MCP4542-104E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip MCP4542-104E/MS is a non-volatile 128-step digital potentiometer with 100 kΩ end-to-end resistance in an MSOP-8 package. Uses an increment/decrement interface and retains wiper position through power cycles via built-in EEPROM. Available in stock with worldwide shipping at competitive pricing.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4542-104E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7120(MOQ 100)
- 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 MCP4542-104E/MS?
- 128-step resolution over 100 kΩ end-to-end resistance for precise digital control of gain, offset, or bias in analog signal paths
- Non-volatile EEPROM wiper memory retains the last set position through power cycles without requiring re-initialization from a host MCU
- Increment/decrement serial interface simplifies firmware control with minimal pin count for applications needing coarse resistance adjustment
- MSOP-8 package provides a compact 3 mm x 3 mm footprint for space-constrained board designs with automated SMT assembly
What is MCP4542-104E/MS used for?
The MCP4542-104E/MS is used in calibration circuits, programmable gain amplifiers, and bias voltage trimmers where a host microcontroller must set and persistently store a resistance value without manual potentiometer adjustment. Its non-volatile wiper memory is particularly valuable in field-calibrated industrial sensors and audio equipment where the last user-set level must be restored after a power outage. The increment/decrement interface and 100 kΩ resistance suit high-impedance analog signal conditioning paths found in instrumentation amplifiers, active filter tuning, and LCD contrast adjustment circuits.
What are the specifications of MCP4542-104E/MS?
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 0.1kHz |
| Control Interface | INCREMENT/DECREMENT |
| Converter Type | DIGITAL POTENTIOMETER |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Number of Positions | 129 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.19 |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE |
| 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 | 100000Ω |
| 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 | Thailand |
Where can I find the MCP4542-104E/MS datasheet?
MCP4542-104E/MS Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP4542-104E/MS?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the non-volatile memory in MCP4542-104E/MS prevent resistance loss during power cycles?
The MCP4542-104E/MS stores the wiper position in on-chip EEPROM whenever a write command is issued. When power is restored, the device automatically loads the saved position into the wiper register before entering normal operation, eliminating the need for the host MCU to re-send the calibration value and avoiding any intermediate invalid resistance state during startup.
What resistance resolution does each step of MCP4542-104E/MS provide and how does this affect gain adjustment accuracy?
With 128 steps across a 100 kΩ end-to-end resistance, each increment or decrement step changes the wiper resistance by approximately 781 Ω. In a voltage-divider gain stage, this translates to a gain resolution of roughly 0.78%, which is adequate for audio volume controls, LCD contrast adjustment, and general-purpose calibration circuits but may be insufficient for applications requiring sub-0.1% accuracy.
Which interface protocol does MCP4542-104E/MS use to adjust the wiper and how many control pins are required?
The MCP4542-104E/MS uses a 2-wire increment/decrement interface with a CS chip-select pin and a separate increment/decrement command pin, requiring only 2 or 3 control lines from the host MCU. This minimal interface simplifies firmware compared to SPI or I2C digital potentiometers, making it suitable for microcontrollers with limited available pins or simple state-machine controllers without a full serial bus.
In what bandwidth-limited signal path is MCP4542-104E/MS most appropriate given its 0.1 kHz nominal bandwidth?
The MCP4542-104E/MS is designed for DC and very low-frequency applications with a nominal signal bandwidth of 0.1 kHz (100 Hz). It is most appropriate for DC bias trimming, slowly varying gain adjustments in instrumentation amplifiers, contrast or brightness controls for LCD panels, and calibration potentiometers in precision measurement equipment where signal frequencies remain below 100 Hz.
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More from Microchip
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 100+ | $0.8100 | $81.00 |
| 300+ | $0.8040 | $241.20 |
| 500+ | $0.7970 | $398.50 |
| 1000+ | $0.7880 | $788.00 |
| 5000+ | $0.7140 | $3570.00 |
| 7500+ | $0.7120 | $5340.00 |
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