MCP4161-104E/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4161-104E/SN is a single-channel 100 kΩ 8-bit digital potentiometer from Microchip featuring SPI interface with increment/decrement control and 257 wiper positions. It operates from 1.8V to 5.5V and is housed in a compact SOIC-8 package with non-volatile memory for wiper position retention. Available from stock with worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4161-104E/SN Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.8540(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 MCP4161-104E/SN?
- Single-channel 100 kΩ end-to-end resistance with 257 wiper positions (8-bit resolution)
- Non-volatile EEPROM stores wiper position across power cycles
- SPI interface with increment/decrement and direct wiper-address write modes
- Wide supply voltage range: 1.8V to 5.5V
- Low wiper resistance of approximately 75 Ω at 5V
- Compact SOIC-8 package for easy PCB integration
- Operating temperature range: -40°C to +125°C
What is MCP4161-104E/SN used for?
The MCP4161-104E/SN is widely used for digitally adjustable gain stages, bias voltage setting, and calibration trim circuits in industrial and consumer electronics. Its non-volatile wiper storage makes it ideal for set-and-forget potentiometer applications such as LCD contrast control, audio volume adjustment, and sensor offset calibration where the last setting must be retained after power removal. The SPI interface enables precise software-controlled resistance adjustment in microcontroller systems operating from 1.8V to 5.5V supply rails.
What are the specifications of MCP4161-104E/SN?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 7Weeks |
| YTEOL | 9 |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.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 |
| Total Resistance-Nom | 100000Ω |
| ## MCP4161-104E/SN Alternates Showing results | Image |
| 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 | Mainland China, Thailand |
Where can I find the MCP4161-104E/SN datasheet?
MCP4161-104E/SN Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4161-104E/SN?
Compatible alternatives and drop-in replacements for MCP4161-104E/SN:
suggested
suggested
Frequently Asked Questions
How many discrete resistance steps does the MCP4161-104E/SN provide and what end-to-end resistance does it offer?
The MCP4161-104E/SN provides 257 wiper positions over a 100 kΩ end-to-end resistance, giving approximately 391 Ω per step. This 8-bit resolution enables fine-grained analog adjustment, making it suitable for precision gain control, LCD bias setting, and filter tuning circuits where coarse mechanical potentiometers would introduce tolerance and drift issues.
Will the MCP4161-104E/SN retain its wiper position after a power cycle, and how is this useful in production calibration?
Yes, the MCP4161-104E/SN stores its wiper position in on-chip non-volatile EEPROM, which retains the value for at least 200 years and survives more than 100,000 write cycles. This allows a production calibration routine to set the trim value once over SPI during factory test, and the part will power up at the exact same position every time, eliminating the need for recalibration after every reboot in instruments or sensor signal-conditioning boards.
For a low-voltage 1.8V IoT sensor design, is the MCP4161-104E/SN a suitable digital potentiometer choice?
Yes, the MCP4161-104E/SN operates from a supply voltage as low as 1.8V, making it directly compatible with sub-2V IoT and wearable microcontroller systems. The SPI interface works at standard 3.3V or 1.8V logic levels, and the 100 kΩ resistance with 257 steps gives sufficient resolution for adjusting sensor bias or threshold voltages. The SOIC-8 package with a footprint under 5 mm × 4 mm also fits within tight board space constraints typical of IoT modules.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2700 | $1.27 |
| 25+ | $1.0600 | $26.50 |
| 100+ | $0.9700 | $97.00 |
| 1000+ | $0.9400 | $940.00 |
| 5000+ | $0.8620 | $4310.00 |
| 7500+ | $0.8540 | $6405.00 |
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