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Microchip Technology MCP41010T-I/SN
- Part No.:
- MCP41010T-I/SN
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP41010T-I/SN.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:60,951
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Product details
Overview
MCP41010T-I/SN from Microchip Technology is a single-channel, 256-position digital potentiometer with 10 kΩ nominal resistance, SPI™ serial interface (mode 0,0), ±1 LSB max INL/DNL, and wiper reset to mid-scale (80h) on power-up. It operates from 2.7V to 5.5V and supports industrial temperature range (–40°C to +85°C), enabling precise analog voltage division in programmable gain amplifiers and sensor calibration circuits.
For engineers reviewing the MCP41010T-I/SN datasheet, MCP41010T-I/SN pinout, MCP41010T-I/SN application, or MCP41010T-I/SN equivalent, key selection considerations include its 10 kΩ end-to-end resistance, 8-bit resolution, software shutdown capability, low 1 µA static supply current, and SOIC-8 package compatibility with legacy mechanical potentiometer footprints.
Technical Context
The MCP41010T-I/SN implements a linear 256-tap resistor array controlled via standard SPI interface with Schmitt-triggered CS, SCK, and SI inputs. Its wiper register updates synchronously on CS falling edge after 16-bit command/data transfer, and hardware reset is not supported - only software-initiated shutdown and power-on reset to code 80h.
It functions exclusively in single-potentiometer configuration with terminals PA0, PB0, and PW0 forming a three-terminal voltage divider or two-terminal rheostat. No daisy-chaining, dual-channel operation, RS, SHDN, or SO pins are present - all features exclusive to MCP42XXX family members.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Resistance | 10 kΩ ±20% at +25°C; defines full-scale analog adjustment range in gain control or bias setting |
| Resolution | 8-bit (256 positions); enables 0.39% step resolution for fine-grained analog tuning |
| INL / DNL | ±1 LSB max; ensures monotonic response and predictable linearity across entire wiper sweep |
| Supply Voltage | 2.7V to 5.5V; compatible with both 3.3V and 5V microcontroller I/O domains without level shifting |
| Static Supply Current | ≤1 µA at VDD = 5.5V; supports ultra-low-power battery-operated systems during idle periods |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade embedded control and automotive under-hood auxiliary circuits |
| Wiper Resistance | 52 Ω typical at VDD = 5.5V, code 00h; limits minimum achievable resistance and affects low-end accuracy |
Pinout & Package
Package: 8-pin SOIC (SOIC-8, 3.9 mm width), RoHS-compliant, surface-mount. Pin mapping validated per Microchip DS11195C, Table 3-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | SPI chip select input | Active-low enable; gates SCK/SI activity and triggers wiper register update on falling edge |
| 2 - SCK | SPI clock input | Rising-edge sampling of SI; Schmitt-triggered for noise immunity on noisy PCBs |
| 3 - SI | SPI data input | Accepts 16-bit command/data frame (write to wiper register or shutdown command) |
| 4 - VSS | Ground reference | Return path for analog and digital currents; must be low-impedance for INL stability |
| 5 - PA0 | Potentiometer terminal A | High-side resistor endpoint; connects to VDD or signal source in voltage divider mode |
| 6 - PW0 | Wiper output | Programmable tap point; delivers intermediate voltage between PA0 and PB0 |
| 7 - PB0 | Potentiometer terminal B | Low-side resistor endpoint; typically tied to VSS or signal sink in divider/rheostat use |
| 8 - VDD | Power supply | Single 2.7–5.5V rail powers digital logic and resistor array; bypass capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| 256-position linear taper | Enables precise 0.39% step resolution for closed-loop calibration without mechanical wear |
| SPI interface (mode 0,0) | Direct interoperability with most 8/16-bit MCUs using standard firmware drivers, no custom protocol |
| Software shutdown mode | Disconnects PA0 and shorts PW0–PB0, reducing system leakage and enabling zero-current standby |
| Mid-scale power-on reset (80h) | Guarantees known startup state (5 kΩ wiper position), eliminating undefined analog output at boot |
| Low 1 µA static current | Extends battery life in portable instrumentation and remote sensor nodes beyond 10 years |
Applications
| Programmable Gain Amplifier | Sensor Offset Calibration |
|---|---|
Use Scenario: Adjusting feedback resistor ratio in op-amp circuits to dynamically set gain from 1× to 100×. IC Role / Device Role / Timing Role: MCP41010T-I/SN serves as digitally controlled feedback element; updated via SPI before signal acquisition cycle. Use Value: Eliminates manual trimpots and enables auto-calibration routines, improving production test throughput by >40%. |
Use Scenario: Compensating thermal drift in bridge-based pressure sensors by injecting adjustable offset voltage. IC Role / Device Role / Timing Role: MCP41010T-I/SN acts as precision voltage divider on reference leg; wiper position tuned during factory calibration. Use Value: Achieves <±0.1% full-scale offset correction across –40°C to +85°C, meeting ISO 13849 SIL-2 requirements. |
| LED Brightness Control | Audio Volume Adjustment |
Use Scenario: Setting current-limiting resistance in constant-current LED driver ICs for dimming without PWM flicker. IC Role / Device Role / Timing Role: MCP41010T-I/SN configures analog current reference; updated infrequently (e.g., user button press). Use Value: Provides smooth, silent analog dimming with 256-step granularity-superior EMI profile vs. PWM-based solutions. |
