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Microchip Technology MCP41010T-E/SN
- Part No.:
- MCP41010T-E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP41010T-E/SN.pdf
- Description:
- IC DGTL POT 10KOHM 256TAP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,249
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Product details
Overview
MCP41010T-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 serves as a programmable rheostat or voltage divider in precision gain/offset calibration circuits for sensor signal conditioning.
For engineers reviewing the MCP41010T-E/SN datasheet, MCP41010T-E/SN pinout, MCP41010T-E/SN application, or MCP41010T-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 PCB layout constraints for analog-digital separation.
Technical Context
The MCP41010T-E/SN implements an 8-bit linear wiper register controlling a segmented resistor array between terminals PA0, PB0, and PW0. Its SPI interface uses CS-active-low framing, rising-edge SCK sampling on SI, and supports software shutdown that opens PA0 and shorts PW0 to PB0 - preserving register state during low-power operation.
It lacks hardware SHDN or RS pins (exclusive to MCP42XXX dual variants), and does not support daisy-chaining (no SO pin). Wiper reset occurs automatically at power-up to code 80h (mid-scale), and all DC/AC specifications - including 1 MHz –3dB bandwidth and 2 µs settling time - are validated for the 10 kΩ version across the industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Resistance | 10 kΩ ±20% at +25°C - defines full-scale analog impedance range for gain-setting networks. |
| Resolution | 8-bit (256 taps) - enables 0.39% step resolution for fine analog tuning in closed-loop systems. |
| INL / DNL | ±1 LSB max - guarantees monotonicity and ≤0.4% absolute linearity error in voltage-divider mode. |
| Wiper Resistance | 52 Ω typical (VDD = 5.5V, code 00h) - contributes fixed series offset in rheostat configurations. |
| Supply Current | ≤1 µA static, 500 µA active max - enables battery-powered sensor nodes with multi-year standby life. |
| 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 control, automotive under-hood (non-critical), and HVAC applications. |
Pinout & Package
Package: 8-pin SOIC (E/SN suffix), 3.9 mm × 4.9 mm body, 1.27 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | SPI chip select input | Active-low enable; gates SCK/SI activity and reduces dynamic current draw when high. |
| 2 - SCK | SPI clock input | Rising-edge sampled; Schmitt-triggered for noise immunity on noisy industrial PCBs. |
| 3 - SI | SPI serial data input | Accepts 16-bit command/data frame; no SO pin - single-device SPI topology only. |
| 4 - VSS | Ground reference | Analog/digital common return; requires dedicated low-impedance plane for <10 µV noise floor. |
| 5 - PA0 | Potentiometer terminal A | High-side resistive endpoint; open during software shutdown to isolate upstream circuitry. |
| 6 - PW0 | Wiper output | Programmable tap point; connects to PB0 during shutdown, enabling zero-resistance bypass path. |
| 7 - PB0 | Potentiometer terminal B | Low-side resistive endpoint; tied to VSS or signal return; remains active in all modes. |
| 8 - VDD | Power supply | 2.7–5.5V analog/digital rail; requires 0.1 µF ceramic bypass capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Software shutdown mode | Opens PA0 and shorts PW0 to PB0 - eliminates current path through resistor array while retaining wiper register value for instant recovery. |
| Power supply rejection | ≤0.0035 %/% sensitivity - ensures stable wiper voltage despite ±10% VDD ripple in unregulated supplies. |
| Low wiper capacitance | 5.6 pF (PW0) - minimizes high-frequency signal leakage and preserves >1 MHz bandwidth in AC-coupled gain stages. |
| Reset-on-power-up | Auto-loads code 80h (mid-scale) - prevents undefined output state and ensures repeatable startup behavior in safety-critical systems. |
| Schmitt-trigger inputs | VIH = 0.7VDD, VIL = 0.3VDD - tolerates slow-rising clock/control signals from GPIOs or long PCB traces. |
Applications
| Instrumentation Gain Calibration | Laser Diode Bias Control |
|---|---|
Use Scenario: Programmable gain stage in a 24-bit precision ADC front-end for strain-gauge bridge measurements. IC Role / Device Role / Timing Role: Configurable voltage-divider setting reference voltage for instrumentation amplifier, updated once per sensor reading cycle. Use Value: Enables factory-trimmed gain accuracy within ±0.1% using stored calibration coefficients, eliminating manual potentiometer adjustment. |
Use Scenario: Closed-loop bias current control for fiber-optic transceiver laser diodes requiring stable optical output power. IC Role / Device Role / Timing Role: Rheostat-mode current-limiting element in the feedback path of a constant-current op-amp driver. Use Value: Allows real-time thermal compensation via MCU lookup table, maintaining ±2% optical power stability over –40°C to +85°C. |
| Audio Volume Adjustment | DC Power Supply Trim |
Use Scenario: Digital volume control in professional audio mixer channel strips with mute/solo functionality. IC Role / Device Role / Timing Role: Dual-rail voltage divider attenuating line-level analog signals; updated synchronously with UI button press. Use Value: Eliminates mechanical wear and channel imbalance; achieves <–95 dB crosstalk between adjacent channels. |
