MCP4631-502E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4631-502E/ST is a dual 7-bit I2C digital potentiometer with a 5 kΩ resistor array, 2 kHz bandwidth, and volatile wiper memory, packaged in a 14-pin TSSOP for programmable resistance control. From $0.90 in stock worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4631-502E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8000(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP4631-502E/ST?
- Dual 7-bit digital potentiometer with 5 kΩ end-to-end resistance and 128 wiper positions, enabling precise software-controlled voltage division and gain adjustment
- I2C 2-wire serial interface requiring only 2 microcontroller pins for dual-channel resistance programming at up to 400 kHz bus speed
- 14-pin TSSOP package with 2 kHz bandwidth supporting audio volume control, sensor calibration, and analog signal conditioning in space-efficient PCB layouts
What is MCP4631-502E/ST used for?
The MCP4631-502E/ST is used in audio equipment for software-controlled volume and tone adjustment, replacing mechanical potentiometers with digitally programmable 5 kΩ resistance in 128 steps. It is also applied in precision analog calibration circuits, programmable gain amplifiers, and sensor offset trimming where resistance must be adjusted under microcontroller control via I2C without manual intervention. The dual-channel configuration allows independent adjustment of two signal paths within a single 14-pin TSSOP device.
What are the specifications of MCP4631-502E/ST?
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| 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 | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.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 | 0.6mA |
| 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 | Philippines, Thailand |
Where can I find the MCP4631-502E/ST datasheet?
MCP4631-502E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4631-502E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps does the MCP4631-502E/ST provide, and what is the step resolution at 5 kΩ?
The MCP4631-502E/ST provides 128 wiper positions (7-bit resolution) across a 5 kΩ end-to-end resistance. Each step corresponds to approximately 39 Ω (5000 Ω ÷ 128), allowing fine-grained resistance adjustment for applications such as programmable gain amplifiers, sensor calibration offsets, and audio volume control where consistent incremental control is required.
What communication interface does the MCP4631-502E/ST use, and how does it simplify multi-device designs?
The MCP4631-502E/ST uses an I2C 2-wire serial interface operating up to 400 kHz. Multiple MCP4631 devices can share a single I2C bus using distinct address pins, allowing a microcontroller to control several dual-potentiometer channels with only 2 GPIO lines. This reduces wiring complexity compared to SPI alternatives that require dedicated chip-select lines for each device.
Is the MCP4631-502E/ST suitable for replacing a mechanical potentiometer in a precision analog calibration circuit?
Yes, the MCP4631-502E/ST replaces a mechanical potentiometer with a software-programmable 5 kΩ resistor that can be set to any of 128 positions via I2C commands. Unlike mechanical potentiometers, the digital version eliminates contact wear, vibration sensitivity, and manual calibration steps, enabling automated factory calibration and in-field recalibration of sensor offsets or amplifier gain settings through a 14-pin TSSOP footprint.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.1000 | $1.10 |
| 96+ | $1.0700 | $102.72 |
| 100+ | $0.8900 | $89.00 |
| 1000+ | $0.8700 | $870.00 |
| 5000+ | $0.8500 | $4250.00 |
| 5088+ | $0.8000 | $4070.40 |
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