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Microchip Technology MCP33111D-05-E/MN
- Part No.:
- MCP33111D-05-E/MN
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MCP33111D-05-E/MN.pdf
- Description:
- IC ADC 12BIT SAR 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,514
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Product details
Overview
MCP33111D-05-E/MN from Microchip Technology is a 12-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 73.9 dBFS SNR and ±0.12 LSB INL for precision battery voltage monitoring in automotive BMS.
For engineers reviewing the MCP33111D-05-E/MN datasheet, MCP33111D-05-E/MN pinout, MCP33111D-05-E/MN application, or MCP33111D-05-E/MN equivalent, key selection criteria include its differential input architecture, SPI-compatible 3-wire interface (up to 100 MHz SCLK), self-calibration capability, low-power acquisition mode, and TDFN-10/MSOP-10 packaging for space-constrained high-reliability systems.
Technical Context
The MCP33111D-05-E/MN uses a SAR architecture with internal clock generation-decoupling conversion timing from SPI clock rate-and features automatic power-up calibration plus on-demand recalibration for offset, gain, and linearity errors. Its differential input supports full-scale range of ±VREF (up to ±5.1V) with 84 dB CMRR and 70 dB PSRR.
It enters low-current Standby mode between conversions, where sampling capacitors remain connected to inputs and analog circuitry is powered down. Conversion is triggered by the rising edge of CNVST, and output data is available on SDO after tCNV (max 1.3 µs), with no latency in data delivery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function for unambiguous digital representation of analog input. |
| Sample Rate | 500 kSPS - enables real-time capture of signals up to ~200 kHz (Nyquist-limited) in motor control or SMPS feedback loops. |
| Differential Input Range | ±VREF (2.5V–5.1V) - supports high common-mode rejection in noisy environments like EV battery stacks or industrial sensors. |
| Standby Current | ~0.8 µA - allows integration into always-on monitoring circuits without compromising system battery life. |
| INL / DNL | ±0.12 LSB / ±0.06 LSB - ensures sub-LSB linearity critical for accurate voltage ratio measurements in precision BMS cell balancing. |
| SNR / SFDR | 73.9 dBFS / 99.3 dBc at 10 kHz - provides >12-bit effective resolution for clean signal digitization in EMI-prone automotive domains. |
| Operating Temp | -40°C to +125°C (AEC-Q100 Grade 1) - validated for under-hood and traction battery applications without derating. |
Pinout & Package
Package: 3 mm × 3 mm TDFN-10 (exposed pad) and MSOP-10 - both RoHS-compliant, thermally enhanced options suitable for high-density automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: AIN+ | Differential analog input positive | Accepts high-side signal in true differential pair; referenced to AIN− for noise rejection. |
| 2: AVDD | Analog supply voltage | 1.8V regulated supply for core ADC circuitry; requires 1 µF ceramic decoupling. |
| 3: AIN− | Differential analog input negative | Completes differential pair; common-mode voltage must stay within 0–VREF per datasheet. |
| 4: SDI | SPI data input | Accepts recalibrate command and configuration bits; Schmitt-triggered for noise immunity. |
| 5: SCLK | SPI serial clock | Supports up to 100 MHz; timing-critical for data readout during Standby mode. |
| 6: GND | Analog/digital ground reference | Single ground plane recommended; connects to exposed pad in TDFN for thermal and noise performance. |
| 7: SDO | SPI data output | Tri-state output presenting 12-bit result MSB-first; valid within 9.5 ns of SCLK low edge. |
| 8: DVIO | Digital I/O supply | 1.7–5.5V flexible interface voltage enabling direct connection to 1.8V/3.3V/5V MCUs without level shifters. |
| 9: VREF | External reference input | 2.5–5.1V precision reference; supplies full-scale range and impacts SNR/ENOB directly. |
| 10: CNVST | Conversion start input | Edge-triggered (rising) command initiating sample-and-hold; also serves as chip select in 3-wire SPI. |
Key Features
| Feature | Design Value |
|---|---|
| No latency output | Data appears on SDO immediately after conversion completes-enables deterministic real-time control loop timing. |
| Self-calibration | Automatic at power-up and user-initiated via SDI command-maintains ±0.12 LSB INL across temperature and VREF drift. |
| Differential input architecture | Rejects common-mode noise up to 84 dB-critical for accurate sensing in high-voltage battery strings with shared ground noise. |
| Wide DVIO range (1.7–5.5V) | Eliminates need for external level shifters when interfacing with diverse host MCUs (e.g., PIC32MZ, ARM Cortex-M7). |
| AEC-Q100 Grade 1 qualification | Validated for automotive use including engine bay and battery pack locations-no additional qualification required for Tier 1 designs. |
Applications
| Electric Vehicle Battery Monitoring | Industrial Motor Control Feedback |
|---|---|
Use Scenario: Real-time cell voltage measurement across 12–100+ series-connected Li-ion cells in traction battery packs. IC Role / Device Role / Timing Role: High-precision differential ADC acquiring isolated cell voltages with 12-bit resolution and 500 kSPS throughput. Use Value: Enables accurate state-of-charge estimation and cell balancing decisions with ±0.12 LSB INL and AEC-Q100 reliability. | Use Scenario: Sampling phase currents and DC bus voltage in servo drives and inverters for closed-loop FOC control. IC Role / Device Role / Timing Role: Differential SAR ADC providing synchronized, low-latency current/voltage samples to MCU ADC trigger logic. Use Value: Delivers 73.9 dBFS SNR and 99.3 dBc SFDR at 10 kHz input-supporting <1% THD in torque ripple-sensitive applications. |
| Switch-Mode Power Supply Sensing | Medical Portable Diagnostic Equipment |
Use Scenario: Monitoring output voltage and inductor current in digitally controlled AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: Precision ADC capturing fast transient events with 2 µs cycle time and no pipeline delay. Use Value: 500 kSPS sample rate and 1.3 µs max conversion time allow >10× oversampling of 50 kHz switching frequencies. | Use Scenario: Digitizing biopotential signals (ECG, EEG) in handheld diagnostic devices requiring low power and high SNR. IC Role / Device Role / Timing Role: Low-noise, low-power ADC operating from coin-cell or rechargeable battery with minimal thermal dissipation. Use Value: 0.8 µA standby current extends battery life; 73.9 dBFS SNR meets IEC 60601-2-27 clinical accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7142IRUGT | 12-bit, 1 MSPS, I²C interface, integrated PGA, 1.8V supply only | Targets ultra-low-power sensor nodes; lacks differential input and AEC-Q100 rating | Select for I²C-based compact sensor hubs-not for automotive or high-noise differential sensing. |
| AD7476ARTZ-REEL7 | 12-bit, 1 MSPS, single-ended input, SPI, 2.35–5.25V supply, no internal calibration | Requires external reference and calibration; lower SNR (70 dBFS) and no AEC-Q100 validation | Choose for cost-sensitive industrial controls where differential rejection and automotive qualification are not required. |
Compared with ADS7142IRUGT and AD7476ARTZ-REEL7, the MCP33111D-05-E/MN uniquely combines differential input, AEC-Q100 Grade 1 qualification, on-chip self-calibration, and flexible DVIO-making it the only option qualified for automotive battery monitoring without design compromises.
