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Microchip Technology MCP41010-E/SN
- Part No.:
- MCP41010-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP41010-E/SN.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,438
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Product details
Overview
MCP41010-E/SN from Microchip Technology is a single-channel, 256-tap digital potentiometer with 10 kΩ nominal resistance, SPI™ interface (mode 0,0 and 1,1), ±1 LSB max INL/DNL, and operates from 2.7V to 5.5V supply. It functions as a programmable rheostat or voltage divider in precision analog trimming applications such as sensor calibration and power supply feedback control.
For engineers reviewing the MCP41010-E/SN datasheet, MCP41010-E/SN pinout, MCP41010-E/SN application, or MCP41010-E/SN equivalent, key selection criteria include wiper resistance (52 Ω typ. at VDD = 5.5V), static supply current (≤1 µA), industrial temperature range (–40°C to +85°C), and SOIC-8 package compatibility with legacy PCB layouts.
Technical Context
The MCP41010-E/SN implements an 8-bit wiper register controlling a linear resistor array between terminals PA0, PB0, and PW0. Its SPI interface uses CS-active-low framing, rising-edge SCK sampling, and Schmitt-triggered digital inputs for noise immunity in mixed-signal environments.
It supports both rheostat mode (A–W or B–W) and potentiometer mode (A–B with W as adjustable tap), with wiper reset to mid-scale (0x80) on power-up and no hardware shutdown or reset pins-unlike dual-channel MCP42XXX variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Resistance | 10 kΩ ±20% at +25°C - defines full-scale analog adjustment range in voltage divider or rheostat configurations. |
| Resolution | 8-bit (256 taps) - enables 0.39% step resolution for fine-grained gain/offset tuning in closed-loop systems. |
| INL / DNL | ±1 LSB max - ensures monotonicity and predictable linearity across all codes, critical for calibration accuracy. |
| Wiper Resistance | 52 Ω typical (VDD = 5.5V, code 0x00) - contributes directly to total path resistance and must be included in precision gain calculations. |
| Supply Current (Static) | 1 µA maximum - enables ultra-low-power operation in battery-backed or always-on sensor front-ends. |
| Operating Voltage | 2.7V to 5.5V - supports direct interfacing with 3.3V and 5V microcontrollers without level-shifting. |
| Temperature Range | –40°C to +85°C - qualified for industrial-grade embedded systems including motor drives and HVAC controls. |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), 150 mil width, JEDEC MS-012AC compliant. Pin 1 marked by notch or dot; pin numbering counterclockwise from top-left corner when viewed from top with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select Input | Active-low SPI frame sync; gates internal clock and data latching-must be pulsed low before each command. |
| 2 (SCK) | Serial Clock Input | Rising-edge sampled SPI clock; Schmitt-triggered for robust timing in noisy environments. |
| 3 (SI) | Serial Data Input | MSB-first SPI data input; accepts 16-bit command+data frames per transaction. |
| 4 (VSS) | Ground Reference | Analog/digital common return; requires low-impedance connection to minimize offset errors. |
| 5 (PA0) | Potentiometer Terminal A | High-side resistor endpoint; connects to VDD or signal source in voltage divider mode. |
| 6 (PW0) | Wiper Output | Adjustable tap point; output impedance varies with code and wiper resistance (52 Ω typ.). |
| 7 (PB0) | Potentiometer Terminal B | Low-side resistor endpoint; tied to ground or reference in most rheostat configurations. |
| 8 (VDD) | Positive Supply | Single 2.7–5.5V rail powering both digital logic and resistor array; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| SPI Interface (Mode 0,0 & 1,1) | Enables direct connection to standard MCU SPI peripherals without custom firmware drivers or protocol translation. |
| ±1 LSB Max INL/DNL | Guarantees monotonic response and <0.4% absolute linearity error-sufficient for 10-bit system-level accuracy. |
| 1 µA Static Supply Current | Reduces standby power in always-on instrumentation nodes; eliminates need for external power gating circuitry. |
| Mid-Scale Power-Up Default (0x80) | Ensures known, safe initial state for feedback loops-prevents transient overvoltage or uncontrolled startup behavior. |
| Industrial Temperature Range | Validates performance across full operating envelope of factory automation and outdoor electronics without derating. |
Applications
| Laser Diode Bias Control | DC-DC Converter Feedback Trimming |
|---|---|
Use Scenario: Precise adjustment of laser diode bias current in fiber-optic transceivers to maintain constant optical output power across temperature. IC Role / Device Role / Timing Role: Rheostat-mode current-setting element in the laser driver's ISET loop, replacing mechanical trimpots subject to drift and vibration. Use Value: 10 kΩ resistance and 52 Ω wiper enable stable 10–100 mA bias ranges with <±0.5% long-term drift-meeting GR-468 reliability requirements. |
Use Scenario: Dynamic recalibration of voltage feedback dividers in isolated DC-DC converters to compensate for aging or thermal drift of output sensing resistors. IC Role / Device Role / Timing Role: Potentiometer-mode programmable divider setting VOUT reference point; updated via SPI during factory calibration or field firmware updates. Use Value: 8-bit resolution allows 0.39% step granularity-enabling ±0.5% output voltage accuracy over 20-year product lifetime without manual re-trimming. |
| Sensor Signal Conditioning | Audio Volume Control |
Use Scenario: Offset and gain adjustment in bridge-based pressure or load-cell amplifier stages to null zero-point error and scale full-scale output. IC Role / Device Role / Timing Role: Dual-role potentiometer: terminal A–B sets gain (with op-amp), wiper–B sets offset injection point in instrumentation amplifier topology. Use Value: ±1 LSB INL ensures calibrated sensor outputs remain within 12-bit ADC quantization limits across –40°C to +85°C ambient. |
Use Scenario: Digitally controlled analog volume attenuation in professional audio mixers where click-free transitions and low THD are mandatory. IC Role / Device Role / Timing Role: Rheostat-mode variable attenuator between line-level source and preamp input; wiper resistance minimizes channel crosstalk. Use Value: 10 kΩ value matches standard audio impedance targets; 256-step resolution provides smooth, perceptually linear volume sweeps without audible stepping artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5171BRMZ-10 | I²C interface only; 64-tap resolution; 10 kΩ; 2.7–5.5V; ±30% RAB tolerance; no mid-scale power-up default. | Lacks SPI compatibility and deterministic startup state-requires host firmware to initialize before use. | Select when I²C bus resources are constrained and lower resolution suffices for coarse gain staging. |
| MCP42010-I/P | Dual-channel 10 kΩ device in 14-pin PDIP; includes hardware SHDN and RS pins; daisy-chain capable; same INL/DNL specs. | Provides redundant channel for differential sensing or stereo audio; adds shutdown/reset functionality not present in MCP41010-E/SN. | Select when board space permits larger package and dual-channel operation or hardware reset/shutdown is required. |
Compared with AD5171BRMZ-10 and MCP42010-I/P, the MCP41010-E/SN offers SPI-native integration, guaranteed mid-scale startup, and optimal footprint for single-channel trimming-making it preferred for cost-sensitive, space-constrained industrial analog interfaces.
