MCP4361-503E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4361-503E/ST is a quad-channel SPI digital potentiometer with 256 steps and 50 kΩ end-to-end resistance, controlled via 3-wire serial interface, housed in a 20-pin TSSOP package for precision analog adjustment in audio, calibration, and sensor-bias circuits.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- MCP4361-503E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.6800(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 MCP4361-503E/ST?
- Quad independent digital potentiometer channels in a single 20-pin TSSOP package
- 256-step resolution providing fine-grained analog control with 50 kΩ total resistance
- 3-wire SPI-compatible serial interface for simple microcontroller integration
- Non-volatile wiper position storage preserving settings through power cycles
- RoHS-compliant, lead-free construction for end-product compliance
What is MCP4361-503E/ST used for?
The MCP4361-503E/ST is used in applications requiring software-controlled analog gain, offset trimming, and bias adjustment, such as audio volume controls, sensor-signal conditioning, LCD contrast tuning, and automated test equipment calibration. Its four independent channels and SPI interface allow a single microcontroller to replace multiple manual trimmer potentiometers, enabling remote calibration and factory-end-of-line tuning without board access.
What are the specifications of MCP4361-503E/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-20 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.2kHz |
| Control Interface | 3-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP20,.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 | 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 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Philippines, Thailand |
Where can I find the MCP4361-503E/ST datasheet?
MCP4361-503E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4361-503E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
With 256 steps over a 50 kΩ range, what is the wiper step size of MCP4361-503E/ST and how does that affect gain resolution?
Dividing 50 kΩ by 256 steps gives approximately 195 Ω per step. In a non-inverting amplifier circuit with a 10 kΩ fixed resistor, this step size translates to a gain change of roughly 0.02 V/V per step, sufficient for audio volume adjustment or sensor-offset trimming where continuous fine resolution is more important than absolute accuracy of the end-to-end resistance.
Does MCP4361-503E/ST retain its wiper position after a power cycle, and how does that benefit field-calibrated equipment?
The MCP4361 includes non-volatile memory (EEPROM) that stores each channel's wiper position through power cycles. In field-calibrated instruments, this means a one-time factory calibration value survives power loss, battery swaps, or firmware resets, eliminating the need for re-calibration on each startup and reducing service calls in instruments such as gas analyzers or weighing systems.
In a 4-channel potentiometer design, how does the MCP4361-503E/ST's TSSOP-20 package compare to using four discrete single-channel pot ICs?
Four single-channel SOT-23 digital potentiometers would occupy roughly 4×7 mm² = 28 mm² of board area, while the MCP4361 TSSOP-20 body is approximately 6.4×4.4 mm = 28 mm²—similar footprint—but requires only 1 decoupling capacitor and 3 shared SPI lines instead of 12+ individual control lines. This reduces wiring complexity and SPI bus overhead, particularly in microcontrollers with limited GPIO.
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