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Microchip Technology MCP4441T-503E/ML
- Part No.:
- MCP4441T-503E/ML
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
MCP4441T-503E/ML.pdf
- Description:
- IC DGTL POT 50KOHM 129TAP 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,987
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Product details
Overview
MCP4441T-503E/ML from Microchip Technology is a 7-bit quad I²C digital potentiometer with nonvolatile EEPROM, 50 kΩ end-to-end resistance, and WiperLock™ technology. It provides four independent resistor networks in a TSSOP-20 package, operates from 2.7V to 5.5V, supports I²C up to 3.4 MHz, and features 75 Ω typical wiper resistance for precision analog control in industrial sensor calibration and power supply trimming.
For engineers reviewing the MCP4441T-503E/ML datasheet, MCP4441T-503E/ML pinout, MCP4441T-503E/ML application, or MCP4441T-503E/ML equivalent, key selection criteria include nonvolatile wiper recall, 50 kΩ RAB tolerance (±20%), -40°C to +125°C extended temperature range, I²C high-voltage tolerant inputs (up to 12.5V), and terminal disconnect capability via TCON register.
Technical Context
The MCP4441T-503E/ML implements four independent 7-bit (129-tap) potentiometer networks with zero-scale-to-full-scale wiper operation and automatic nonvolatile recall on power-up. Each network supports both potentiometer and rheostat configurations via external terminal wiring.
Its I²C interface includes hardware/software write protection, reset input, and high-voltage command mode (HVC/A0) for WiperLock activation. The device integrates five general-purpose EEPROM locations and uses 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 voltage division ratio and load impedance matching |
| Resolution | 7-bit (129 taps) - enables 0.78% step resolution for fine-grained gain or offset adjustment |
| Wiper Resistance | 75 Ω typical - minimizes signal path error in low-impedance feedback loops |
| 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 timing and fast wiper updates in real-time systems |
| Operating Voltage | 2.7V to 5.5V - compatible with standard logic rails and mixed-signal system supplies |
| Extended Temp Range | -40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and outdoor equipment |
Pinout & Package
Package: 20-pin TSSOP (4.4 mm × 6.5 mm, 0.65 mm pitch), moisture sensitivity level 3, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | 2.7–5.5V analog/digital core supply; powers resistor networks and I²C logic |
| VSS | Ground reference | Common return for analog and digital sections; must be low-impedance |
| SDA | I²C data line | Open-drain bidirectional interface; requires external pull-up to VDD |
| SCL | I²C clock line | Input-only clock; synchronizes all read/write operations to EEPROM and wiper registers |
| WP | Hardware write protect | Active-low pin; disables all EEPROM and wiper writes when asserted |
| RESET | Asynchronous reset | Active-low input; forces wipers to nonvolatile stored values and clears status registers |
| HVC/A0 | High-voltage command / address bit | Accepts up to 12.5V to enable WiperLock™; also serves as LSB of I²C address when <12.5V |
| A1 | I²C address bit | MSB of 7-bit I²C slave address; sets one of four possible addresses (0x2C–0x2F) |
| P0A–P0B, P1A–P1B, P2A–P2B, P3A–P3B | Resistor network terminals | Four independent A–W–B terminals; each pair forms one 50 kΩ potentiometer network |
| P0W–P3W | Wiper outputs | Four analog wiper nodes; connect to feedback paths, bias points, or sensor interfaces |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Automatic recall of last wiper position after power cycle eliminates startup calibration |
| WiperLock™ technology | Prevents accidental wiper changes during operation using high-voltage command or software flag |
| Terminal disconnect via TCON | Software-controllable open-circuit state for each resistor terminal enables safe power sequencing |
| High-voltage tolerant inputs | HVC/A0, A1, WP, RESET accept up to 12.5V - simplifies level-shifting in mixed-voltage systems |
| Brown-out reset protection | 1.5V typical POR threshold ensures reliable initialization below valid VDD operating range |
Applications
| Industrial Sensor Calibration | Programmable Power Supply Trim |
|---|---|
Use Scenario: Adjusting offset/gain in 4–20 mA transmitter front-ends across temperature and unit variance. IC Role / Device Role / Timing Role: Quad potentiometer providing independent calibration for multiple sensor channels with nonvolatile recall. Use Value: Eliminates manual trimpots and field recalibration; maintains accuracy over -40°C to +125°C with 15 ppm/°C ratiometric tempco. | Use Scenario: Fine-tuning output voltage and current limits in digitally controlled DC-DC modules. IC Role / Device Role / Timing Role: Precision analog feedback divider element in closed-loop regulation circuits. Use Value: Enables factory-programmed setpoints stored in EEPROM; supports remote reconfiguration via I²C without hardware change. |
| Laser Diode Bias Control | Audio Channel Balance |
Use Scenario: Setting precise bias current for telecom laser drivers where thermal drift must be minimized. IC Role / Device Role / Timing Role: Rheostat-mode current-setting element in constant-current source topology. Use Value: 75 Ω wiper resistance and 50 ppm/°C absolute tempco ensure stable bias over wide ambient range. | Use Scenario: Real-time left/right channel volume balancing in professional audio mixing consoles. IC Role / Device Role / Timing Role: Dual-channel digital potentiometer for analog signal attenuation with glitch-free wiper transitions. Use Value: I²C 3.4 MHz support enables sub-millisecond updates; TSSOP-20 layout fits dense PCB designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4461T-503E/ML | 8-bit resolution (257 taps), same 50 kΩ RAB, identical package and EEPROM features | Higher resolution required for <0.4% step accuracy; slightly higher INL/DNL at full scale | Select when finer granularity outweighs minor linearity trade-off |
| AD5242BRUZ10 | 10 kΩ RAB, 256-tap, SPI interface, no WiperLock, different I/O voltage tolerance | Requires SPI host; lacks nonvolatile recall default and high-voltage command mode | Choose only if SPI is mandatory and 50 kΩ is not required |
Compared with MCP4461T-503E/ML, the MCP4441T-503E/ML offers coarser but more linear 7-bit steps and lower power consumption in active I²C mode; versus AD5242BRUZ10, it delivers superior system integration via I²C, guaranteed nonvolatile recall, and robust 12.5V-tolerant control pins.
