MCP4561-104E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4561-104E/MS is a single-channel 256-step digital potentiometer from Microchip with 100 kOhm end-to-end resistance, increment/decrement control interface, and non-volatile wiper memory. Features 100 Hz bandwidth in an 8-pin MSOP package. Available from stock worldwide.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4561-104E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5800(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
- 256-step resolution across 100 kOhm for fine 391-ohm-per-step resistance adjustment via increment/decrement pins
- Non-volatile EEPROM wiper memory retains resistance setting through power cycles with up to 100,000 write cycles
- Compact 8-pin MSOP package suitable for size-constrained calibration and tuning circuits
Applications
The MCP4561-104E/MS is used in precision calibration circuits, sensor signal conditioning, and programmable filter design where fine 100 kOhm resistance control in 256 steps replaces mechanical trimmer potentiometers with a digitally repeatable, wear-free alternative. Its increment/decrement interface allows simple GPIO control from any microcontroller without SPI bus availability, making it ideal for cost-sensitive 2-wire control scenarios. Non-volatile memory ensures calibration coefficients survive power outages in industrial instruments, utility meters, and medical diagnostic equipment.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 25Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| 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 | 2.7V |
| 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 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How fine is the resistance step size on MCP4561-104E/MS across its 100 kOhm range?
With 256 steps across 100 kOhm, each increment or decrement changes resistance by approximately 391 ohms. This fine resolution enables precise gain adjustment in instrumentation amplifiers, allowing 0.4% gain steps that suit calibration of analog sensor outputs requiring better than 1% accuracy across a -40°C to 125°C operating range.
What is the bandwidth limitation of MCP4561-104E/MS and which signal frequency ranges are affected?
The -3 dB bandwidth of MCP4561-104E/MS is 100 Hz (0.1 kHz nominal), making it suitable only for DC and very low-frequency signal applications such as offset trimming, bias adjustment, and slowly varying sensor conditioning. Signals above 100 Hz experience significant attenuation; for audio or higher-frequency applications, lower-resistance variants such as the 5 kOhm MCP4561-502 provide a higher bandwidth pole.
Can MCP4561-104E/MS be controlled with only 2 GPIO pins from a microcontroller?
Yes, the increment/decrement interface requires only 2 logic inputs — one pin to step the wiper up and one to step it down — making it fully controllable from any 2 available GPIO pins without SPI or I2C bus resources. Each active-low pulse on the U/D pin advances the wiper one of 256 positions, and the non-volatile memory stores the final position so no GPIO state needs to be maintained after power-off.
How does MCP4561-104E/MS differ from MCP4151-104 for a non-volatile 100 kOhm single-channel digital potentiometer design?
MCP4561-104E/MS uses an increment/decrement interface and provides 256 steps, while MCP4151-104 uses SPI and also provides 256 steps at 100 kOhm but lacks non-volatile memory. The MCP4561's built-in non-volatile storage eliminates re-initialization firmware at power-on, saving code space and startup time in calibration-critical instruments. Choose MCP4561 when persistent settings are mandatory; choose MCP4151 when SPI bus is already available and volatile storage is acceptable.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8100 | $0.81 |
| 100+ | $0.6100 | $61.00 |
| 1000+ | $0.5900 | $590.00 |
| 5000+ | $0.5800 | $2900.00 |
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