MCP4561-503E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4561-503E/MS is a single-channel, 7-bit non-volatile digital potentiometer with a 50 kΩ nominal end-to-end resistance and I2C increment/decrement control. It retains the wiper position across power cycles using on-chip EEPROM memory. Ideal for audio volume, gain, offset, and calibration adjustment circuits in MSOP-8 packaging.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4561-503E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4813(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 MCP4561-503E/MS?
- Single-channel 7-bit digital potentiometer with 50 kΩ nominal end-to-end resistance
- Non-volatile wiper position storage using on-chip EEPROM across power cycles
- I2C increment/decrement control interface for simple two-wire host connection
- 128 wiper positions for fine-grained resistance adjustment
- 0.2 kHz bandwidth supporting audio and low-frequency analog signal conditioning
- MSOP-8 package enabling compact, low-pin-count PCB integration
What is MCP4561-503E/MS used for?
MCP4561-503E/MS is used in audio equipment, instrumentation amplifiers, and sensor signal conditioning circuits where the gain, offset, or volume level must be software-adjustable and retained without a microcontroller running at all times. Its non-volatile memory makes it especially useful in calibration trim circuits where factory-set resistance values must survive power cycling in the field. The device is also deployed in programmable filter networks, LCD contrast adjustment, and portable measurement tools requiring a digitally controlled analog resistance element.
What are the specifications of MCP4561-503E/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 25Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 0.2kHz |
| 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 | 50000Ω |
| 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 | Thailand |
Where can I find the MCP4561-503E/MS datasheet?
MCP4561-503E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4561-503E/MS?
Compatible alternatives and drop-in replacements for MCP4561-503E/MS:
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Frequently Asked Questions
Why does MCP4561-503E/MS retain its wiper position after power is removed, and how does this simplify calibration workflows?
MCP4561-503E/MS uses on-chip EEPROM to store the current 7-bit wiper position, so the 50 kΩ resistance setting is restored automatically on the next power-up without any MCU intervention. This eliminates the need for a separate EEPROM or NVRAM and reduces initialization code complexity in calibration-trim circuits that must hold a factory-set value indefinitely across power cycles.
How many discrete resistance steps does MCP4561-503E/MS provide, and what is the step resolution over the 50 kΩ range?
The 7-bit architecture gives 128 wiper positions across the 50 kΩ end-to-end resistance, resulting in a step resolution of approximately 390 Ω per increment or decrement command. This fine-grained control is sufficient for audio volume, gain trimming in op-amp feedback networks, and LCD contrast adjustment where smooth analog transitions are required.
What control interface does MCP4561-503E/MS use, and how many wires are needed to connect it to a host microcontroller?
MCP4561-503E/MS uses an I2C increment/decrement interface requiring only 2 wires (SDA and SCL) plus power and ground. This 2-wire connection is supported natively by virtually every modern MCU, simplifying the hardware design compared to SPI-based digital potentiometers that require 3 or 4 signal lines per device.
What is the lead time for MCP4561-503E/MS, and how should procurement teams handle the 25-week factory lead time in production planning?
Microchip lists a 25-week factory lead time for MCP4561-503E/MS, which is significantly longer than typical passive or simple linear IC lead times. Production teams should carry at least 6 months of buffer stock and place blanket orders well ahead of the build schedule to avoid line stops, especially since digital potentiometers are often single-sourced in the BOM with no pin-compatible drop-in substitute readily available.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.8100 | $0.81 |
| 25+ | $0.6700 | $16.75 |
| 100+ | $0.6100 | $61.00 |
| 1000+ | $0.5900 | $590.00 |
| 5000+ | $0.5800 | $2900.00 |
| 7500+ | $0.4813 | $3609.75 |
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