Availability
MCP4441T-503E/ML is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply trim, laser diode bias control, and audio channel balance requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MCP4441T-503E/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 Inc. is a leading provider of microcontrollers, analog components, and Flash-IP solutions, headquartered in Chandler, Arizona.
The MCP444X family is designed for precision analog control in harsh environments, emphasizing nonvolatile configuration retention, extended temperature operation, and robust digital interface reliability for industrial and automotive applications.
FAQ
What is the RAB resistance tolerance for MCP4441T-503E/ML?
The MCP4441T-503E/ML has a nominal RAB resistance of 50 kΩ with a tolerance of ±20%, as specified in the DS22265A datasheet. This tolerance applies across the full operating temperature range (-40°C to +125°C) and defines the end-to-end resistance between terminals A and B for each of the four potentiometer networks. The actual measured value for a given unit falls within 40 kΩ to 60 kΩ.
Does MCP4441T-503E/ML support rheostat configuration?
Yes, MCP4441T-503E/ML supports rheostat configuration by floating either terminal A or B of any resistor network while connecting the remaining terminal and wiper into the circuit. This mode is explicitly supported per datasheet Note 1 and enables variable resistance applications such as current limiting or bias adjustment without requiring external switches.
How does WiperLock™ technology function on MCP4441T-503E/ML?
WiperLock™ on MCP4441T-503E/ML prevents unintended wiper movement by requiring either a high-voltage pulse (9.0–12.5V) on the HVC/A0 pin or a software command via I²C to unlock wiper updates. Once locked, wiper positions remain fixed even during I²C communication, ensuring stability in noisy or safety-critical analog paths.
What is the maximum I²C clock frequency supported by MCP4441T-503E/ML?
MCP4441T-503E/ML supports I²C clock frequencies up to 3.4 MHz in high-speed mode, provided VDD ≥ 4.5V and bus capacitance ≤ 100 pF. At lower voltages (2.7–5.5V), it operates at 400 kHz (fast mode) or 100 kHz (standard mode), with timing parameters fully compliant to I²C specification across all supported speeds.
Can MCP4441T-503E/ML operate from a 1.8V supply?
No, MCP4441T-503E/ML requires a minimum VDD of 2.7V for full device functionality including resistor network operation and EEPROM access. While the datasheet notes "1.8V to 5.5V – Device Operation" in a general context, the electrical characteristics table specifies that analog performance (RAB, wiper resistance, tempco) and EEPROM write cycles are only guaranteed from 2.7V to 5.5V.
MCP4441T-503E/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):
- 50k
- 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-503E/ML FAQ
1.How can I place an order for MCP4441T-503E/ML through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4441T-503E/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-503E/ML reliable?
The price and inventory of MCP4441T-503E/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-503E/ML is usually 5 days.
3.What payment methods are accepted for MCP4441T-503E/ML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4441T-503E/ML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4441T-503E/ML?
MCP4441T-503E/ML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4441T-503E/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-503E/ML?
For technical support, including MCP4441T-503E/ML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4441T-503E/ML requirements.
6.How does Aetrix verify that MCP4441T-503E/ML is sourced from the original manufacturer or authorized distributors?
All MCP4441T-503E/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-503E/ML meets industry standards.
7.What is the process for return or replacement of MCP4441T-503E/ML?
All MCP4441T-503E/ML units undergo pre-shipment inspection (PSI). If there is an issue with MCP4441T-503E/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-503E/ML part is unused and in its original packaging.
Return procedure for MCP4441T-503E/ML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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