Use Scenario: Replacing mechanical volume pots in professional audio mixers requiring remote digital control. IC Role / Device Role / Timing Role: MCP41010T-I/SN forms ground-referenced attenuator network; wiper position synchronized to UI encoder rotation. Use Value: Delivers click-free attenuation with <0.1 dB step consistency, verified per AES48 grounding standards. |
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, 64-tap, 10 kΩ, ±30% resistance tolerance, no shutdown mode | Lacks SPI compatibility and software shutdown; requires I²C host and external power gating | Select when I²C bus is already dominant and coarse 64-step resolution suffices |
| MCP42010-I/P | Dual-channel, 14-pin PDIP, includes hardware SHDN/RS pins and SO for daisy-chaining | Requires PCB redesign (14-pin footprint), adds channel matching (<1%) but doubles cost for single-channel need | Select only if dual independent pots or hardware reset/shutdown are mandatory system requirements |
Compared with AD5171BRMZ-10 and MCP42010-I/P, the MCP41010T-I/SN offers optimal balance of SPI-native control, 256-step precision, SOIC-8 drop-in replacement capability, and integrated shutdown-making it the preferred choice for cost-sensitive, space-constrained single-pot designs.
Availability
MCP41010T-I/SN is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration systems, LED current control, and audio volume adjustment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MCP41010T-I/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 microcontrollers, analog components, and connectivity solutions, serving industrial, automotive, and consumer markets since 1989.
The MCP41XXX series was designed specifically for replacing mechanical potentiometers in automated calibration, gain-setting, and bias-adjustment applications where reliability, programmability, and small footprint are critical.
FAQ
What is the maximum clock frequency supported by the MCP41010T-I/SN SPI interface?
The MCP41010T-I/SN supports up to 10 MHz SPI clock frequency at VDD = 5V, with minimum high/low times of 40 ns each. At lower supply voltages (e.g., 3.3V), timing margins tighten; design validation at target clock rate and VDD is recommended. The MCP41010T-I/SN does not support daisy-chaining, so timing constraints are simpler than dual-channel MCP42XXX variants.
Does the MCP41010T-I/SN have a hardware reset pin?
No, the MCP41010T-I/SN does not include an RS (Reset) pin. Reset functionality is limited to power-on initialization, which loads code 80h (mid-scale) into the wiper register. For forced mid-scale reset during operation, users must issue a SPI write command to load 0x80 - the MCP41010T-I/SN lacks dedicated hardware reset capability.
Can the MCP41010T-I/SN be used in rheostat mode?
Yes, the MCP41010T-I/SN supports rheostat mode by connecting either PA0 or PB0 to the wiper PW0, leaving the other terminal unconnected or tied to a fixed potential. In this configuration, it functions as a two-terminal variable resistor with 10 kΩ nominal value and ≤100 Ω wiper resistance, suitable for current-limiting or bias adjustment applications.
What is the wiper resistance specification for the MCP41010T-I/SN?
The MCP41010T-I/SN has a typical wiper resistance of 52 Ω at VDD = 5.5V and IW = 1 mA (code 00h), with a maximum of 100 Ω under those conditions. At VDD = 2.7V, wiper resistance rises to 125 Ω max. This on-resistance directly impacts minimum achievable resistance and low-end linearity in rheostat configurations.
Is the MCP41010T-I/SN pin-compatible with mechanical potentiometer footprints?
Yes, the MCP41010T-I/SN in SOIC-8 package maps PA0, PB0, and PW0 to three adjacent pins (5, 7, 6), enabling direct replacement of 3-terminal through-hole or surface-mount trimmer pots with minimal PCB modification. Its compact 3.9 mm body width fits standard 0.3" DIP socket footprints when adapted with a simple breakout board.
MCP41010T-I/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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 ~ 85°C
- Resistance - Wiper (Ohms) (Typ):
- 73
MCP41010T-I/SN FAQ
1.How can I place an order for MCP41010T-I/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP41010T-I/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 MCP41010T-I/SN reliable?
The price and inventory of MCP41010T-I/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP41010T-I/SN is usually 5 days.
3.What payment methods are accepted for MCP41010T-I/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP41010T-I/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP41010T-I/SN?
MCP41010T-I/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP41010T-I/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 MCP41010T-I/SN?
For technical support, including MCP41010T-I/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP41010T-I/SN requirements.
6.How does Aetrix verify that MCP41010T-I/SN is sourced from the original manufacturer or authorized distributors?
All MCP41010T-I/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 MCP41010T-I/SN meets industry standards.
7.What is the process for return or replacement of MCP41010T-I/SN?
All MCP41010T-I/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP41010T-I/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 MCP41010T-I/SN part is unused and in its original packaging.
Return procedure for MCP41010T-I/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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