MCP40D18T-104E/LT Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP40D18T-104E/LT is a single-channel 100 kΩ digital potentiometer with 128 linear positions controlled via I2C 2-wire serial interface. It operates in a 6-pin SC-70 package, suits gain and offset trimming in analog circuits, and is RoHS compliant for compact embedded designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- MCP40D18T-104E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4134(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
- Single-channel 100 kΩ digital potentiometer with 128 linear steps for fine resolution
- I2C 2-wire serial interface for direct control from any microcontroller I2C bus
- Ultra-compact 6-pin SC-70 package minimizing board area in space-constrained designs
- Non-volatile wiper position storage retains setting across power cycles
- RoHS and Pb-free compliant with JESD-609 e3 rating
Applications
The MCP40D18T-104E/LT is ideal for digitally adjustable gain stages in audio equipment, sensor signal conditioning, and programmable reference voltage circuits where a mechanical potentiometer must be replaced with software-controlled trimming. It is also used in LCD display bias adjustment, automatic gain control (AGC) loops, and calibration circuits in test and measurement instruments.
Specifications
| Pbfree Code | Yes |
| Factory Lead Time | 15Weeks |
| YTEOL | 0 |
| Bandwidth-Nom | 0.1kHz |
| 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 |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.08mA |
| 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 |
| Total Resistance-Nom | 100000Ω |
| Package | Small Outline Packages |
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 discrete resistance steps does the MCP40D18T-104E/LT provide across its 100 kΩ range?
The MCP40D18T-104E/LT provides 128 linearly spaced wiper positions across the full 100 kΩ end-to-end resistance. Each step represents approximately 787 Ω, giving sufficient resolution for audio volume control, programmable amplifier gain, and sensor offset trimming where 0.8 kΩ step size meets the accuracy requirement.
Which I2C addressing scheme does the MCP40D18T-104E/LT use, and how many devices can share the same bus?
The MCP40D18T-104E/LT uses a fixed I2C address determined by its device code, allowing multiple MCP40 family variants with different address codes to coexist on the same 2-wire bus. Up to 8 digital potentiometer devices can share a single I2C bus at 100 kHz or 400 kHz, reducing the number of GPIO lines needed for multi-channel gain control systems.
What happens to the wiper position of MCP40D18T-104E/LT when power is removed?
The MCP40D18T-104E/LT stores the wiper position in non-volatile memory, so the last programmed resistance setting is retained when supply voltage is removed. This eliminates initialization code to restore a known position at power-up, which is important for always-on analog reference or bias circuits that must start correctly before the MCU completes its boot sequence.
What is the supply outlook for MCP40D18T-104E/LT given its YTEOL rating, and what should procurement teams consider?
The MCP40D18T-104E/LT shows a YTEOL of 0 and a factory lead time of 15 weeks, suggesting the part is at or near end-of-life and experiencing constrained supply. Procurement teams should place last-time-buy orders promptly or evaluate pin-compatible replacements from Microchip's MCP40 or MCP41 series to avoid production stoppages.
How does the SC-70 package of MCP40D18T-104E/LT compare to SOT-23 alternatives for compact analog trimming circuits?
The SC-70 package used by MCP40D18T-104E/LT has a body size of approximately 2.0 mm × 1.25 mm, which is about 40% smaller in area than a standard SOT-23 package. For portable medical devices, hearing aids, and wearable sensors where PCB real estate is under 10 mm², this size reduction can be decisive in fitting analog trimming stages alongside power management and sensor ICs.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.7420 | $0.74 |
| 250+ | $0.5088 | $127.20 |
| 500+ | $0.4452 | $222.60 |
| 1000+ | $0.4134 | $413.40 |
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