My Inquiry
My Account
Microchip Technology MCP4441T-104E/ST
- Part No.:
- MCP4441T-104E/ST
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MCP4441T-104E/ST.pdf
- Description:
- IC DGT POT 100KOHM 129TP 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCP4441T-104E/ST from Microchip Technology is a 7-bit quad I²C digital potentiometer with nonvolatile EEPROM, 10 kΩ RAB resistance, WiperLock™ technology, and automatic recall of wiper settings. It operates from 2.7V to 5.5V, supports I²C up to 3.4 MHz, and delivers 129-tap resolution for precision analog control in embedded sensor calibration and power supply feedback loops.
For engineers reviewing the MCP4441T-104E/ST datasheet, MCP4441T-104E/ST pinout, MCP4441T-104E/ST application, or MCP4441T-104E/ST equivalent, key selection criteria include nonvolatile wiper storage, 75 Ω typical wiper resistance, ±0.5 LSb INL, 15 ppm ratiometric tempco, and TSSOP-20 package compatibility with industrial temperature range (–40°C to +125°C).
Technical Context
The MCP4441T-104E/ST integrates four independent 7-bit resistor networks (129 taps) configured as potentiometers, each with dedicated A/W/B terminals and terminal disconnect via TCON registers. Its I²C interface supports Standard (100 kHz), Fast (400 kHz), and High-Speed (3.4 MHz) modes, with hardware/software write protection and brown-out reset at 1.65 V.
Nonvolatile memory includes 5 general-purpose 9-bit EEPROM locations and persistent wiper storage; WiperLock™ prevents unintended wiper changes after configuration. The device features high-voltage tolerant digital inputs (up to 12.5 V), internal weak pull-ups on all digital pins except SDA/SCL, and supports split-rail operation with rail-to-rail resistor terminal voltage range (VSS to VDD).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RAB Resistance | 10 kΩ ±20% - sets full-scale analog gain/attenuation range in feedback networks |
| Resolution | 7-bit / 129 taps - enables 0.78% step granularity for fine analog tuning |
| Wiper Resistance | 75 Ω typical - minimizes insertion error in low-impedance signal paths |
| Ratiometric Tempco | 15 ppm/°C typical - ensures stable voltage-divider ratio over –40°C to +125°C |
| I²C Speed Support | 100 kHz / 400 kHz / 3.4 MHz - allows real-time wiper updates in fast-control-loop systems |
| Supply Voltage Range | 2.7V to 5.5V (specified), 1.8V to 5.5V (operational) - compatible with mixed-voltage MCU interfaces |
| Nonvolatile Memory | EEPROM wiper + 5 × 9-bit GP locations - retains calibrated settings across power cycles without host intervention |
Pinout & Package
TSSOP-20 package: 20-pin thin shrink small-outline package with 0.65 mm pitch, optimized for automated assembly and thermal performance in space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | 2.7–5.5 V analog/digital supply; powers resistor networks and logic core |
| 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 or host rail |
| SCL | I²C clock line | Input-only clock; synchronizes all register reads/writes and EEPROM operations |
| WP | Hardware write protect | Active-low pin; disables all volatile/EEPROM writes when pulled low |
| 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 12.5 V for WiperLock™ enable/disable; also serves as LSB of I²C address |
| A1 | I²C address bit | MSB of 7-bit I²C slave address; configures one of four possible addresses |
| P0A–P0B, P1A–P1B, P2A–P2B, P3A–P3B | Resistor network terminals | Four independent potentiometer A/B ends; each pair defines RAB = 10 kΩ |
| P0W–P3W | Wiper outputs | Four analog wiper nodes; connect to feedback points or signal paths requiring variable division |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile wiper storage | Automatically recalls last-set wiper positions at power-on, eliminating host initialization overhead |
| WiperLock™ technology | Prevents accidental I²C writes to wiper registers after configuration, enhancing system reliability |
| Terminal disconnect via TCON | Software-controlled open-circuit mode for individual resistor networks, enabling dynamic reconfiguration |
| High-voltage tolerant inputs | HVC/A0, WP, RESET accept up to 12.5 V - simplifies level-shifting in mixed-supply systems |
| Brown-out reset | Internal POR/BOR triggers below 1.65 V - ensures predictable state during power ramp-up |
Applications
| LED Brightness Control | Power Supply Feedback Tuning |
|---|---|
Use Scenario: Adjustable constant-current LED driver with programmable brightness levels across ambient temperature variations. IC Role / Device Role / Timing Role: Digital potentiometer replacing mechanical trimmer in current-sense feedback path of DC-DC converter. Use Value: 15 ppm ratiometric tempco maintains consistent LED output over –40°C to +125°C; nonvolatile storage retains user-set dimming level after power loss. | Use Scenario: Programmable output voltage adjustment for isolated DC-DC converters in telecom power modules. IC Role / Device Role / Timing Role: Precision voltage divider in optocoupler feedback loop of secondary-side regulation circuit. Use Value: 75 Ω wiper resistance minimizes gain error; 129-tap resolution enables 10 mV output steps at 5 V nominal setting. |
| Sensor Signal Conditioning | Industrial DAC Offset Calibration |
Use Scenario: Gain and offset trimming for bridge-based pressure sensors in harsh-environment transmitters. IC Role / Device Role / Timing Role: Dual-potentiometer configuration (one for gain, one for offset) in instrumentation amplifier front-end. Use Value: Independent TCON control allows dynamic disconnection of unused networks; 5 kΩ–100 kΩ RAB options match common sensor bridge impedances. | Use Scenario: Factory-trimmed zero-error correction for 12-bit DACs in PLC analog output modules. IC Role / Device Role / Timing Role: Nonvolatile offset compensation element in DAC output buffer stage. Use Value: EEPROM stores calibrated offset value per unit; WiperLock™ prevents field corruption during firmware updates or noise events. |
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/ST | 8-bit resolution (257 taps), same RAB, EEPROM, WiperLock™, and package | Higher resolution required for sub-0.4% step accuracy; slightly higher supply current (250 µA vs. 2.5 µA inactive) | Select when finer analog control granularity is needed and additional EEPROM endurance (1M cycles) is critical |
| AD5242BRUZ10 | 2-channel, 256-tap, I²C, no EEPROM, 10 kΩ, TSSOP-16, ±30% RAB tolerance | Lacks nonvolatile storage and WiperLock™; requires host to reload wiper on every power cycle | Choose for cost-sensitive, single-supply (2.7–5.5 V) designs where calibration persistence is handled externally |
Compared with MCP4441T-104E/ST, the MCP4461T-104E/ST offers higher resolution but consumes more active current, while the AD5242BRUZ10 reduces channel count and eliminates EEPROM-making it suitable only where host-managed calibration is acceptable and board space is constrained.
