MCP4531-502E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4531-502E/MS is a single-channel 7-bit digital potentiometer with a 5 kΩ end-to-end resistance and 128 wiper steps. Controlled via 2-wire I2C interface in a compact MSOP-8 package. Used for programmable gain, offset, and calibration adjustments in audio, sensor, and analog control circuits.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4531-502E/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
- Single-channel 7-bit resolution with 128 wiper positions
- 5 kΩ end-to-end resistance (also available in 10 kΩ and 50 kΩ)
- 2-wire I2C serial control interface
- 2 kHz nominal bandwidth for audio and signal-chain applications
- Non-volatile wiper position storage in MSOP-8 package
- Single-supply operation for low-power embedded designs
Applications
The MCP4531-502E/MS is used in audio signal-processing boards for digitally adjustable volume and tone controls, and in sensor conditioning circuits where programmable gain or offset trimming is required. Its I2C interface simplifies integration with microcontrollers in industrial calibration equipment, smart home devices, and medical wearables that need software-adjustable resistor networks. The 128-step resolution provides fine-grained control over analog parameters without mechanical trimmer pots.
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
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 128-step resolution of the MCP4531-502E/MS translate to resistance increments across the 5 kΩ range?
With 128 wiper positions spanning a 5 kΩ end-to-end resistance, each step represents approximately 39 Ω of incremental resistance change. This resolution is sufficient for audio volume controls, feedback-network trimming in op-amp circuits, and bias current adjustment in sensor interfaces where coarse calibration tolerances of ±1% are acceptable.
Which I2C address options does the MCP4531-502E/MS support, and how does that affect multi-device bus configurations?
The MCP4531 uses a hardware-fixed I2C address with A0 pin strapping, supporting up to 2 devices on the same 2-wire bus in the standard configuration. When more than 2 digital potentiometers are required on a single I2C bus, designers typically select the dual-channel MCP4532 or address-extended variants, each occupying one of the available 7-bit addresses and consuming only microamps of standby current.
For a PCB with tight space constraints, how does the MSOP-8 footprint of the MCP4531-502E/MS compare to a traditional mechanical trimmer?
The MSOP-8 package occupies roughly 3 mm × 3 mm of board area, significantly smaller than a standard 6.35 mm × 6.35 mm Bourns 3386 trimmer pot, while eliminating mechanical wear-out over millions of adjustment cycles. The 2 kHz bandwidth is adequate for most DC and low-frequency analog signal-chain applications, and the device draws less than 1 mA of supply current during active I2C writes.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8400 | $0.84 |
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| 100+ | $0.6400 | $64.00 |
| 1000+ | $0.6100 | $610.00 |
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