MCP4542-103E/MS Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP4542-103E/MS is a single 7-bit digital potentiometer from Microchip with non-volatile memory, 10 kΩ end-to-end resistance, I2C interface with increment/decrement control, and an 8-pin MSOP package for programmable gain, offset, and bias adjustment applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- MCP4542-103E/MS Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.7070(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7-bit resolution providing 128 wiper positions for precise resistance adjustment
- 10 kΩ (103) end-to-end resistance in a single-channel configuration
- Non-volatile memory retains wiper position through power cycles without host re-initialisation
- I2C control interface with increment/decrement commands for simple host integration
- 1 kHz nominal bandwidth suitable for audio and low-frequency signal conditioning
- 8-pin MSOP package for compact PCB placement in space-constrained designs
- Lead-free RoHS-compliant with JESD-609 e3 moisture rating
Applications
MCP4542-103E/MS is used in programmable gain amplifier stages, sensor calibration circuits, and LCD contrast or audio volume control loops where a digitally adjustable resistance must retain its setting across power cycles without a host microcontroller re-writing the value on each startup. Its I2C interface and non-volatile storage make it especially practical in factory calibration workflows for industrial instruments, medical monitors, and consumer electronics where production-line trim values are stored permanently in the device.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | MSOP-8 |
| Factory Lead Time | 11Weeks |
| YTEOL | 9 |
| Additional Feature | NON-VOLATILE MEMORY |
| Bandwidth-Nom | 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 | 10000Ω |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many discrete resistance steps does the 7-bit MCP4542-103E/MS provide across its 10 kΩ range?
The 7-bit resolution provides 128 wiper positions (steps 0 through 127) across the 10 kΩ end-to-end resistance, giving each step a resolution of approximately 78 Ω; this granularity is sufficient for gain trimming in instrumentation amplifiers, sensor offset calibration, and adjustable voltage reference circuits that require better than 1% resistance resolution.
Does MCP4542-103E/MS retain its programmed wiper position after a power cycle, and what technology stores the value?
Yes, MCP4542-103E/MS uses on-chip non-volatile memory (NVM) to save the wiper position when a write command is issued, so the device restores the last programmed resistance setting on every power-up without any host MCU re-initialisation, making it ideal for factory-calibrated instruments and field-adjustable circuits that operate autonomously after programming.
What I2C address options does MCP4542-103E/MS support for multi-device use on a shared bus?
MCP4542 uses a fixed 7-bit I2C address with the three lower bits set by the hardware A0, A1, A2 address pins, allowing up to 8 devices on the same 2-wire bus; this enables multi-channel designs using 8 independent 10 kΩ potentiometers on a single I2C interface without bus arbitration conflicts between individual devices.
For an audio volume control application, is the 1 kHz bandwidth of MCP4542-103E/MS a limiting factor?
The 1 kHz nominal bandwidth is the -3 dB point of the resistive element under standard load conditions and may limit high-fidelity audio signal paths above 1 kHz; however, for DC trim, bias adjustment, and low-frequency gain control applications below a few hundred hertz, MCP4542-103E/MS performs adequately, and for broader audio bandwidths, Microchip's MCP41010 or MCP4231 series offer higher bandwidth ratings.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.0700 | $1.07 |
| 100+ | $0.8100 | $81.00 |
| 1000+ | $0.7900 | $790.00 |
| 5000+ | $0.7140 | $3570.00 |
| 7500+ | $0.7120 | $5340.00 |
| 10000+ | $0.7070 | $7070.00 |
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