MCP4018T-502E/LT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
Microchip MCP4018T-502E/LT is a single-channel 50 kΩ 7-bit I2C digital potentiometer with 128 wiper positions in a SOT-23-6 package, featuring 2 kHz bandwidth. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- MCP4018T-502E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5790(MOQ 100)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 128-position 7-bit resolution over 50 kΩ giving 390 Ω per step for precise analog adjustment via 2-wire I2C interface
- SOT-23-6 package (2.9 mm x 1.6 mm) enables ultra-compact board integration, saving over 90% area vs mechanical trimmers
- 2-wire I2C serial control simplifies firmware integration with any microcontroller I2C peripheral at up to 400 kHz
Applications
The MCP4018T-502E/LT is used in portable medical devices and wearables where firmware-adjustable bias voltages or gain settings must be updated over I2C without physical access to the PCB. It is also applied in automated test equipment, LCD contrast tuning circuits, and programmable current limiters in power management modules, benefiting from its tiny SOT-23-6 footprint and 1.8 V to 5.5 V supply range.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 7Weeks |
| YTEOL | 0 |
| Bandwidth-Nom | 2kHz |
| Control Interface | 2-WIRE SERIAL |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G6 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 128 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP6,.08 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Supply Current-Max | 0.6mA |
| Surface Mount | YES |
| Temperature Coefficient-Nom | 150ppm/°C |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Total Resistance-Nom | 5000Ω |
| Package | SOT23 (6-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| 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 wiper positions does MCP4018T-502E/LT support, and what resistance step does each position represent?
The MCP4018T provides 128 wiper positions (7-bit resolution) across a 50 kΩ end-to-end resistance, giving approximately 390 Ω per step. This resolution is suitable for bias voltage trimming and gain adjustment in amplifier circuits where better than 1% resistance accuracy is required.
At what I2C clock speed can MCP4018T-502E/LT be driven, and how quickly can a new position be written?
The device supports standard-mode 100 kHz and fast-mode 400 kHz I2C operation. At 400 kHz, a complete 2-wire write transaction (start, address byte, data byte, stop) completes in approximately 20 µs, allowing over 50,000 position updates per second — fast enough for real-time audio or feedback-loop gain adjustments.
What supply voltage range does MCP4018T-502E/LT cover, making it compatible with 1.8 V microcontroller platforms?
The MCP4018T operates from 1.8 V to 5.5 V, directly spanning 1.8 V ARM microcontroller I/O levels, 3.3 V system rails, and legacy 5 V designs. No level shifting is required when the MCU and MCP4018T share the same 1.8 V, 2.5 V, 3.3 V, or 5 V supply, reducing BOM complexity and board area.
When should MCP4018T-502E/LT be chosen over MCP4152 for a space-constrained wearable design?
Choose MCP4018T when the host microcontroller already has an I2C bus and no free SPI CS lines are available, or when the 2-wire interface reduces trace count on a flexible PCB. The SOT-23-6 package (2.9 mm x 1.6 mm, under 5 mm²) is smaller than the DFN-8 footprint of SPI alternatives, saving critical area on a wearable board where every square millimeter affects enclosure fit and battery capacity.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.5790 | $57.90 |
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