MCP40D17T-103E/LT Microchip Integrated Circuit (SOT23 (6-Pin)) In Stock
Microchip MCP40D17T-103E/LT is a single-channel 7-bit digital potentiometer with 10 kΩ end-to-end resistance and 128 positions, controlled via I2C 2-wire serial interface, in a compact 6-pin SOT-23 package for programmable gain and bias adjustment.
- Manufacturer
- Microchip
- Package
- SOT23 (6-Pin)
- Pin Count
- 6
- Lifecycle
- OBSOLETE
- Datasheet
- MCP40D17T-103E/LT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4915(MOQ 5)
- 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 MCP40D17T-103E/LT?
- Single-channel 7-bit digital potentiometer with 128 wiper positions and 10 kΩ end-to-end resistance for precise programmable resistance control
- I2C 2-wire serial interface requiring only 2 control lines, minimizing pin usage in microcontroller-based designs
- Volatile wiper position with power-on reset to mid-scale (64/128) for predictable start-up behavior in automatic gain and bias circuits
- Ultra-compact 6-pin SOT-23 package measuring under 3 mm × 3 mm for space-constrained portable designs
What is MCP40D17T-103E/LT used for?
The MCP40D17T-103E/LT is used in audio volume control, programmable amplifier gain stages, and DC bias trimming circuits where software-adjustable resistance replaces mechanical trimmers. Its I2C interface and 128-step resolution make it practical for calibration routines in sensor conditioning boards and LCD brightness control systems. The tiny SOT-23 footprint allows integration alongside op-amps and ADCs on densely packed analog front-end PCBs.
What are the specifications of MCP40D17T-103E/LT?
| Pbfree Code | Yes |
| Factory Lead Time | 7Weeks |
| YTEOL | 0 |
| Bandwidth-Nom | 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 | 10000Ω |
| 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 |
Where can I find the MCP40D17T-103E/LT datasheet?
MCP40D17T-103E/LT Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP40D17T-103E/LT?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many discrete resistance steps does the MCP40D17T-103E/LT offer and what is the step size across its 10 kΩ range?
The MCP40D17T-103E/LT provides 128 wiper positions across its 10 kΩ end-to-end resistance, yielding a nominal step size of approximately 78 Ω per step, enabling fine-grained programmable resistance for gain trimming, bias adjustment, and analog calibration tasks.
Which communication interface does the MCP40D17T-103E/LT use and what is its maximum clock speed?
The device uses an I2C 2-wire serial interface supporting standard-mode 100 kHz and fast-mode 400 kHz clock speeds, allowing easy daisy-chaining with other I2C peripherals such as sensors or DACs on a shared bus with only 2 signal lines.
What wiper position does the MCP40D17T-103E/LT default to at power-on and why does that matter for circuit stability?
At power-on, the wiper resets to the mid-scale position (code 64 out of 128), placing it at approximately 5 kΩ from each terminal, which prevents unexpected low or high resistance states that could overdrive amplifier inputs or saturate bias networks before firmware initializes the device.
In what scenarios would a designer choose MCP40D17T-103E/LT over a mechanical trimmer potentiometer?
A designer prefers MCP40D17T-103E/LT over a mechanical trimmer when the design requires remote calibration, automated production test, or dynamic runtime adjustment of gain or bias, since I2C commands from a microcontroller can update the 128-position wiper in microseconds without physical access to the board.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $0.5600 | $2.80 |
| 25+ | $0.5500 | $13.75 |
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