Availability
MCP41010-E/SN is available at Aetrix Electronics and suitable for laser diode bias control, DC-DC converter feedback trimming, and sensor signal conditioning requiring stable component supply across industrial temperature grades and long production lifecycles.
Supply support for MCP41010-E/SN 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 microcontroller, analog, and Flash-IP solutions, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP41XXX series was designed specifically for high-accuracy, low-power analog trimming in industrial and automotive subsystems-emphasizing SPI simplicity, parametric stability, and drop-in replacement capability for mechanical potentiometers.
FAQ
What is the wiper resistance specification for MCP41010-E/SN?
The MCP41010-E/SN has a typical wiper resistance of 52 Ω at VDD = 5.5V and code 0x00, with a maximum of 100 Ω under those conditions. At VDD = 2.7V, wiper resistance rises to 73–125 Ω. This value directly impacts total path resistance in rheostat mode and must be accounted for in precision gain calculations. The MCP41010-E/SN datasheet specifies this parameter in the DC Characteristics table for the 10 kΩ version.
Does MCP41010-E/SN support hardware shutdown or reset functionality?
No, the MCP41010-E/SN does not include hardware SHDN or RS pins-those features are exclusive to the dual-channel MCP42XXX family. The MCP41010-E/SN relies solely on software-controlled shutdown via SPI command, which opens the A terminal and connects W to B. Power-up always resets the wiper to mid-scale (0x80), but there is no dedicated pin to force this state externally.
What SPI modes are supported by MCP41010-E/SN?
The MCP41010-E/SN supports SPI Mode 0,0 (CPOL = 0, CPHA = 0) and Mode 1,1 (CPOL = 1, CPHA = 1). Data is sampled on the rising edge of SCK in Mode 0,0 and on the falling edge in Mode 1,1. The chip select (CS) must be asserted low before clocking data, and the 16-bit frame consists of command bits followed by 8-bit wiper data. This dual-mode support ensures compatibility with diverse microcontroller SPI peripherals.
Can MCP41010-E/SN operate from a 3.3V supply?
Yes, the MCP41010-E/SN is fully specified for operation from 2.7V to 5.5V, including standard 3.3V systems. All electrical characteristics-including INL/DNL (±1 LSB), supply current (≤1 µA static), and digital input thresholds (VIH = 0.7×VDD, VIL = 0.3×VDD)-are guaranteed across this range. Its Schmitt-triggered inputs ensure reliable communication even with marginal signal integrity on 3.3V SPI buses.
Is MCP41010-E/SN pin-compatible with other devices in the MCP41XXX family?
Yes, all MCP41XXX single-channel variants-including MCP41050-E/SN (50 kΩ) and MCP41100-E/SN (100 kΩ)-share identical SOIC-8 pinout and SPI command structure. Only the nominal resistance value differs; all timing, register mapping, and functional behavior (e.g., power-up default, shutdown command) are identical. This enables one PCB layout to support multiple resistance grades via BOM change.
MCP41010-E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 1
- Number of Taps:
- 256
- Resistance (Ohms):
- 10k
- Interface:
- SPI
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 800ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 73
MCP41010-E/SN FAQ
1.How can I place an order for MCP41010-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP41010-E/SN 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 MCP41010-E/SN reliable?
The price and inventory of MCP41010-E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP41010-E/SN is usually 5 days.
3.What payment methods are accepted for MCP41010-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP41010-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP41010-E/SN?
MCP41010-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP41010-E/SN 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 MCP41010-E/SN?
For technical support, including MCP41010-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP41010-E/SN requirements.
6.How does Aetrix verify that MCP41010-E/SN is sourced from the original manufacturer or authorized distributors?
All MCP41010-E/SN 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 MCP41010-E/SN meets industry standards.
7.What is the process for return or replacement of MCP41010-E/SN?
All MCP41010-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP41010-E/SN, 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 MCP41010-E/SN part is unused and in its original packaging.
Return procedure for MCP41010-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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