MCP4651-104E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4651-104E/ST is a dual-channel 256-step digital potentiometer from Microchip with 100 kΩ resistance, I2C 2-wire serial interface, and non-volatile wiper position memory. Housed in a 14-pin TSSOP package for compact digitally-controlled gain and offset adjustment. From $1.50 in stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4651-104E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8370(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
- Dual-channel 256-step resolution over 100 kΩ end-to-end resistance, enabling fine-grained digitally programmable gain and attenuation control
- I2C 2-wire serial interface with non-volatile memory stores wiper position across power cycles, eliminating recalibration on startup
- 14-pin TSSOP package integrates two independent potentiometer channels, replacing 2 mechanical trimmer pots with a single compact IC
Applications
The MCP4651-104E/ST is used in precision analog circuit calibration where gain, offset, and bias levels must be software-controlled and retained across power cycles without user intervention. Its dual-channel design makes it ideal for stereo audio volume control, dual-axis sensor bias adjustment, and differential signal conditioning in test instrumentation. The I2C interface allows a single microcontroller to address multiple MCP4651 devices on the same bus using different hardware address pins, simplifying multi-channel calibration systems.
Specifications
| 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 |
| ## MCP4651-104E/ST Alternates Showing results | Image |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP4651-104E/ST:
suggested
suggested
Frequently Asked Questions
How many resistance steps does the MCP4651-104E/ST provide and what is the minimum step size over its 100 kΩ range?
The MCP4651-104E/ST provides 256 discrete wiper positions across a 100 kΩ end-to-end resistance, giving a step resolution of approximately 390 Ω per step. This fine resolution allows precise gain trimming in instrumentation amplifiers and voltage divider networks, with a minimum wiper resistance of approximately 75 Ω at code zero ensuring the wiper never fully shorts the resistor element.
Does the MCP4651-104E/ST retain its wiper position after a power cycle, and in what applications is this critical?
Yes, the MCP4651-104E/ST stores wiper position in on-chip non-volatile EEPROM memory, retaining the set resistance value across power cycles without requiring host MCU intervention on startup. This feature is critical in factory-calibrated systems such as sensor transmitters, industrial PID controllers, and medical devices where recalibration after every power cycle is impractical or unacceptable for safety-critical operation.
How are multiple MCP4651-104E/ST devices addressed on the same I2C bus in a multi-channel calibration system?
The MCP4651-104E/ST uses a 7-bit I2C address with the lower 3 bits set by hardware address pins A0, A1, and A2, allowing up to 8 unique devices to coexist on the same 2-wire bus. This enables a single MCU I2C port to control up to 16 independent potentiometer channels (8 devices × 2 channels each), making the MCP4651 highly scalable for multi-axis calibration fixtures and multi-channel audio or sensor conditioning boards.
Related Guides
How to Choose a BAS70 Schottky Diode for Signal Clamping: Selection Guide
A practical BAS70KFILM and BAS70-family Schottky diode selection guide for signal clamping, RF detection, leakage, and topology choices.
Jul 4, 2026
AMC1202DWVR Design Guide for Isolated Current Sensing
Practical AMC1202DWVR design guide covering shunt sizing, isolation layout, input filtering, ADC scaling, and sourcing choices.
Jul 4, 2026
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0320 | $1.03 |
| 25+ | $1.0300 | $25.75 |
| 100+ | $0.9500 | $95.00 |
| 1000+ | $0.8900 | $890.00 |
| 5000+ | $0.8800 | $4400.00 |
| 5088+ | $0.8370 | $4258.66 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”