Use Scenario: Factory-programmable output voltage trim for isolated DC-DC converters in telecom power modules. IC Role / Device Role / Timing Role: Precision rheostat in feedback network of TL431-based shunt regulator, set once during production test. Use Value: Achieves ±0.5% output voltage accuracy after calibration, replacing 0.1% metal-film trimpots and reducing test time by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5170BRMZ-10 | I²C interface, 256-tap, 10 kΩ, 3.3V-only supply (2.7–3.6V), no shutdown mode. | Lacks SPI compatibility and software shutdown; requires I²C master and cannot achieve <1 µA static current. | Select when system already uses I²C bus and ultra-low power is secondary to interface consolidation. |
| MCP42010-I/P | Dual-channel, 14-pin PDIP, includes hardware SHDN/RS pins and SO for daisy-chaining. | Provides two independent pots in one package but requires larger footprint and additional control logic. | Select when dual-pot functionality or hardware reset/shutdown is required; not drop-in compatible due to pin count and SO presence. |
Compared with AD5170BRMZ-10 and MCP42010-I/P, the MCP41010T-E/SN offers SPI-native integration with minimal external components, guaranteed sub-µA static current, and SOIC-8 footprint - making it optimal for space-constrained, single-pot, low-power industrial designs where I²C is unavailable or dual channels are unnecessary.
Availability
MCP41010T-E/SN is available at Aetrix Electronics and suitable for instrumentation gain calibration, laser diode bias control, audio volume adjustment, and DC power supply trim requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MCP41010T-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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and memory products, with a focus on industrial, automotive, and consumer applications.
The MCP41XXX family was designed specifically for replacing mechanical potentiometers in precision analog control loops - emphasizing low power, high linearity, SPI simplicity, and robust operation across extended temperature ranges.
FAQ
What is the maximum clock frequency supported by the MCP41010T-E/SN SPI interface?
The MCP41010T-E/SN supports up to 10 MHz SPI clock frequency at VDD = 5V. Timing parameters including tSU (40 ns setup), tHD (10 ns hold), and tDO (80 ns SO propagation delay) are specified across the full operating voltage and temperature range, ensuring reliable communication with modern microcontrollers even under marginal signal integrity conditions.
Does the MCP41010T-E/SN have a hardware shutdown pin?
No, the MCP41010T-E/SN does not include a hardware SHDN pin. Shutdown is implemented exclusively via software command, which opens PA0 and connects PW0 to PB0. Hardware shutdown with dedicated SHDN pin is only available on dual-channel MCP42XXX variants such as MCP42010.
What is the wiper resistance specification for the MCP41010T-E/SN at 2.7V supply?
At VDD = 2.7V and IW = 1 mA (code 00h), the MCP41010T-E/SN wiper resistance is specified as 73 Ω (typical) to 125 Ω (max). This value directly impacts insertion loss and THD in audio or sensor signal paths, and must be included in total system resistance calculations for precision applications.
Can the MCP41010T-E/SN be used in rheostat mode with only two terminals connected?
Yes, the MCP41010T-E/SN supports true rheostat mode: connect PA0 and PB0 to circuit endpoints, and use PW0 as the variable terminal. The unused terminal (typically PB0) must be tied to PW0 to minimize parasitic capacitance and ensure monotonic behavior - as confirmed in Figure 2-26 and Section 4.1.1 of the datasheet.
Is the MCP41010T-E/SN pin-compatible with other MCP41XXX variants like MCP41050 or MCP41100?
Yes, all MCP41XXX variants including MCP41010T-E/SN, MCP41050T-E/SN, and MCP41100T-E/SN share identical SOIC-8 pinout and SPI command structure. Only the nominal resistance differs (10 kΩ, 50 kΩ, 100 kΩ), allowing board-level substitution without layout changes - provided system impedance requirements accommodate the resistance value shift.
MCP41010T-E/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 ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 73
MCP41010T-E/SN FAQ
1.How can I place an order for MCP41010T-E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP41010T-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 MCP41010T-E/SN reliable?
The price and inventory of MCP41010T-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 MCP41010T-E/SN is usually 5 days.
3.What payment methods are accepted for MCP41010T-E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP41010T-E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP41010T-E/SN?
MCP41010T-E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP41010T-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 MCP41010T-E/SN?
For technical support, including MCP41010T-E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP41010T-E/SN requirements.
6.How does Aetrix verify that MCP41010T-E/SN is sourced from the original manufacturer or authorized distributors?
All MCP41010T-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 MCP41010T-E/SN meets industry standards.
7.What is the process for return or replacement of MCP41010T-E/SN?
All MCP41010T-E/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP41010T-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 MCP41010T-E/SN part is unused and in its original packaging.
Return procedure for MCP41010T-E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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