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Microchip Technology MCP4441T-502E/ML
- Part No.:
- MCP4441T-502E/ML
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
MCP4441T-502E/ML.pdf
- Description:
- IC DGT POT 5KOHM 129TAP 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,771
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Product details
Overview
MCP4441T-502E/ML from Microchip Technology is a 7-bit quad I²C digital potentiometer with nonvolatile EEPROM, 50 kΩ RAB resistance, WiperLock™ technology, and operation from 2.7V to 5.5V. It provides four independent resistor networks in potentiometer configuration for precision analog gain/offset trimming in sensor signal conditioning circuits.
For engineers reviewing the MCP4441T-502E/ML datasheet, MCP4441T-502E/ML pinout, MCP4441T-502E/ML application, or MCP4441T-502E/ML equivalent, key selection criteria include nonvolatile wiper recall, 75 Ω typical wiper resistance, 129-tap resolution, -40°C to +125°C extended temperature range, and support for 100 kHz / 400 kHz / 3.4 MHz I²C bus speeds.
Technical Context
The MCP4441T-502E/ML integrates four independent 7-bit (129-tap) resistor networks with nonvolatile EEPROM storage for wiper positions and five general-purpose memory locations. Each network supports zero-to-full-scale wiper operation and terminal disconnect via TCON registers.
It features dual write protection (hardware WP pin and software-configurable bit), brown-out reset at 1.65 V, and high-voltage tolerant digital inputs up to 12.5 V. The device uses Schmitt-triggered I²C interface pins with hysteresis and supports split-rail analog operation with internal weak pull-ups on all digital inputs except SDA/SCL.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RAB Resistance | 50 kΩ ±20% - defines full-scale analog attenuation/gain range for each of four channels |
| Resolution | 7-bit / 129 taps - enables 0.78% step resolution for fine analog control |
| Wiper Resistance | 75 Ω typical - minimizes insertion error in low-impedance signal paths |
| Tempco (Ratiometric) | 15 ppm/°C typical - ensures stable voltage-divider ratio over temperature in potentiometer mode |
| I²C Speed Support | 100 kHz / 400 kHz / 3.4 MHz - allows flexible host interface timing across legacy and high-speed systems |
| Operating Voltage | 2.7V to 5.5V - compatible with standard logic rails and mixed-supply designs |
| Temperature Range | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
Package: 20-pin QFN (4×4 mm, exposed pad), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 2.7–5.5 V analog/digital core supply; powers EEPROM, logic, and resistor networks |
| VSS | Ground reference | Common return for analog and digital sections; must be low-impedance |
| SDA / SCL | I²C bidirectional data/clock | Compliant with SMBus and I²C standards; support repeated START and clock stretching |
| WP | Hardware write protect | Active-low pin that disables all EEPROM and wiper writes when asserted |
| RESET | Asynchronous reset input | Active-low signal forcing wipers to nonvolatile stored values and clearing volatile registers |
| HVC/A0 | High-voltage command / address bit | Accepts up to 12.5 V to enable WiperLock™; also serves as LSB of I²C slave address |
| A1 | I²C slave address bit | MSB of 7-bit I²C address; combines with HVC/A0 to select one of four device addresses |
| P0A–P0B, P1A–P1B, P2A–P2B, P3A–P3B | Resistor network terminals | Four independent A–W–B terminals; floating A or B enables rheostat use per channel |
| P0W–P3W | Wiper outputs | Low-impedance wiper nodes; 75 Ω typical resistance enables direct connection to op-amp inputs |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper recall | Automatically restores last-saved wiper position on power-up without host intervention |
| WiperLock™ technology | Prevents accidental wiper changes via high-voltage command (≥9 V on HVC/A0) |
| Terminal disconnect control | TCON registers allow software-controlled open-circuit of any resistor terminal (A/W/B) per channel |
| Split-rail analog support | Resistor networks operate with VA/VB referenced to VSS or external rails; no requirement for VDD tie |
| Low-power serial inactive mode | 2.5 µA typical current when I²C bus idle - extends battery life in portable instrumentation |
Applications
| Programmable Sensor Gain Calibration | Industrial DAC Output Trimming |
|---|---|
Use Scenario: Calibrating output gain of MEMS pressure sensors across production batches using factory-programmed coefficients stored in EEPROM. IC Role / Device Role / Timing Role: MCP4441T-502E/ML acts as a digitally controlled precision voltage divider in the feedback path of an instrumentation amplifier. Use Value: Eliminates manual trim potentiometers and rework; enables field recalibration via I²C without hardware modification. | Use Scenario: Compensating for offset and gain errors in 12-bit DACs used in PLC analog output modules. IC Role / Device Role / Timing Role: MCP4441T-502E/ML configures two independent trim networks-one for zero-scale offset, one for full-scale gain-each with nonvolatile retention. Use Value: Achieves <±0.1% FSR accuracy after calibration; retains settings through power cycles and thermal cycling. |
| Laser Diode Bias Control | Medical Instrument Front-End Scaling |
