MCP4231-503E/SL Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4231-503E/SL is a dual-channel 7-bit digital potentiometer with 128 steps and 50 kOhm end-to-end resistance, controlled via SPI increment/decrement interface. It stores wiper position in non-volatile memory and operates from 1.8 V to 5.5 V in a SOIC-14 package. Available in stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4231-503E/SL Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7980(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
- Dual independent 50 kOhm channels with 128-step 7-bit resolution controlled via SPI, enabling independent gain, offset, or volume adjustment from a host microcontroller without mechanical potentiometers
- Non-volatile wiper position memory retains last programmed resistance setting across power cycles, eliminating initialization code and ensuring repeatable calibration in production-trimmed designs
- 1.8 V to 5.5 V wide supply range with low wiper resistance supports integration into 3.3 V and 5 V analog signal chains without adding significant series resistance error
Applications
The MCP4231-503E/SL dual digital potentiometer is used for digitally adjustable gain stages, active filter tuning, and programmable bias current setting in industrial calibration equipment and automated test systems. Its non-volatile wiper memory makes it suitable for audio volume controls, LCD brightness adjustment, and sensor offset trimming that must retain settings after power-off without a host microcontroller reinitializing the device. The SPI increment/decrement interface enables integration with any microcontroller in 3.3 V or 5 V designs, including motor driver bias adjustment and DAC reference voltage scaling.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-14 |
| Factory Lead Time | 8Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.2kHz |
| 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 | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| 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 | 1.27mm |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many resistance steps does MCP4231-503E/SL provide and what is the step size for a 50 kOhm end-to-end resistance?
The MCP4231-503E/SL provides 128 steps with a nominal end-to-end resistance of 50 kOhm. Each step therefore represents approximately 390 Ohm of resistance change. In a voltage divider configuration with a 3.3 V reference, each step shifts the wiper output by roughly 25.8 mV, allowing fine-grained voltage programming across 128 discrete levels.
Does MCP4231-503E/SL retain its wiper position after power-off, and how does this benefit factory-calibrated products?
Yes, the device includes non-volatile memory that stores the wiper position across power cycles. In factory-calibrated sensor nodes or signal conditioning boards, this means the trimmed offset or gain setting is automatically restored at power-up without any microcontroller initialization sequence, reducing firmware complexity and eliminating the risk of shipping products with default (uncalibrated) resistance values.
What SPI interface does MCP4231-503E/SL use and how does it differ from SPI-addressable absolute-position digital pots?
The MCP4231-503E/SL uses an increment/decrement SPI control interface rather than an absolute-position write command. To set a specific wiper position, the host must either count steps from the known current position or reset to one end and increment to the target. This differs from absolute-register devices that accept a 7-bit target code in a single SPI transaction, adding a few microseconds of setup time per adjustment in dynamic systems.
What supply voltage does MCP4231-503E/SL support and what package does it come in for through-hole or SMD assembly?
The device operates from 1.8 V to 5.5 V, covering 3.3 V and 5 V system power rails. It is housed in a SOIC-14 package (JESD-30 code R-PDSO-G14) measuring 8.65 mm x 3.9 mm with 1.27 mm pitch, which is an SMD footprint suitable for reflow soldering and compatible with standard pick-and-place assembly in production volumes.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2000 | $1.20 |
| 100+ | $0.8900 | $89.00 |
| 1000+ | $0.8700 | $870.00 |
| 5000+ | $0.8500 | $4250.00 |
| 5016+ | $0.8000 | $4012.80 |
| 7524+ | $0.7980 | $6004.15 |
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