile linear POT w/I2C
Frequently Asked Questions
How does the 256-step resolution of MCP4551-502E/MS over 5 kOhm affect precision in analog tuning applications?
With 256 steps over 5 kOhm, each step changes resistance by approximately 20 Ohm, providing fine-grained control for LCD contrast adjustment, sensor gain trimming, and programmable filter tuning at up to 2 kHz bandwidth. This resolution is double the 128 or 129-step alternatives, enabling tighter calibration tolerances in precision analog signal conditioning circuits.
Why would a designer choose the 2-wire I2C interface of MCP4551-502E/MS over an SPI-based digital potentiometer?
The 2-wire I2C interface of MCP4551-502E/MS requires only 2 signal lines (SDA and SCL) compared to 3 or more lines for SPI, reducing pin count on the MCU and simplifying board routing. Multiple MCP4551 devices can share the same I2C bus with different addresses, enabling multi-potentiometer designs without additional chip select lines in MSOP-8 compact layouts.
Which resistance value in the MCP4551 family — 5 kOhm, 10 kOhm, or 50 kOhm — is best suited for a programmable RC low-pass filter at audio frequencies?
For an RC low-pass filter targeting audio frequencies between 20 Hz and 20 kHz, the 5 kOhm variant (MCP4551-502E/MS) paired with capacitors in the nF range provides practical cutoff frequency coverage. A 5 kOhm resistance with a 10 nF capacitor gives a cutoff near 3 kHz, while 50 kOhm with the same capacitor drops to 300 Hz — the optimal choice depends on the filter bandwidth target and capacitor size constraints.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $1.0200 | $25.50 |
| 86+ | $0.8191 | $70.44 |
| 100+ | $0.7800 | $78.00 |
| 1000+ | $0.7500 | $750.00 |
| 5000+ | $0.7400 | $3700.00 |
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