Availability
MCP33111D-05-E/MN is available at Aetrix Electronics and suitable for electric vehicle battery management systems, industrial motor control feedback loops, and switch-mode power supply sensing requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for MCP33111D-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 MCP331xxD family delivers high-speed, high-accuracy SAR ADCs optimized for automotive and industrial applications demanding AEC-Q100 qualification, low power, and robust differential input performance in harsh environments.
FAQ
What is the maximum SPI clock frequency supported by the MCP33111D-05-E/MN?
The MCP33111D-05-E/MN supports an SPI SCLK frequency up to 100 MHz, with timing specifications defined for DVIO ≥1.7V. At 100 MHz, the minimum SCLK period is 10 ns. This high-speed interface enables rapid data readout during Standby mode without limiting the 500 kSPS throughput capability of the MCP33111D-05-E/MN itself.
Does the MCP33111D-05-E/MN require an external reference voltage?
Yes, the MCP33111D-05-E/MN requires an external reference voltage applied to the VREF pin, with a specified range of 2.5V to 5.1V. The device does not include an internal reference; VREF directly sets the full-scale differential input range (±VREF) and critically impacts SNR, ENOB, and absolute accuracy. A stable, low-noise reference source is mandatory for achieving the datasheet's 73.9 dBFS SNR and ±0.12 LSB INL performance in the MCP33111D-05-E/MN.
How does the self-calibration feature work in the MCP33111D-05-E/MN?
The MCP33111D-05-E/MN performs automatic self-calibration for offset, gain, and linearity errors at power-up. Users can also initiate on-demand recalibration via a command sent through the SDI pin. Calibration takes approximately 500–650 ms and restores optimal performance if environmental conditions-such as reference voltage settling or temperature shifts-degrade initial accuracy. This ensures sustained ±0.12 LSB INL over the full -40°C to +125°C range without external calibration hardware in the MCP33111D-05-E/MN.
What package options are available for the MCP33111D-05-E/MN?
The MCP33111D-05-E/MN is offered in two RoHS-compliant packages: the 3 mm × 3 mm TDFN-10 with exposed thermal pad and the MSOP-10. Both packages support the same pinout and electrical specifications. The TDFN-10 offers superior thermal resistance (θJA = 68°C/W vs. 202°C/W for MSOP-10), making it preferred for high-temperature automotive applications where power dissipation must be minimized in the MCP33111D-05-E/MN.
Is the MCP33111D-05-E/MN suitable for automotive applications?
Yes, the MCP33111D-05-E/MN is AEC-Q100 qualified for Temperature Grade 1 (-40°C to +125°C), making it suitable for automotive applications including battery management systems, motor control, and powertrain sensing. Its differential input architecture, 84 dB CMRR, and robust ESD protection (≥2 kV HBM) further validate its use in electric vehicles and under-hood electronics where noise immunity and long-term reliability are essential for the MCP33111D-05-E/MN.
MCP33111D-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:
- 12
- 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
MCP33111D-05-E/MN FAQ
1.How can I place an order for MCP33111D-05-E/MN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP33111D-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 MCP33111D-05-E/MN reliable?
The price and inventory of MCP33111D-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 MCP33111D-05-E/MN is usually 5 days.
3.What payment methods are accepted for MCP33111D-05-E/MN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP33111D-05-E/MN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP33111D-05-E/MN?
MCP33111D-05-E/MN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP33111D-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 MCP33111D-05-E/MN?
For technical support, including MCP33111D-05-E/MN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP33111D-05-E/MN requirements.
6.How does Aetrix verify that MCP33111D-05-E/MN is sourced from the original manufacturer or authorized distributors?
All MCP33111D-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 MCP33111D-05-E/MN meets industry standards.
7.What is the process for return or replacement of MCP33111D-05-E/MN?
All MCP33111D-05-E/MN units undergo pre-shipment inspection (PSI). If there is an issue with MCP33111D-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 MCP33111D-05-E/MN part is unused and in its original packaging.
Return procedure for MCP33111D-05-E/MN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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