MCP4661-103E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
The MCP4661-103E/ST is a dual-channel 10 kΩ digital potentiometer with 257 wiper positions and I2C interface from Microchip, featuring non-volatile memory. It is ideal for precision calibration, gain control, and bias adjustment in compact TSSOP-14 form.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4661-103E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1100(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 MCP4661-103E/ST?
- Dual-channel 10 kΩ digital potentiometer with 257 wiper positions for fine resolution
- Non-volatile memory retains wiper position through power cycles without host intervention
- I2C control interface with increment/decrement commands for easy software integration
- TSSOP-14 package for space-constrained PCB designs
- RoHS compliant and REACH compliant for green manufacturing requirements
What is MCP4661-103E/ST used for?
The MCP4661-103E/ST is well-suited for electronic systems requiring programmable resistance adjustment, such as LCD contrast control, audio volume tuning, and sensor calibration circuits. Its non-volatile memory makes it an excellent choice for factory calibration routines where settings must be retained after power-down without an external EEPROM. Industrial process control boards and communication equipment also leverage this dual-channel device for dynamic gain and offset trimming.
What are the specifications of MCP4661-103E/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Resistance Law | LINEAR |
| Resistance Tolerance-Max | 20% |
| Resistor Terminal Voltage-Max | 5.5V |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.6mA |
| 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 | 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 | Philippines, Thailand |
Where can I find the MCP4661-103E/ST datasheet?
MCP4661-103E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4661-103E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many wiper positions does the MCP4661-103E/ST support, and how does that affect resolution?
The MCP4661-103E/ST provides 257 wiper positions across a 10 kΩ end-to-end resistance, giving a step size of approximately 39 Ω per step. This fine resolution suits precision calibration tasks such as ADC reference trimming, sensor bridge balancing, and gain adjustment where coarse steps would introduce unacceptable error.
Does the MCP4661-103E/ST retain its wiper setting after power is removed, and how is this achieved?
Yes, the MCP4661-103E/ST includes integrated non-volatile memory that stores the wiper position for both channels when written, so the device restores the last programmed resistance after each power cycle. This eliminates the need for an external EEPROM or host microcontroller intervention at startup, saving at least 2 additional components in typical designs.
For a compact audio volume-control circuit, which package and interface of the MCP4661-103E/ST are most relevant?
The MCP4661-103E/ST comes in a TSSOP-14 package measuring roughly 5 mm × 4.4 mm, which fits tightly on space-constrained audio PCBs. Its I2C interface uses only 2 wires, leaving more GPIO pins free on the host MCU and simplifying routing compared to SPI alternatives that require 3 or 4 signal lines.
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