MCP4551T-502E/MS Microchip Variable Resistor (Small Outline Packages) In Stock
The MCP4551T-502E/MS is a single-channel 8-bit digital potentiometer with a 5 kOhm end-to-end resistance, controlled via a 2-wire I2C interface, housed in an MSOP-8 package. From $0.90 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4551T-502E/MS Datasheet PDF
- Category
- Variable Resistor
- Price
- From $0.7400(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
- Single-channel 8-bit resolution digital potentiometer with 5 kOhm total resistance for fine-grained analog adjustment
- I2C 2-wire serial interface with address selection allowing up to 8 devices on a single bus without additional circuitry
- Volatile wiper position with non-volatile memory option and MSOP-8 footprint for compact PCB integration
Applications
The MCP4551T-502E/MS is used in applications requiring software-controlled analog adjustment such as programmable gain amplifiers, LCD bias voltage tuning, and audio volume control. Its I2C interface simplifies integration with microcontrollers like PIC and AVR in consumer electronics, industrial calibration equipment, and medical instruments. The compact MSOP-8 form factor and single 5 kOhm resistor ladder make it an efficient replacement for mechanical trimmer potentiometers in production-calibrated designs.
Specifications
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 1Week |
| 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 |
| 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 MCP4551T-502E/MS:
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Frequently Asked Questions
What end-to-end resistance value does MCP4551T-502E/MS provide, and how many steps does the wiper traverse?
The MCP4551T-502E/MS has a 5 kOhm end-to-end resistance and an 8-bit wiper with 256 steps, giving a step resolution of approximately 19.6 Ohm per LSB. This fine resolution is sufficient for precision analog trimming in gain stages or reference voltage dividers operating from 2.7 V to 5.5 V.
How many MCP4551T-502E/MS devices can share a single I2C bus in a multi-channel design?
Up to 8 MCP4551T-502E/MS devices can coexist on a single 2-wire I2C bus by selecting different 3-bit hardware addresses, enabling 8 independent 5 kOhm potentiometer channels to be controlled from one master MCU without additional bus components.
Can MCP4551T-502E/MS retain its wiper setting after power cycling?
The standard MCP4551T-502E/MS stores the wiper position in volatile RAM that resets to mid-scale (128 out of 256 steps) on power-up. For applications requiring power-off retention, Microchip also offers the MCP4551 with EEPROM non-volatile memory to preserve the last programmed resistance value across 1 million write cycles.
Which gain-control circuits benefit most from replacing a mechanical trimmer with MCP4551T-502E/MS?
Operational amplifier feedback networks and instrumentation amplifier gain resistors benefit most from this replacement, since the 8-bit 5 kOhm ladder allows remote, software-driven gain adjustment over a 2-wire bus without physical access. This is especially useful in sealed industrial sensors calibrated after final assembly at -40°C to +125°C operating temperature.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0200 | $1.02 |
| 25+ | $0.8570 | $21.43 |
| 100+ | $0.7800 | $78.00 |
| 1000+ | $0.7500 | $750.00 |
| 5000+ | $0.7400 | $3700.00 |
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