MCP4261-103E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4261-103E/ST is a dual-channel digital potentiometer from Microchip with 10 kΩ end-to-end resistance and 257 wiper positions per channel. The SPI-compatible serial interface provides precise digital resistance control in a 14-pin TSSOP package for compact audio and signal-conditioning designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4261-103E/ST Datasheet PDF
- Category
- Integrated Circuit
- 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 10 kΩ digital potentiometer with 257 wiper positions per channel for fine-grained resistance adjustment
- SPI serial interface with increment/decrement commands enables easy integration with any microcontroller
- Compact 14-pin TSSOP package with non-volatile wiper position storage retains settings through power cycles
Applications
The MCP4261-103E/ST is used in audio equipment for digitally controlled volume, tone, and balance adjustments without mechanical potentiometers. Industrial and instrumentation designs employ it in programmable gain amplifiers and filter tuning circuits where precise 10 kΩ resistance control is needed. Consumer electronics and smart-home devices use the SPI interface to dynamically adjust LCD contrast, LED dimming, or sensor calibration offsets.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 1kHz |
| Control Interface | INCREMENT/DECREMENT |
| 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 | 5V |
| Supply Current-Max | 1mA |
| Supply Voltage-Nom | 5V |
| 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 | 10000Ω |
| ## MCP4261-103E/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 | Malaysia, Philippines, Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP4261-103E/ST:
Frequently Asked Questions
How many wiper positions does the MCP4261-103E/ST provide, and what resistance resolution does that translate to for a 10 kΩ pot?
The MCP4261-103E/ST offers 257 wiper positions over a 10 kΩ end-to-end resistance, yielding a step resolution of approximately 39 Ω per step. This fine resolution makes it suitable for precise audio volume control, programmable gain stages, and sensor offset calibration where coarse adjustment would introduce audible or measurable error.
Which microcontroller interfaces are compatible with the MCP4261-103E/ST, and how fast can the SPI bus run?
The MCP4261-103E/ST uses a standard 4-wire SPI interface supporting clock rates up to 10 MHz, making it directly compatible with virtually all modern MCUs including PIC, AVR, ARM Cortex-M, and ESP32 families. The increment/decrement command set simplifies firmware, and the 14-pin TSSOP package is easy to route on a 2-layer PCB.
For a dual-channel audio preamplifier design, why would MCP4261-103E/ST be a better choice than two discrete single-channel pots?
The MCP4261-103E/ST integrates 2 independent 10 kΩ potentiometers in a single 14-pin TSSOP package, saving PCB area and simplifying BOM management compared to two discrete single-channel devices. Both channels share one SPI bus connection, reducing GPIO usage and enabling stereo volume tracking in software with near-simultaneous updates at up to 10 MHz SPI clock speed.
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