Use Scenario: Setting precise bias current for telecom laser diodes where stability over temperature and time is critical. IC Role / Device Role / Timing Role: MCP4441T-502E/ML functions as a programmable current-limiting resistor in series with the laser cathode, controlled by microcontroller during startup and fault recovery. Use Value: 15 ppm/°C ratiometric tempco ensures consistent current setpoint; WiperLock prevents runtime drift during EMI events. | Use Scenario: Scaling ECG electrode signals prior to ADC sampling in portable patient monitors operating from coin-cell batteries. IC Role / Device Role / Timing Role: MCP4441T-502E/ML adjusts gain of low-noise instrumentation amplifiers in real time to accommodate varying electrode contact impedance. Use Value: 2.5 µA serial-inactive current minimizes quiescent drain; 75 Ω wiper resistance avoids loading high-Z biopotential sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4461T-502E/ML | 8-bit resolution (257 taps), same 50 kΩ RAB, identical package and EEPROM features | Higher resolution required for sub-0.4% step accuracy; slightly higher INL/DNL at full scale | Select when finer analog adjustment granularity is needed and system firmware supports 8-bit addressing |
| AD5242BRUZ100 | 100 kΩ RAB, 256-tap, I²C interface, no nonvolatile memory, 2.7–5.5 V operation | Lacks automatic power-on recall; requires host to reload wiper values at boot | Choose for cost-sensitive applications where wiper state persistence is not required and board space permits TSSOP-16 |
Compared with MCP4461T-502E/ML, the MCP4441T-502E/ML trades resolution for lower code complexity and marginally better DNL; versus AD5242BRUZ100, it adds EEPROM-based reliability at the cost of higher unit price and QFN-only packaging.
Availability
MCP4441T-502E/ML is available at Aetrix Electronics and suitable for industrial sensor calibration, medical front-end scaling, laser diode bias control, and programmable gain amplifier designs requiring stable component supply across long product lifecycles.
Supply support for MCP4441T-502E/ML includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a leading provider of microcontrollers, analog components, and Flash-IP solutions, headquartered in Chandler, Arizona.
The MCP444X family is designed for precision analog trimming in harsh-environment applications, emphasizing nonvolatile configuration retention, wide temperature operation, and robust I²C communication.
FAQ
What is the RAB resistance value of the MCP4441T-502E/ML?
The MCP4441T-502E/ML has a nominal RAB resistance of 50 kΩ with ±20% tolerance, confirmed in the Electrical Characteristics table (DS22265A-page 5). This value applies to all four independent resistor networks and is measured between terminal A and terminal B at room temperature with no load.
Does the MCP4441T-502E/ML retain wiper settings after power loss?
Yes, the MCP4441T-502E/ML retains wiper settings in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored wiper position for each of the four channels, eliminating the need for host initialization. This behavior is enabled by default and documented in the Device Features table (DS22265A-page 2).
What package type is used for the MCP4441T-502E/ML?
The MCP4441T-502E/ML uses a 20-pin QFN package measuring 4 mm × 4 mm with an exposed thermal pad (EP), as specified in the "Package Types" section (DS22265A-page 1). This RoHS-compliant package supports high-density PCB layouts and efficient thermal dissipation in compact industrial modules.
Can the MCP4441T-502E/ML be used in rheostat mode?
Yes, the MCP4441T-502E/ML supports rheostat configuration by floating either terminal A or B of any resistor network, as noted in Footnote 1 (DS22265A-page 2). Each channel can be independently configured as a 3-terminal potentiometer or 2-terminal variable resistor via external PCB routing.
What I²C bus speeds does the MCP4441T-502E/ML support?
The MCP4441T-502E/ML supports I²C bus speeds of 100 kHz (Standard Mode), 400 kHz (Fast Mode), and 3.4 MHz (High-Speed Mode), as verified in Table 1-2 (DS22265A-page 13). High-speed operation requires VDD ≥ 4.5 V and bus capacitance ≤ 100 pF.
MCP4441T-502E/ML Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- WiperLock™
- Package/Case:
- 20-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 4
- Number of Taps:
- 129
- Resistance (Ohms):
- 5k
- Interface:
- I2C
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 1.8V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 150ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-QFN (4x4)
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 75
MCP4441T-502E/ML FAQ
1.How can I place an order for MCP4441T-502E/ML through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4441T-502E/ML on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCP4441T-502E/ML reliable?
The price and inventory of MCP4441T-502E/ML are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP4441T-502E/ML is usually 5 days.
3.What payment methods are accepted for MCP4441T-502E/ML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4441T-502E/ML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4441T-502E/ML?
MCP4441T-502E/ML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4441T-502E/ML order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCP4441T-502E/ML?
For technical support, including MCP4441T-502E/ML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4441T-502E/ML requirements.
6.How does Aetrix verify that MCP4441T-502E/ML is sourced from the original manufacturer or authorized distributors?
All MCP4441T-502E/ML products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCP4441T-502E/ML meets industry standards.
7.What is the process for return or replacement of MCP4441T-502E/ML?
All MCP4441T-502E/ML units undergo pre-shipment inspection (PSI). If there is an issue with MCP4441T-502E/ML, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCP4441T-502E/ML part is unused and in its original packaging.
Return procedure for MCP4441T-502E/ML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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