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
What are the key features of MCP4651-104E/ST?
- 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
What is MCP4651-104E/ST used for?
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.
What are the specifications of MCP4651-104E/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 |
| ## 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 |
Where can I find the MCP4651-104E/ST datasheet?
MCP4651-104E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4651-104E/ST?
Compatible alternatives and drop-in replacements for MCP4651-104E/ST:
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.
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More from Microchip
| 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 |
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