MCP4661-502E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4661-502E/ST is a dual-channel 5 kΩ digital potentiometer from Microchip Technology with 256 wiper positions per channel, I2C increment/decrement control, and integrated non-volatile memory. It is housed in a 14-pin TSSOP package for compact mixed-signal board layouts. From $1.20, in stock, worldwide shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4661-502E/ST Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.0900(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 MCP4661-502E/ST?
- Dual 5 kΩ channels with 256-step resolution in a 14-pin TSSOP package replace 2 discrete mechanical trimmers, enabling software-driven calibration for 2 analog signal paths simultaneously
- Non-volatile EEPROM stores wiper positions across power cycles, so calibrated 5 kΩ settings are restored instantly at startup without host microcontroller re-initialization
- Increment/decrement I2C control interface allows step-by-step resistance adjustment from firmware, ideal for interactive tuning loops and closed-loop control applications
What is MCP4661-502E/ST used for?
MCP4661-502E/ST is used in dual-axis sensor calibration circuits, programmable audio volume controls, and adjustable op-amp gain stages where two independent 5 kΩ resistance channels need software control via I2C. Its non-volatile memory suits set-and-forget calibration in industrial transmitters and HVAC controllers that must retain their trim settings across power outages. The 14-pin TSSOP package enables placement alongside analog front-end components on dense instrumentation PCBs.
What are the specifications of MCP4661-502E/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 2kHz |
| 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 |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Total Resistance-Nom | 5000Ω |
| 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 MCP4661-502E/ST datasheet?
MCP4661-502E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4661-502E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many channels does MCP4661-502E/ST have, and what resistance value does each channel provide?
MCP4661-502E/ST contains 2 independent potentiometer channels, each providing a 5 kΩ end-to-end resistance with 256 wiper positions. Each step increments or decrements resistance by approximately 19.5 Ω, giving fine-grained control for gain trimming, offset adjustment, or filter corner frequency tuning in dual-channel analog signal conditioning circuits.
What control interface does MCP4661-502E/ST use, and what advantage does increment/decrement have over absolute-position writes?
MCP4661-502E/ST uses an I2C interface with increment and decrement commands, allowing firmware to step the wiper up or down by 1 of 256 positions per command. This is useful in closed-loop control systems where the MCU continuously adjusts the 5 kΩ wiper toward a target setpoint without needing to calculate or track the absolute register value, simplifying control loop firmware at low I2C bus overhead.
How does MCP4661-502E/ST's non-volatile memory benefit field-calibrated sensor equipment?
The integrated non-volatile EEPROM retains wiper position values when power is removed, so a factory or field calibration of the dual 5 kΩ channels persists through power cycles. In remote sensor stations or industrial transmitters that power-cycle frequently, this eliminates the cost and complexity of storing calibration data externally in a dedicated EEPROM or MCU flash, and ensures the 256-step calibration state is immediately valid within milliseconds of power-on.
For a compact mixed-signal board, how large is the MCP4661-502E/ST footprint, and which lead time should purchasing teams plan for?
MCP4661-502E/ST is housed in a 14-pin TSSOP package with a body width of approximately 4.4 mm and 0.65 mm pin pitch, occupying around 30 mm² of PCB area for both dual 5 kΩ channels. Purchasing teams should plan for a typical factory lead time of 7 weeks from Microchip's authorized distributors, so placing orders at least 2 months ahead of production start ensures uninterrupted supply for mixed-signal boards using this digital potentiometer.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.6800 | $1.68 |
| 100+ | $1.1600 | $116.00 |
| 1000+ | $1.1200 | $1120.00 |
| 5000+ | $1.1100 | $5550.00 |
| 5088+ | $1.1000 | $5596.80 |
| 7584+ | $1.0900 | $8266.56 |
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