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Microchip Technology MCP33131D-05-E/MN
- Part No.:
- MCP33131D-05-E/MN
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MCP33131D-05-E/MN.pdf
- Description:
- IC ADC 16BIT SAR 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,325
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Product details
Overview
MCP33131D-05-E/MN from Microchip Technology is a 16-bit, 500 kSPS fully differential successive approximation register (SAR) analog-to-digital converter with no missing codes, ultra-low standby current (0.8 µA), and AEC-Q100 Grade 1 qualification (-40°C to +125°C). It operates with 1.8V AVDD, 1.7–5.5V DVIO, and 2.5–5.1V external reference, delivering 91.3 dBFS SNR and ±2 LSB INL for high-precision battery management and motor control systems.
For engineers reviewing the MCP33131D-05-E/MN datasheet, MCP33131D-05-E/MN pinout, MCP33131D-05-E/MN application, or MCP33131D-05-E/MN equivalent, key selection criteria include differential input full-scale range (±VREF), SPI-compatible 3-wire interface with up to 100 MHz SCLK, self-calibration capability, and TDFN-10/MSOP-10 package compatibility in automotive and industrial data acquisition designs.
Technical Context
The MCP33131D-05-E/MN uses an internal SAR clock independent of the SPI serial clock, enabling deterministic conversion timing (tACQ = 700–800 ns, tCNV = 1200–1300 ns). Its differential input architecture supports ±VREF full-scale range with 84 dB CMRR and 70 dB PSRR, while on-demand and power-up self-calibration corrects offset, gain, and linearity errors without host intervention.
It features no-latency output, where conversion results are available on SDO immediately after CNVST deassertion, and supports wide DVIO (1.7–5.5V) to interface directly with PIC32 and other microcontrollers without level shifters. The device enters ultra-low-power Standby mode (<1 µA) between conversions, with sampling capacitors connected to AIN+ and AIN− during acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement. |
| Sample Rate | 500 kSPS - enables real-time capture of fast transients in EV battery cell monitoring and motor phase current sensing. |
| SNR / SINAD | 91.3 dBFS / 91.0 dBFS at fIN = 10 kHz, VREF = 5V - supports >14.8 ENOB for high-fidelity signal reconstruction. |
| INL / DNL | ±2 LSB / ±0.8 LSB - ensures accurate end-point linearity critical for closed-loop control feedback paths. |
| Supply Voltages | AVDD = 1.8V, DVIO = 1.7–5.5V, VREF = 2.5–5.1V - allows flexible system-level power domain partitioning and mixed-voltage interfacing. |
| Current Consumption | 1.4 mA during conversion, 0.8 µA in Standby - extends battery life in portable test equipment and wireless sensor nodes. |
| Operating Temperature | -40°C to +125°C (AEC-Q100 Grade 1) - validated for under-hood automotive and industrial motor drive environments. |
Pinout & Package
Available in Pb-free 3 mm × 3 mm TDFN-10 and MSOP-10 packages. Both variants share identical pin functions and electrical behavior; TDFN-10 offers lower thermal resistance (θJA = 68°C/W) for high-density thermal designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ | Differential analog input positive | Accepts voltage from -VREF to +VREF relative to AIN−; requires matched PCB routing for optimal CMRR. |
| AIN− | Differential analog input negative | Reference node for AIN+; common-mode voltage must stay within 0V to VREF per datasheet specification. |
| AVDD | Analog supply | 1.8V regulated supply; requires 1 µF ceramic decoupling capacitor to minimize noise coupling into SAR core. |
| VREF | External reference input | Defines full-scale range (±VREF); requires 10 µF tantalum capacitor for stability during dynamic load changes. |
| SDI | SPI data input | Receives recalibrate command and configuration bits; Schmitt-triggered for noise immunity on slow edges. |
| SCLK | SPI clock input | Supports up to 100 MHz operation; timing margins tighten as DVIO decreases (min 16 ns period at 1.7V). |
| SDO | SPI data output | Three-state output presenting 16-bit result MSB-first; valid within 9.5 ns of SCLK low edge (DVIO ≥ 3.3V). |
| CNVST | Conversion start / chip select | Rising edge initiates acquisition; falling edge enables SDO output and triggers next acquisition cycle. |
| DVIO | Digital I/O supply | Sets logic thresholds for all digital pins; enables direct interfacing with 1.8V, 3.3V, or 5V hosts without level shifters. |
| GND | Analog/digital ground | Single ground plane required; separation from noisy digital returns prevents degradation of 91.3 dBFS SNR performance. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency output architecture | Conversion result appears on SDO immediately after CNVST deassertion-eliminates pipeline delay in real-time control loops. |
| On-demand self-calibration | User-triggered recalibration (1024 SCLK cycles) restores offset/gain/linearity accuracy after reference voltage settling or thermal drift. |
| Differential input with 84 dB CMRR | Rejects common-mode noise from motor drives or switching power supplies, preserving signal integrity in electric vehicle BMS. |
| Ultra-low standby current (0.8 µA) | Enables microamp-level system sleep modes in portable medical instruments and battery-powered test gear. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including traction inverters and onboard chargers operating across -40°C to +125°C. |
Applications
| Electric Vehicle Battery Management | Industrial Motor Control |
|---|---|
Use Scenario: Monitoring individual Li-ion cell voltages in 400V+ battery packs with <1 mV absolute accuracy. IC Role / Device Role / Timing Role: High-precision differential ADC capturing cell voltage at 500 kSPS with synchronized sampling across multiple channels. Use Value: Enables precise state-of-charge estimation and cell balancing decisions using 16-bit resolution and ±2 LSB INL over temperature. | Use Scenario: Sampling motor phase currents in servo drives with minimal latency and high noise immunity. IC Role / Device Role / Timing Role: Differential front-end ADC converting isolated current sense signals with 84 dB CMRR and no output latency. Use Value: Supports fast current-loop bandwidths (>10 kHz) by eliminating pipeline delay and maintaining 91.3 dBFS SNR in noisy EMI environments. |
