MCP1541-I/TO Microchip Integrated Circuit (Other) In Stock
The Microchip MCP1541-I/TO is a three-terminal series voltage reference producing a precise 4.096 V output with 1% initial accuracy in a TO-92-3 package. It operates up to a 7 V maximum input supply, making it compatible with 5 V systems needing a stable ADC reference. Ideal for 12-bit ADC calibration, data acquisition systems, and portable precision measurement instruments.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP1541-I/TO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3200(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP1541-I/TO?
- 4.096 V fixed series voltage reference with 1% initial accuracy
- Three-terminal TO-92-3 package for simple through-hole board integration
- Maximum input supply rating of 7 V for 5 V rail compatibility
- Output voltage maximum of 4.137 V defining tight regulation band
- Pb-free, RoHS and REACH compliant with JESD-609 e3 classification
- Low component count reference suitable for portable and battery-operated instruments
What is MCP1541-I/TO used for?
The MCP1541-I/TO is used as an ADC voltage reference in 12-bit and 10-bit data acquisition systems where a stable 4.096 V reference simplifies output code scaling to exactly 1 mV per LSB for a 12-bit converter. It also serves in precision calibration circuits, digital panel meters, and low-cost signal conditioning boards that require a reliable through-hole reference compatible with standard 5 V supply rails.
What are the specifications of MCP1541-I/TO?
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-92-3 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Analog IC - Other Type | THREE TERMINAL VOLTAGE REFERENCE |
| JESD-30 Code | O-PBCY-W3 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Output Voltage-Max | 4.137V |
| Output Voltage-Min | 4.055V |
| Output Voltage-Nom | 4.096V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.1,50 |
| Package Shape | ROUND |
| Package Style | CYLINDRICAL |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 0.12mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temp Coef of Voltage-Max | 50ppm/°C |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | WIRE |
| Terminal Pitch | 1.27mm |
| Terminal Position | BOTTOM |
| Trim/Adjustable Output | NO |
| Voltage Tolerance-Max | 1% |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines, Taiwan |
Where can I find the MCP1541-I/TO datasheet?
MCP1541-I/TO Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP1541-I/TO?
Compatible alternatives and drop-in replacements for MCP1541-I/TO:
suggested
suggested
suggested
suggested
Frequently Asked Questions
Why is 4.096 V a convenient reference voltage level for designs using 12-bit ADCs?
A 4.096 V reference produces exactly 1 mV per LSB with a 12-bit ADC that has 4096 discrete steps, simplifying firmware voltage calculation to a direct integer-to-millivolt mapping. The MCP1541-I/TO provides this 4.096 V output at 1% accuracy, making it a practical choice for eliminating floating-point scaling in embedded measurement and data acquisition firmware.
What input supply range does the MCP1541-I/TO support, and does it fit a standard 5 V system rail?
The MCP1541-I/TO operates with an input supply up to 7 V maximum, which comfortably accommodates a standard 5 V system rail with normal tolerance variation. The headroom between the 4.096 V output and the 5 V supply is sufficient to maintain stable reference regulation without requiring an additional higher-voltage supply rail.
For a portable handheld instrument, how does the TO-92-3 package simplify prototyping and low-volume production of the reference circuit?
The TO-92-3 through-hole package of the MCP1541-I/TO requires only 3 pins — input, output, and ground — with no external compensation components, making it straightforward to integrate on perfboard prototypes or low-volume hand-soldered PCBs. The compact 3-pin footprint minimizes layout area compared to SOT-23 surface-mount alternatives when through-hole assembly is preferred.
What accuracy class does the MCP1541-I/TO offer, and when should a tighter 0.5% variant be considered instead?
The MCP1541-I/TO is specified at 1% initial accuracy, placing its output between 4.055 V and 4.137 V. For applications such as precision weigh scales, medical-grade instrumentation, or calibrated current sources where total system error budgets are below ±0.5%, a tighter 0.5% or 0.2% reference variant should be evaluated to ensure the reference contribution does not dominate the overall measurement uncertainty.
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