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Microchip Technology MCP4022T-103E/CH
- Part No.:
- MCP4022T-103E/CH
- Manufacturer:
- Microchip Technology
- Category:
- Digital Potentiometers
- Package:
- SOT-23-6
- Datasheet:
-
MCP4022T-103E/CH.pdf
- Description:
- IC DGTL POT 10KOHM 64TAP SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,636
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Product details
Overview
MCP4022T-103E/CH from Microchip Technology is a nonvolatile 6-bit digital rheostat in SOT-23-6 package, offering 10 kΩ nominal resistance (±20%), 64-tap resolution, 75 Ω typical wiper resistance, and WiperLock™ EEPROM write protection. It operates from 2.7V to 5.5V across –40°C to +125°C and is used for precision biasing, sensor calibration, and programmable gain control in industrial instrumentation.
For engineers reviewing the MCP4022T-103E/CH datasheet, MCP4022T-103E/CH pinout, MCP4022T-103E/CH application, or MCP4022T-103E/CH equivalent, key selection criteria include its rheostat-only configuration, high-voltage tolerant U/D inputs (up to 12.5V), low 1 µA static current, and guaranteed monotonicity with ±0.25 LSb DNL at 10 kΩ.
Technical Context
The MCP4022T-103E/CH implements a simple Up/Down (U/D) serial interface without clock or data lines-only CS and U/D pins control wiper position. Its internal EEPROM retains the last wiper setting across power cycles, and WiperLock™ technology secures that value against accidental overwrite using high-voltage programming thresholds (VIHH ≥ 8.5V).
As a rheostat, it connects terminals A and W externally while leaving B floating or grounded; this configuration enables two-terminal variable resistance operation. The device supports up to 1 MHz U/D toggle frequency and achieves ≤2 µs wiper settling time at 10 kΩ with 100 pF load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Resistance | 10 kΩ ±20% - defines full-scale resistance between A and B terminals for rheostat use |
| Wiper Resistance | 75 Ω typical - contributes directly to on-resistance error and signal path loss |
| Resolution | 64 taps - provides 15.625 Ω step size at 10 kΩ, enabling fine-grained analog adjustment |
| Operating Voltage | 2.7V to 5.5V - compatible with standard logic supply rails and battery-powered systems |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Static Current | 1 µA max - enables ultra-low-power standby in always-on sensor conditioning circuits |
| Bandwidth (-3 dB) | 1 MHz - supports AC signal trimming up to audio frequencies in 10 kΩ configuration |
Pinout & Package
SOT-23-6 package with 1.6 mm × 2.9 mm footprint, thermal resistance θJA = 230°C/W, and lead-free (RoHS-compliant) finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select | Active-low enable for U/D counting; high-voltage threshold (≥8.5V) triggers WiperLock™ write mode |
| 2 (VSS) | Ground | Reference node for all analog and digital circuitry; must be low-impedance for stable wiper operation |
| 3 (U/D) | Up/Down Control | Rising edge increments wiper; falling edge decrements; high-voltage tolerant (≤12.5V) |
| 4 (W) | Wiper Terminal | Variable output node; connected internally to resistor ladder tap; 75 Ω typical series resistance |
| 5 (A) | Resistor Terminal A | Fixed end of resistor array; used as input or return path in rheostat configuration |
| 6 (NC) | No Connect | Internally unconnected; must be left floating or tied to VSS per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Nonvolatile Wiper Setting | EEPROM retains last position after power loss-enables "set-and-forget" calibration in field-deployed equipment |
| WiperLock™ Technology | Prevents unintended EEPROM writes via high-voltage U/D command sequence-eliminates need for external write-protect hardware |
| Rheostat-Only Configuration | Dedicated 2-terminal topology simplifies PCB routing vs. potentiometer variants-reduces parasitic capacitance and layout complexity |
| Low Tempco (Ratiometric) | 10 ppm/°C typical-ensures stable voltage division ratio over temperature in feedback loops |
| High-Voltage Digital Inputs | CS and U/D tolerate up to 12.5V-allows direct interface with 5V/12V logic without level-shifting |
Applications
| Industrial Sensor Calibration | Programmable Bias Networks |
|---|---|
Use Scenario: Calibrating offset and gain of RTD or thermocouple front-end amplifiers during manufacturing test. IC Role / Device Role / Timing Role: Rheostat adjusting reference leg resistance in precision instrumentation amplifier feedback network. Use Value: Eliminates manual trim-pot replacement and enables automated calibration with EEPROM-stored coefficients. | Use Scenario: Setting bias points for op-amps, comparators, or ADC reference buffers in multi-channel data acquisition modules. IC Role / Device Role / Timing Role: Two-terminal variable resistance defining DC operating point in analog signal chain. Use Value: Enables software-defined bias tuning without hardware change-supports field firmware updates to compensate aging or drift. |
| Motor Driver Current Sensing | Power Supply Trim Circuits |
Use Scenario: Adjusting shunt-based current sense gain in BLDC motor controllers to match phase current tolerances. IC Role / Device Role / Timing Role: Rheostat in gain-setting resistor divider for current-sense amplifier. Use Value: Provides factory-trimmed accuracy (±0.25 LSb DNL) and retains setting through motor startup surges and thermal cycling. | Use Scenario: Fine-tuning output voltage of isolated DC-DC converters in telecom power supplies. IC Role / Device Role / Timing Role: Adjustable feedback resistor in optocoupler-compensated regulation loop. Use Value: Enables post-production voltage binning and compensates for transformer tolerance without redesigning feedback network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rheostat applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP4024T-103E/CH | SOT-23-5 package; no NC pin; identical 10 kΩ rheostat specs and WiperLock™ | Smaller footprint but lacks NC pin for grounding flexibility; same electrical performance | Select when board space is constrained and NC pin usage is unnecessary |
| AD5160BRJZ-10-RL7 | 6-bit, 10 kΩ, SPI interface (not U/D); 35 ppm/°C tempco; 45 Ω wiper resistance | Requires SPI controller instead of GPIO; higher wiper accuracy but no high-voltage write protection | Select when existing design uses SPI peripherals and lower wiper resistance is critical |
Compared with MCP4024T-103E/CH, the MCP4022T-103E/CH offers an NC pin for improved noise immunity grounding; compared with AD5160BRJZ-10-RL7, it eliminates SPI overhead and adds robust high-voltage write lockout-critical for factory calibration integrity.
