MCP4651-103E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4651-103E/ST is a dual-channel 8-bit digital potentiometer with 10 kΩ end-to-end resistance and 257 wiper positions, controlled via I2C with non-volatile memory, packaged in a 14-pin TSSOP for programmable gain and calibration circuits.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4651-103E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5870(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 MCP4651-103E/ST?
- Dual-channel 8-bit digital potentiometer with 257 wiper positions and 10 kΩ end-to-end resistance for independent two-channel programmable resistance control
- Non-volatile wiper position storage retaining the last programmed value through power cycles, eliminating re-initialization on every power-up
- I2C 2-wire serial interface supporting multiple address configurations for multi-device bus sharing in complex analog calibration systems
- Available in 5 kΩ, 10 kΩ, and 50 kΩ resistor array variants within the MCP4651 family to match diverse impedance requirements
What is MCP4651-103E/ST used for?
The MCP4651-103E/ST is designed for dual-channel programmable gain amplifiers, DC offset calibration circuits, and LCD contrast or audio volume controls where non-volatile wiper retention is essential. Its I2C interface and 257-step resolution enable fine trimming of analog signal paths in industrial sensor transmitters and precision instrumentation without mechanical trimmers. The TSSOP-14 package allows placement alongside op-amps and instrumentation amplifiers on compact mixed-signal PCBs.
What are the specifications of MCP4651-103E/ST?
| Manufacturer Package Code | TSSOP-14 |
| Reach Compliance Code | Compliant |
| 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 MCP4651-103E/ST datasheet?
MCP4651-103E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4651-103E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does MCP4651-103E/ST offer and what resistance step size does each increment represent across 10 kΩ?
The MCP4651-103E/ST provides 257 wiper positions across its 10 kΩ end-to-end resistance, yielding a nominal step size of approximately 39 Ω per increment, enabling precise programmable resistance adjustments for gain trimming, DC offset calibration, and analog signal conditioning applications.
Does the MCP4651-103E/ST retain its wiper position after a power cycle, and why does that matter for calibration use cases?
Yes, the MCP4651-103E/ST stores wiper positions in on-chip non-volatile memory, so the calibrated resistance setting is retained through power cycling, brownouts, and reset events, eliminating the need for a microcontroller to re-write calibration values every time the system powers on.
In a dual-amplifier gain stage, how does MCP4651-103E/ST enable independent control of two channels from a single I2C address?
The MCP4651-103E/ST contains 2 independent potentiometer channels each with its own 8-bit wiper register accessible via distinct register addresses over the shared I2C bus, allowing a microcontroller to set different resistance values on each channel in separate write transactions without requiring two separate ICs or additional chip-select lines.
How does the 2 kHz bandwidth of MCP4651-103E/ST restrict its use in audio or high-frequency signal path applications?
With a nominal bandwidth of 2 kHz, the MCP4651-103E/ST is best suited for DC to low-frequency applications such as bias trimming, volume control at low audio rates, and slow calibration loops; for wideband audio above 2 kHz or RF signal attenuation, a dedicated audio-grade or high-bandwidth digital potentiometer with MHz-range bandwidth would be required.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.5870 | $0.59 |
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