| Medical Patient Monitoring | Switch-Mode Power Supply Feedback |
Use Scenario: Digitizing low-amplitude biopotential signals (ECG, EEG) in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-power, high-SNR ADC acquiring differential biosignals with 0.8 µA standby current and 91.3 dBFS dynamic range. Use Value: Extends battery runtime while preserving diagnostic-grade signal fidelity through 16-bit resolution and self-calibration stability. | Use Scenario: Measuring output voltage and current in digitally controlled AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Precision ADC feeding real-time PID control algorithms with deterministic 2 µs conversion cycle time (tCYC). Use Value: Improves regulation accuracy and transient response by providing stable, calibrated 16-bit feedback data across line/load/temperature variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 MSPS, single-ended input only; no integrated self-calibration; requires external reference buffer. | Lacks differential input and on-demand recalibration-less suitable for noisy motor control or unbuffered sensor interfaces. | Select when single-ended signal chain simplification outweighs need for differential noise rejection and field recalibration. |
| MCP33131D-10-E/MN | Same 16-bit resolution and pinout, but 1 Msps sample rate and higher 1.6 mA conversion current. | Better suited for applications requiring higher throughput (e.g., multi-channel simultaneous sampling), at cost of increased power. | Choose for time-critical systems needing faster acquisition; MCP33131D-05-E/MN preferred for power-constrained 500 kSPS use cases. |
Compared with ADS8860IDRCT, MCP33131D-05-E/MN provides differential input and embedded self-calibration for robustness in harsh environments, while versus MCP33131D-10-E/MN it trades 500 kSPS throughput for 0.2 mA lower conversion current-critical for thermally constrained or battery-operated deployments.
Availability
MCP33131D-05-E/MN is available at Aetrix Electronics and suitable for electric vehicle battery management systems, industrial motor control drives, and portable medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCP33131D-05-E/MN 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, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MCP331x1D family delivers high-speed, high-accuracy SAR ADCs optimized for automotive-grade data acquisition in battery management, motor control, and power conversion-designed for AEC-Q100 compliance and seamless integration with Microchip's PIC32 and dsPIC ecosystems.
FAQ
What is the maximum SPI clock frequency supported by the MCP33131D-05-E/MN?
The MCP33131D-05-E/MN supports an SPI SCLK frequency up to 100 MHz, with timing margins dependent on DVIO voltage: minimum SCLK period is 10 ns at DVIO ≥ 3.3V, 12 ns at ≥ 2.3V, and 16 ns at ≥ 1.7V. This allows high-speed data readout without compromising setup/hold timing in demanding real-time systems.
Does the MCP33131D-05-E/MN require an external reference voltage?
Yes, the MCP33131D-05-E/MN requires an external reference voltage (VREF) in the range of 2.5V to 5.1V to define its differential full-scale input range (±VREF). The device does not include an internal reference; VREF must be supplied with adequate decoupling (10 µF tantalum recommended) to maintain 91.3 dBFS SNR performance.
How does the self-calibration function work in the MCP33131D-05-E/MN?
The MCP33131D-05-E/MN performs automatic self-calibration at power-up and supports on-demand recalibration via SPI command. The process takes 500–650 ms and corrects offset, gain, and linearity errors. Recalibration is triggered by sending a specific 16-bit command sequence over SDI, requiring 1024 SCLK cycles to complete-restoring accuracy after environmental shifts or reference settling.
What package options are available for the MCP33131D-05-E/MN?
The MCP33131D-05-E/MN is offered in two RoHS-compliant packages: the 3 mm × 3 mm TDFN-10 (θJA = 68°C/W) and the MSOP-10 (θJA = 202°C/W). Both share identical pinout and electrical specifications; TDFN-10 is preferred for thermally demanding applications due to superior thermal performance and smaller footprint.
Is the MCP33131D-05-E/MN suitable for automotive applications?
Yes, the MCP33131D-05-E/MN is AEC-Q100 qualified for Grade 1 operation (-40°C to +125°C) and designed specifically for automotive applications including battery management systems, motor control, and powertrain sensors. Its differential input, high CMRR, and on-chip self-calibration ensure reliable performance in electric vehicles' electromagnetically noisy and thermally variable environments.
MCP33131D-05-E/MN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 500k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 10-TDFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
MCP33131D-05-E/MN FAQ
1.How can I place an order for MCP33131D-05-E/MN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP33131D-05-E/MN 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 MCP33131D-05-E/MN reliable?
The price and inventory of MCP33131D-05-E/MN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP33131D-05-E/MN is usually 5 days.
3.What payment methods are accepted for MCP33131D-05-E/MN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP33131D-05-E/MN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP33131D-05-E/MN?
MCP33131D-05-E/MN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP33131D-05-E/MN 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 MCP33131D-05-E/MN?
For technical support, including MCP33131D-05-E/MN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP33131D-05-E/MN requirements.
6.How does Aetrix verify that MCP33131D-05-E/MN is sourced from the original manufacturer or authorized distributors?
All MCP33131D-05-E/MN 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 MCP33131D-05-E/MN meets industry standards.
7.What is the process for return or replacement of MCP33131D-05-E/MN?
All MCP33131D-05-E/MN units undergo pre-shipment inspection (PSI). If there is an issue with MCP33131D-05-E/MN, 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 MCP33131D-05-E/MN part is unused and in its original packaging.
Return procedure for MCP33131D-05-E/MN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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