MCP4661-503E/ST Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4661-503E/ST is a dual-channel 50 kΩ digital potentiometer with 256-step (8-bit) resolution and non-volatile memory, controlled via an increment/decrement interface, housed in a 14-pin TSSOP package. Non-volatile wiper storage retains the last programmed resistance setting through power cycles. Available from stock worldwide with fast shipping.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- MCP4661-503E/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 MCP4661-503E/ST?
- Dual-channel 50 kΩ digital potentiometer with 256 steps (approximately 196 Ω per step) and integrated non-volatile memory for power-cycle-persistent wiper positions
- Increment/decrement control interface requiring minimal GPIO lines, simplifying firmware and PCB routing in two-channel programmable resistance applications
- 14-pin TSSOP package integrating 2 independent potentiometer channels with shared non-volatile storage, reducing BOM cost and board area versus two discrete single-channel devices
What is MCP4661-503E/ST used for?
The MCP4661-503E/ST is used in dual-channel programmable gain amplifiers, stereo audio balance and volume controls, and calibration trim circuits where two independent 50 kΩ adjustable resistances with non-volatile position memory are needed. Its non-volatile EEPROM storage eliminates initialization overhead on system startup, making it ideal for industrial process controllers, instrumentation front-ends, and LCD contrast adjustment circuits where the calibrated trim value must survive power interruptions. Medical equipment, automotive comfort control modules, and consumer audio devices leverage its dual-channel architecture for matched two-channel signal conditioning.
What are the specifications of MCP4661-503E/ST?
| Pbfree Code | Yes |
| Manufacturer Package Code | TSSOP-14 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 0.2kHz |
| 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 |
| Total Resistance-Nom | 50000Ω |
| 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 MCP4661-503E/ST datasheet?
MCP4661-503E/ST Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4661-503E/ST?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What end-to-end resistance and step count does MCP4661-503E/ST provide, and what is the effective resistance per step?
The MCP4661-503E/ST provides a 50 kΩ end-to-end resistance with 256 wiper positions (8-bit resolution), resulting in a step size of approximately 196 Ω per increment. This resolution suits applications such as programmable gain stages, LCD contrast trimmers, and analog bias adjustment circuits where incremental resistance changes of under 200 Ω are acceptable.
How does the non-volatile memory in MCP4661-503E/ST benefit industrial calibration workflows versus a volatile-only digital potentiometer?
The MCP4661-503E/ST stores wiper positions in on-chip non-volatile EEPROM, retaining the last saved resistance settings across power cycles without any external memory or microcontroller initialization sequence. In industrial calibration workflows, this means a technician can perform a one-time calibration adjustment, commit the wiper value to EEPROM, and the device will power up in the calibrated state on every subsequent boot, eliminating post-reset recalibration delays and reducing firmware complexity.
For a stereo audio design requiring two matched resistance channels, how does the dual-channel architecture of MCP4661-503E/ST compare to two separate single-channel potentiometers?
Using the dual-channel MCP4661-503E/ST places both 50 kΩ channels in a single TSSOP-14 package (approximately 5 mm x 4.4 mm footprint), versus two individual MSOP-8 or SOIC-8 single-channel devices that together would occupy roughly twice the board area. The shared die also improves channel-to-channel matching for temperature tracking, which matters in stereo gain or balance circuits where both channels should track identically across the -40 °C to +125 °C operating range.
What control interface does MCP4661-503E/ST use, and for how long can the non-volatile wiper value be reliably retained?
The MCP4661-503E/ST uses a simple increment/decrement interface with a CS pin and a U/D direction pin, requiring only 2 GPIO lines from the host MCU. The on-chip EEPROM non-volatile storage is rated for a minimum of 100,000 write cycles and data retention of at least 40 years at 25 °C, providing long-term reliability for production calibration data in instruments and control systems with service lives spanning a decade or more.
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| Qty. | Unit Price | Ext. Price |
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| 1+ | $1.5300 | $1.53 |
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| 1000+ | $1.1200 | $1120.00 |
| 5000+ | $1.1100 | $5550.00 |
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