Availability
MCP4022T-103E/CH is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable bias networks, and motor driver current sensing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP4022T-103E/CH 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 timing solutions, headquartered in Chandler, Arizona.
The MCP40xx family delivers nonvolatile digital potentiometers optimized for factory calibration, sensor trimming, and analog system tuning-designed specifically for reliability in harsh industrial and automotive environments.
FAQ
What is the exact resistance tolerance and tempco of the MCP4022T-103E/CH?
The MCP4022T-103E/CH has a nominal resistance of 10 kΩ with ±20% initial tolerance. Its absolute tempco is 150 ppm/°C over –40°C to +125°C, while ratiometric tempco is 10 ppm/°C typical-measured as voltage division stability in potentiometer mode. These values are confirmed in DS20001945F, Table 1-1 and Section 3.0.
Does the MCP4022T-103E/CH support true potentiometer (3-terminal) operation?
No-the MCP4022T-103E/CH is configured exclusively as a rheostat. Per Microchip's device matrix and pinout documentation, it lacks internal connection to terminal B for 3-terminal use. Floating B is required for rheostat operation, and B is not bonded out in the SOT-23-6 package for this variant.
How does WiperLock™ protect the EEPROM setting in the MCP4022T-103E/CH?
WiperLock™ requires applying ≥8.5V to the CS pin while toggling U/D to enter write mode-preventing accidental writes from standard 3.3V/5V logic signals. Once locked, the wiper value persists across power cycles until this high-voltage sequence is repeated. This behavior is verified in DS20001945F Sections 1.0 and 5.0.
What is the maximum allowable voltage across terminals A and W in the MCP4022T-103E/CH?
The MCP4022T-103E/CH allows terminal voltages from VSS to VDD + 0.3V. With VDD = 5.5V, the maximum voltage across A–W is therefore 5.8V. Exceeding this risks latch-up or parametric shift, as specified in Absolute Maximum Ratings (DS20001945F, page 2).
Can the MCP4022T-103E/CH be used in a 12V system?
Yes-its digital inputs (CS and U/D) tolerate up to 12.5V, enabling direct interface with 12V logic or microcontroller GPIOs. However, analog terminals (A, W) must remain within VSS to VDD + 0.3V, so VDD must be regulated to ≤5.5V. The MCP4022T-103E/CH itself cannot operate from 12V supply.
MCP4022T-103E/CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- WiperLock™
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Rheostat
- Number of Circuits:
- 1
- Number of Taps:
- 64
- Resistance (Ohms):
- 10k
- Interface:
- Up/Down (U/D, CS)
- Memory Type:
- Non-Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- -
- Tolerance:
- ±20%
- Temperature Coefficient (Typ):
- 150ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-6
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 70
MCP4022T-103E/CH FAQ
1.How can I place an order for MCP4022T-103E/CH through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP4022T-103E/CH 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 MCP4022T-103E/CH reliable?
The price and inventory of MCP4022T-103E/CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP4022T-103E/CH is usually 5 days.
3.What payment methods are accepted for MCP4022T-103E/CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP4022T-103E/CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP4022T-103E/CH?
MCP4022T-103E/CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP4022T-103E/CH 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 MCP4022T-103E/CH?
For technical support, including MCP4022T-103E/CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP4022T-103E/CH requirements.
6.How does Aetrix verify that MCP4022T-103E/CH is sourced from the original manufacturer or authorized distributors?
All MCP4022T-103E/CH 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 MCP4022T-103E/CH meets industry standards.
7.What is the process for return or replacement of MCP4022T-103E/CH?
All MCP4022T-103E/CH units undergo pre-shipment inspection (PSI). If there is an issue with MCP4022T-103E/CH, 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 MCP4022T-103E/CH part is unused and in its original packaging.
Return procedure for MCP4022T-103E/CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCP4022T-103E/CH Tags
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MCP4018T-103E/LT
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