MCP4661T-502E/ML Microchip Integrated Circuit (Quad Flat No-Lead) In Stock
Microchip MCP4661T-502E/ML is a dual-channel 256-step non-volatile I2C digital potentiometer with 5 kOhm end-to-end resistance and 2 kHz bandwidth, housed in a 16-pin VQFN package. Non-volatile memory retains wiper positions after power-off. Available for worldwide shipping.
- Manufacturer
- Microchip
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- MCP4661T-502E/ML Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel 5 kOhm digital potentiometer with 256 steps and non-volatile memory for persistent wiper position storage
- I2C increment/decrement interface with 2 kHz bandwidth supporting gain, offset, and calibration adjustment across two independent channels
- 16-pin VQFN package providing a small footprint with exposed pad for improved thermal and electrical grounding
Applications
MCP4661T-502E/ML targets programmable gain amplifiers, display contrast control, and sensor offset calibration circuits that require dual-channel resistance control with power-cycle retention. Its 5 kOhm resistance and 2 kHz bandwidth suit low-frequency signal conditioning in medical monitoring, industrial sensor nodes, and audio equalizer stages. The non-volatile memory eliminates start-up calibration routines, reducing firmware complexity and MCU flash usage in embedded systems with tight resource budgets.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | VQFN-16 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 2kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PQCC-N16 |
| JESD-609 Code | e3 |
| Number of Functions | 2 |
| Number of Positions | 257 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | LCC16,.16SQ,25 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| 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 | NO LEAD |
| Terminal Pitch | 0.65mm |
| Terminal Position | QUAD |
| Total Resistance-Nom | 5000Ω |
| Package | Quad Flat No-Lead |
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 | Thailand |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the non-volatile memory of MCP4661T-502E/ML simplify calibration in production firmware?
MCP4661T-502E/ML stores the wiper setting for both channels in on-chip non-volatile memory, so calibrated resistance values survive power removal without any external EEPROM or MCU-side storage. At next power-up, both 5 kOhm channels restore to their factory-calibrated positions within microseconds, eliminating the need for a startup calibration sequence that would otherwise consume MCU cycles and flash memory.
What resistance resolution does MCP4661T-502E/ML provide, and how does it compare across 5 kOhm?
With 256 steps across a 5 kOhm end-to-end resistance, each wiper increment changes the resistance by approximately 20 Ohm. This resolution supports gain trimming with better than 0.5% step granularity in instrumentation amplifiers operating over the full 5 kOhm span, which is tighter than most mechanical trimmers can hold over temperature.
How many MCP4661T-502E/ML devices can share an I2C bus, and what addressing mechanism is used?
MCP4661T-502E/ML supports hardware address pin selection providing up to 8 unique 7-bit I2C addresses on a single bus, enabling 16 independent potentiometer channels from one 400 kHz fast-mode I2C line. Address pins allow the designer to populate multiple devices on the same two-wire bus, simplifying PCB routing versus parallel SPI alternatives that require individual chip-select lines per device.
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