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Microchip Technology MCP4441T-104E/ML
- Part No.:
- MCP4441T-104E/ML
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
MCP4441T-104E/ML.pdf
- Description:
- IC DGTL POT 100KOHM 129TAP 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,164
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Product details
Overview
MCP4441T-104E/ML from Microchip Technology is a 7-bit quad I²C digital potentiometer with nonvolatile EEPROM, 10 kΩ RAB resistance, WiperLock™ technology, and operation from 2.7V to 5.5V. It provides four independent potentiometer channels for precision analog control in sensor calibration, power supply feedback, and LED brightness adjustment.
For engineers reviewing the MCP4441T-104E/ML datasheet, MCP4441T-104E/ML pinout, MCP4441T-104E/ML application, or MCP4441T-104E/ML equivalent, key selection criteria include nonvolatile wiper recall, 75 Ω typical wiper resistance, ±0.5 LSb INL, 129-tap resolution, and support for 3.4 MHz I²C interface speed.
Technical Context
The MCP4441T-104E/ML implements four independent resistor networks, each configurable as potentiometer (three-terminal) or rheostat (two-terminal) via terminal disconnect control. Each channel features volatile and nonvolatile wiper registers, enabling automatic restoration of last-saved settings after power-up.
Its I²C interface supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes with hardware write protection (WP pin) and software-configurable write lock. Brown-out reset triggers below 1.65 V, and high-voltage tolerant inputs (up to 12.5 V) enable split-rail and mixed-voltage system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RAB Resistance | 10 kΩ ±20% - defines full-scale analog range for gain/offset tuning |
| Resolution | 7-bit / 129 taps - enables 0.78% step granularity across full scale |
| Wiper Resistance | 75 Ω typical - minimizes signal path error in low-impedance feedback loops |
| Tempco (Ratiometric) | 15 ppm/°C typical - ensures stable voltage division over temperature in potentiometer mode |
| I²C Speed Support | Up to 3.4 MHz - allows rapid wiper updates in real-time control systems |
| Nonvolatile Memory | 5 × 9-bit EEPROM + NV wiper - retains user settings without external backup power |
| Operating Voltage | 2.7V–5.5V (characterized), 1.8V–5.5V (functional) - compatible with modern low-power MCU rails |
Pinout & Package
Package: 20-pin TSSOP (4.4 mm × 6.5 mm, 0.65 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | 2.7–5.5 V analog/digital core supply; powers internal logic and resistor networks |
| VSS | Ground reference | Common return for all analog and digital circuits; must be low-impedance |
| SCL | I²C clock input | Accepts standard I²C timing; Schmitt-triggered for noise immunity up to 3.4 MHz |
| SDA | I²C bidirectional data | Open-drain output with weak pull-up; supports multi-master arbitration |
| WP | Hardware write protect | Active-low pin; disables all EEPROM and wiper writes when asserted |
| RESET | Asynchronous reset | Forces wipers to POR state (0x40) and clears status registers on falling edge |
| HVC/A0 | High-voltage command / address bit | Enables WiperLock™ at ≥9 V; also serves as LSB of I²C slave address |
| A1 | I²C slave address bit | MSB of 7-bit I²C address; sets device address alongside HVC/A0 |
| P0A–P3B | Resistor network terminals | Four independent A/W/B terminals (12 pins); configurable per-channel as pot or rheostat |
| P0W–P3W | Wiper outputs | Low-resistance sliding contacts; routed internally to TCON registers for terminal disconnect control |
Key Features
| Feature | Design Value |
|---|---|
| WiperLock™ Technology | Prevents accidental wiper changes during operation by locking register access until high-voltage command is applied |
| Automatic NV Recall | Restores last-saved wiper position from EEPROM on power-up-no host initialization required |
| Terminal Disconnect Control | TCON registers allow individual A/W/B terminals to be electrically isolated, enabling true rheostat configuration |
| High-Voltage Tolerant Inputs | HVC/A0, SCL, SDA, WP, RESET tolerate up to 12.5 V-supports direct connection to 5 V, 12 V, or split-rail analog domains |
| Brown-Out Reset | Internal POR/BOR circuit asserts reset below 1.65 V-ensures predictable startup and prevents undefined wiper states |
Applications
| LED Dimming Control | DC-DC Feedback Calibration |
|---|---|
Use Scenario: Precise current regulation for RGB LED strings in automotive interior lighting. IC Role / Device Role / Timing Role: Four-channel potentiometer setting reference voltages for constant-current LED drivers. Use Value: 10 kΩ RAB and 75 Ω wiper resistance minimize gain error; nonvolatile recall preserves user-defined color balance across ignition cycles. | Use Scenario: Factory-trimmed feedback divider for isolated 48 V → 3.3 V DC-DC converter in telecom power supplies. IC Role / Device Role / Timing Role: Replaces mechanical trimpots to set output voltage via I²C during production test and field recalibration. Use Value: 15 ppm/°C ratiometric tempco ensures <±0.1% output drift over –40°C to +125°C; TSSOP-20 footprint fits tight layout constraints. |
| Sensor Signal Conditioning | Audio Channel Balance |
Use Scenario: Offset and gain adjustment for bridge-based pressure sensors in industrial process monitoring. IC Role / Device Role / Timing Role: Two channels used as programmable gain resistors in instrumentation amplifier feedback; two for offset nulling. Use Value: 7-bit resolution (129 taps) provides sufficient granularity for 12-bit ADC systems; ±0.5 LSb INL avoids introducing measurement nonlinearity. | Use Scenario: Independent left/right channel volume control in professional audio mixing consoles. IC Role / Device Role / Timing Role: Quad potentiometer implementing dual stereo attenuation paths with synchronized wiper updates. Use Value: 3.4 MHz I²C enables sub-millisecond wiper repositioning for glitch-free fade transitions; WiperLock™ prevents unintended changes during live performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4461T-104E/ML | 8-bit resolution (257 taps), same 10 kΩ RAB, identical package and feature set | Higher resolution required for <0.4% step accuracy or finer analog tuning | Select when improved granularity outweighs minor increase in EEPROM write time and code complexity |
| AD5242BRUZ10 | 2.7–5.5 V operation, 10 kΩ, 256-tap, I²C interface, but no nonvolatile memory or WiperLock™ | Requires external microcontroller to restore settings; unsuitable for unattended or battery-backed systems | Choose only if host firmware guarantees wiper reload at every power-on and security against spurious writes is not required |
Compared with MCP4461T-104E/ML, the MCP4441T-104E/ML trades resolution for faster EEPROM writes and lower code overhead; versus AD5242BRUZ10, it adds autonomous NV recall and hardware-level write protection-critical for field-deployed equipment where host intervention is unreliable.