Availability
MCP4441T-104E/ST is available at Aetrix Electronics and suitable for industrial sensor calibration, power supply feedback tuning, LED driver brightness control, and embedded DAC offset correction requiring stable component supply across extended temperature ranges.
Supply support for MCP4441T-104E/ST 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 connectivity solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MCP444X family is designed for precision analog control in embedded systems requiring nonvolatile configuration, robust I²C communication, and operation across extended industrial temperatures (–40°C to +125°C).
FAQ
What is the RAB resistance tolerance and tempco specification for MCP4441T-104E/ST?
The MCP4441T-104E/ST has an RAB resistance of 10 kΩ with ±20% initial tolerance. Its ratiometric temperature coefficient is 15 ppm/°C typical (measured at mid-scale, –20°C to +70°C), ensuring stable voltage-divider behavior across temperature. Absolute tempco is 50 ppm/°C typical for rheostat use.
Does MCP4441T-104E/ST support I²C clock stretching or multi-master bus configurations?
No, the MCP4441T-104E/ST does not support clock stretching and is designed as an I²C slave-only device. It complies with standard I²C protocol timing for 100 kHz, 400 kHz, and 3.4 MHz modes but lacks arbitration or master capability-requiring a dedicated I²C master controller in the system.
How does WiperLock™ function on MCP4441T-104E/ST, and can it be disabled?
WiperLock™ on MCP4441T-104E/ST prevents unintended writes to wiper registers after configuration. It is enabled/disabled via I²C command using the HVC/A0 pin at high voltage (≥9.0 V). Once locked, wiper registers remain read-only until explicitly unlocked-no hardware reset is required to disable it.
What is the maximum current rating for the resistor terminals (PxA, PxW, PxB) of MCP4441T-104E/ST?
Each resistor terminal (A, W, B) of the MCP4441T-104E/ST supports a maximum continuous current of ±2.5 mA. The maximum RAB current is 1.38 mA (at 5.5 V, RAB = 4 kΩ min); derating applies for higher resistances-e.g., 0.069 mA at 100 kΩ minimum RAB.
Can MCP4441T-104E/ST operate with VDD = 1.8 V, and what functionality is retained?
MCP4441T-104E/ST operates down to 1.8 V, but only serial interface functionality is guaranteed per datasheet. Analog characteristics-including RAB tolerance, wiper resistance, and tempco-are specified only from 2.7 V to 5.5 V. At 1.8 V, I²C communication remains functional, but resistor network performance is not characterized.
MCP4441T-104E/ST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- WiperLock™
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- 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-TSSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 75
MCP4441T-104E/ST FAQ
1.How can I place an order for MCP4441T-104E/ST through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4441T-104E/ST 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/ST reliable?
The price and inventory of MCP4441T-104E/ST 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/ST is usually 5 days.
3.What payment methods are accepted for MCP4441T-104E/ST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4441T-104E/ST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4441T-104E/ST?
MCP4441T-104E/ST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4441T-104E/ST 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/ST?
For technical support, including MCP4441T-104E/ST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4441T-104E/ST requirements.
6.How does Aetrix verify that MCP4441T-104E/ST is sourced from the original manufacturer or authorized distributors?
All MCP4441T-104E/ST 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/ST meets industry standards.
7.What is the process for return or replacement of MCP4441T-104E/ST?
All MCP4441T-104E/ST units undergo pre-shipment inspection (PSI). If there is an issue with MCP4441T-104E/ST, 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/ST part is unused and in its original packaging.
Return procedure for MCP4441T-104E/ST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP4441T-104E/ST Tags
-
MCP4018T-103E/LT
Microchip Technology
-
MCP4018T-503E/LT
Microchip Technology
-
MCP4011T-103E/SN
Microchip Technology
-
MCP4018T-104E/LT
Microchip Technology
-
MCP4017T-503E/LT
Microchip Technology
-
MCP4018T-502E/LT
Microchip Technology
-
MCP4017T-103E/LT
Microchip Technology
-
MCP4531T-103E/MF
Microchip Technology
-
MCP4021T-202E/SN
Microchip Technology
-
MCP4023T-103E/CH
Microchip Technology
-
MCP4022T-503E/CH
Microchip Technology
-
MCP4551T-502E/MS
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
