MCP4531-103E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4531-103E/MS is a single-channel 7-bit I2C digital potentiometer from Microchip with a 10 kΩ end-to-end resistance, 128 wiper positions, and 2 kHz bandwidth in an 8-pin MSOP package. It enables software-controlled analog adjustment for gain, offset, and bias tuning in embedded systems.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4531-103E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.6100(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
- 7-bit resolution with 128 wiper positions for fine analog control
- 10 kΩ end-to-end resistance (also available in 5 kΩ and 50 kΩ)
- I2C (2-wire serial) interface for simple microcontroller integration
- 2 kHz bandwidth supporting audio-frequency analog adjustment
- Single-channel design in compact 8-pin MSOP package
- Non-volatile or volatile wiper position options across MCP453x family
Applications
The MCP4531-103E/MS enables digitally programmable analog tuning in applications such as programmable gain amplifier stages, LCD contrast adjustment, sensor offset calibration, and audio volume control where manual trimmer potentiometers are replaced by software-controlled adjustment. Its I2C interface allows a microcontroller to set any of the 128 wiper positions over a 2-wire bus, simplifying closed-loop calibration routines. The compact 8-pin MSOP footprint suits space-constrained analog front-end modules in portable instruments and industrial sensor nodes.
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 MCP4531-103E/MS:
suggested
suggested
suggested
suggested
suggested
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Digital Potentiometer, 1 Func, 100000ohm, 2-wire Serial Control Interface, 257 Positions, CMOS, PDSO8
Frequently Asked Questions
How many resistance steps does MCP4531-103E/MS provide, and what is the step size for a 10 kΩ pot?
The MCP4531-103E/MS provides 128 wiper positions over a 10 kΩ end-to-end resistance, giving a step resolution of approximately 78 Ω per step. This fine granularity allows precise analog voltage or current adjustments in programmable gain amplifiers, bias circuits, and calibration loops controlled via the I2C interface.
What bandwidth does the MCP4531-103E/MS support, and is it suitable for audio signal paths?
The MCP4531-103E/MS has a nominal bandwidth of 2 kHz, which covers the audio frequency range up to 2000 Hz and supports voice-band signal processing applications. For higher bandwidth analog paths such as radio frequency or wideband instrumentation, a device with wider bandwidth would be needed, but 2 kHz is sufficient for most audio volume control and tone adjustment circuits.
Can MCP4531-103E/MS replace a mechanical trimmer potentiometer in a factory calibration workflow?
Yes, the MCP4531-103E/MS replaces mechanical trimmers by allowing a microcontroller to write calibration values over the I2C bus during automated test, then lock the 7-bit wiper position in firmware or in a companion non-volatile device. Compared to a manual 10 kΩ trimmer, this eliminates screwdriver adjustment steps, reduces calibration time, and enables in-field recalibration without opening the enclosure.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8000 | $0.80 |
| 25+ | $0.7000 | $17.50 |
| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.6100 | $610.00 |
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