MCP4631-104E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4631-104E/ST is a dual-channel 7-bit digital potentiometer from Microchip with 10 kOhm end-to-end resistance and I2C interface, housed in a 14-pin TSSOP package. It provides 128 wiper positions per channel with volatile memory for runtime resistance adjustment. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4631-104E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7980(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 MCP4631-104E/ST?
- Dual-channel 7-bit digital potentiometer with 128 wiper positions
- 10 kOhm (104) end-to-end resistance with I2C 2-wire control interface
- 2 kHz bandwidth for audio and signal-conditioning applications
- 14-pin TSSOP package for compact surface-mount designs
- Volatile memory stores wiper position during active operation
- Single-supply operation compatible with 3.3 V and 5 V systems
What is MCP4631-104E/ST used for?
The MCP4631-104E/ST is used in programmable gain amplifiers, LCD contrast controls, and audio volume adjustment circuits where software-controlled resistance trimming replaces mechanical potentiometers. Its I2C interface allows a microcontroller to adjust two independent 10 kOhm channels simultaneously, useful in dual-channel audio equalizers, sensor calibration, and adjustable bias networks. The 14-pin TSSOP package fits compactly in instrumentation, consumer electronics, and industrial control boards.
What are the specifications of MCP4631-104E/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 |
| 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 | Philippines, Thailand |
Where can I find the MCP4631-104E/ST datasheet?
MCP4631-104E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4631-104E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does each channel of the MCP4631-104E/ST offer and what resistance step size does that produce?
Each of the two channels in the MCP4631-104E/ST provides 128 wiper positions across a 10 kOhm end-to-end resistance, yielding a step resolution of approximately 78 Ohms per step. This fine-grained control supports precise gain and threshold adjustments in instrumentation amplifiers, sensor signal conditioners, and audio processing circuits with 2 kHz bandwidth.
How does the I2C interface of the MCP4631-104E/ST simplify integration into a multi-device microcontroller system?
The MCP4631-104E/ST uses a standard 2-wire I2C interface operating at up to 400 kHz Fast-mode, allowing the device to share the same SDA/SCL bus with other I2C peripherals such as temperature sensors, EEPROMs, and real-time clocks. Up to four MCP4631 devices can coexist on one bus using hardware address pins, controlling 8 independent 10 kOhm channels from a single microcontroller.
When should a designer choose the 10 kOhm MCP4631-104E/ST over the 100 kOhm variant for a low-noise amplifier bias circuit?
A 10 kOhm end-to-end resistance as in the MCP4631-104E/ST generates lower Johnson noise (approximately 13 nV/√Hz at 25°C) compared to a 100 kOhm variant at 40 nV/√Hz. For low-noise amplifier bias networks where thermal noise must stay below 20 nV/√Hz, the 104 variant provides the right balance between noise floor, current consumption, and 128-step wiper resolution within the 2 kHz bandwidth.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2000 | $1.20 |
| 100+ | $0.8900 | $89.00 |
| 1000+ | $0.8700 | $870.00 |
| 5000+ | $0.8500 | $4250.00 |
| 5088+ | $0.8000 | $4070.40 |
| 7584+ | $0.7980 | $6052.03 |
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