Availability
MCP4441T-104E/ML is available at Aetrix Electronics and suitable for LED dimming, DC-DC feedback calibration, sensor signal conditioning, and audio channel balance requiring stable component supply across automotive, industrial, and telecom design cycles.
Supply support for MCP4441T-104E/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 devices, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MCP444X family delivers robust, nonvolatile digital potentiometers for precision analog trimming in harsh environments-designed specifically for applications demanding guaranteed parameter retention, ESD resilience, and extended temperature operation.
FAQ
What is the default wiper position after power-up for the MCP4441T-104E/ML?
The MCP4441T-104E/ML loads its nonvolatile wiper value stored in EEPROM on power-up. If no prior write has occurred, the default is 0x40 (mid-scale for 7-bit operation). This behavior is enabled by the POR/BOR circuit and requires no host intervention-ensuring repeatable startup conditions for the MCP4441T-104E/ML in unattended systems.
Does the MCP4441T-104E/ML support true rheostat configuration?
Yes, the MCP4441T-104E/ML supports true rheostat operation via its Terminal Control (TCON) registers. By disconnecting either terminal A or B per channel, the device functions as a two-terminal variable resistor. This is confirmed in the DS22265A datasheet section "Resistor Network Terminal Disconnect Feature" and applies directly to the MCP4441T-104E/ML's 7-bit potentiometer architecture.
What is the maximum operating temperature range specified for the MCP4441T-104E/ML?
The MCP4441T-104E/ML is rated for operation from –40°C to +125°C ambient temperature, as confirmed in the Absolute Maximum Ratings table (DS22265A-page 3) and Electrical Characteristics summary (DS22265A-page 4). This extended range is fully characterized for all parameters including RAB, wiper resistance, and I²C timing, making the MCP4441T-104E/ML suitable for under-hood automotive and industrial control applications.
Can the MCP4441T-104E/ML be used with a 1.8 V I²C bus?
No-the MCP4441T-104E/ML's I²C interface is not guaranteed functional at 1.8 V. While the device can operate down to 1.8 V for basic functionality (per DS22265A-page 4), I²C timing specifications-including VIH/VIL thresholds and rise/fall times-are only characterized for VDD ≥ 2.7 V. Using 1.8 V I²C risks communication failure; the MCP4441T-104E/ML requires VDD ≥ 2.7 V for reliable I²C operation.
How does WiperLock™ technology work on the MCP4441T-104E/ML?
WiperLock™ on the MCP4441T-104E/ML is activated by applying ≥9.0 V to the HVC/A0 pin, which places the device into high-voltage command mode and locks all wiper and EEPROM registers. Once locked, writes to wiper positions or memory require repeating the high-voltage sequence. This prevents accidental changes during normal 3.3 V/5 V operation and is a hardware-enforced security feature unique to the MCP4441T-104E/ML and related Microchip digital pots.
MCP4441T-104E/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):
- 100k
- 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-104E/ML FAQ
1.How can I place an order for MCP4441T-104E/ML through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4441T-104E/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-104E/ML reliable?
The price and inventory of MCP4441T-104E/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-104E/ML is usually 5 days.
3.What payment methods are accepted for MCP4441T-104E/ML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4441T-104E/ML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4441T-104E/ML?
MCP4441T-104E/ML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4441T-104E/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-104E/ML?
For technical support, including MCP4441T-104E/ML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4441T-104E/ML requirements.
6.How does Aetrix verify that MCP4441T-104E/ML is sourced from the original manufacturer or authorized distributors?
All MCP4441T-104E/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-104E/ML meets industry standards.
7.What is the process for return or replacement of MCP4441T-104E/ML?
All MCP4441T-104E/ML units undergo pre-shipment inspection (PSI). If there is an issue with MCP4441T-104E/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-104E/ML part is unused and in its original packaging.
Return procedure for MCP4441T-104E/ML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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