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Microchip Technology MCP33111D-10T-I/MS
- Part No.:
- MCP33111D-10T-I/MS
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP33111D-10T-I/MS.pdf
- Description:
- IC ADC 12BIT SAR 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,236
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Product details
Overview
MCP33111D-10T-I/MS from Microchip Technology is a 12-bit, 1 Msps 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 ±0.12 LSB INL and 73.9 dBFS SNR at 10 kHz input for high-accuracy battery management and motor control sensing.
For engineers reviewing the MCP33111D-10T-I/MS datasheet, MCP33111D-10T-I/MS pinout, MCP33111D-10T-I/MS application, or MCP33111D-10T-I/MS equivalent, this page provides verified technical context, package-specific pin functions, real-world use-value in automotive and industrial systems, and two validated alternative parts with documented performance trade-offs.
Technical Context
The MCP33111D-10T-I/MS uses an internal SAR clock independent of SPI SCLK, enabling deterministic 1 Msps throughput with 700 ns conversion time and 250 ns input acquisition. Its differential input supports full-scale range of ±VREF (up to ±5.1V), with CMRR of 84 dB and PSRR of 70 dB ensuring robustness against common-mode noise and supply ripple.
Self-calibration on power-up and on-demand corrects offset, gain, and linearity errors; it completes in 500–650 ms and maintains stability across temperature. The device enters low-power Standby mode between conversions, where sampling capacitors remain connected to inputs and total current drops to <1 µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function and eliminates code skips in closed-loop control feedback paths. |
| Sample Rate | 1 Msps - enables real-time capture of fast transients in EV battery cell monitoring and switch-mode power supply loop control. |
| INL / DNL | ±0.12 LSB / ±0.06 LSB - ensures sub-0.03% integral linearity error for precision voltage measurement in medical instrumentation. |
| SNR / SFDR | 73.9 dBFS / 99.3 dBc at 10 kHz - supports >12-bit effective resolution in noisy industrial environments with minimal filtering overhead. |
| Supply Voltages | AVDD = 1.8V, DVIO = 1.7–5.5V, VREF = 2.5–5.1V - allows direct interface with 1.8V/3.3V/5V host MCUs without level shifters. |
| Operating Temp | -40°C to +125°C (AEC-Q100 Grade 1) - qualified for under-hood automotive applications and industrial motor drives. |
| Standby Current | 0.8 µA typical - extends battery life in portable test equipment and wireless sensor nodes with intermittent sampling. |
Pinout & Package
Package: MSOP-10 (3 mm × 3 mm, 0.5 mm pitch), Pb-free, RoHS-compliant. Thermal resistance θJA = 202°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: AIN+ | Differential analog input positive | Accepts signal up to VREF+0.1V; paired with AIN- for true differential measurement rejecting common-mode noise. |
| 2: AVDD | Analog supply voltage | 1.8V regulated supply for internal analog circuitry; requires 1 µF ceramic decoupling capacitor. |
| 3: AIN- | Differential analog input negative | Completes differential pair; full-scale range is -VREF to +VREF when referenced to VREF. |
| 4: SDI | SPI data input | Accepts command bits (e.g., recalibrate); Schmitt-triggered for noise immunity on 1.7–5.5V DVIO rails. |
| 5: SCLK | SPI serial clock | Supports up to 100 MHz; timing-critical for data readout during Standby mode after CNVST deassertion. |
| 6: GND | Analog/digital ground | Single ground plane required; separates analog and digital return paths internally but shares pin. |
| 7: SDO | SPI data output | Three-state, high-impedance when CNVST high; outputs 12-bit MSB-first data synchronized to SCLK. |
| 8: DVIO | Digital I/O interface voltage | Sets logic thresholds for SDI/SCLK/SDO; independent of AVDD, enabling mixed-voltage system interfacing. |
| 9: VREF | External reference voltage input | 2.5–5.1V precision reference; supplies full-scale range and determines LSB size (e.g., 2.44 mV at 5V). |
| 10: CNVST | Conversion start input | Edge-triggered (rising edge); initiates sample-and-hold and conversion; also serves as chip select in 3-wire SPI. |
Key Features
| Feature | Design Value |
|---|---|
| No latency output | Data available immediately after CNVST deassertion - eliminates pipeline delay critical for real-time control loops. |
| On-demand self-calibration | User-initiated recalibration via SPI command restores offset/gain/linearity accuracy after environmental shifts (e.g., VREF settling drift). |
| Differential input architecture | Rejects common-mode noise up to 84 dB - essential for measuring small signals across noisy ground planes in motor drives. |
| Wide DVIO range (1.7–5.5V) | Direct interface with PIC32, ARM Cortex-M, and legacy 5V microcontrollers without external level shifters or voltage translators. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including battery management and ADAS sensor front-ends operating at 125°C junction temperature. |
Applications
| Electric Vehicle BMS | Industrial Motor Control |
|---|---|
|
Use Scenario: Monitoring individual Li-ion cell voltages in high-voltage traction battery packs under thermal stress and EMI-rich under-hood conditions. IC Role / Device Role / Timing Role: Precision differential ADC capturing 12-bit cell voltage samples at 1 Msps for state-of-charge estimation and cell balancing decisions. Use Value: ±0.12 LSB INL and 84 dB CMRR ensure <0.01% measurement error despite ground bounce and switching noise from inverters. |
Use Scenario: Sampling phase currents and DC bus voltage in servo drives for field-oriented control (FOC) algorithms requiring tight current regulation. IC Role / Device Role / Timing Role: High-speed SAR ADC providing synchronized, low-latency current feedback to FPGA or MCU PWM controllers. Use Value: No-latency output and 700 ns conversion enable sub-microsecond current loop closure, improving torque ripple suppression. |
| Portable Test Equipment | Medical Patient Monitoring |
|
Use Scenario: Handheld oscilloscope or multimeter requiring battery-powered operation with >100 kSPS sampling and >12-bit effective resolution. IC Role / Device Role / Timing Role: Low-power ADC acquiring analog waveforms while minimizing quiescent current draw during idle periods. Use Value: 0.8 µA standby current extends single-cell Li-ion battery life to >100 hours between charges in always-on measurement modes. |
Use Scenario: ECG front-end amplifying and digitizing microvolt-level cardiac signals in compact, low-noise diagnostic devices. IC Role / Device Role / Timing Role: Differential-input ADC rejecting 50/60 Hz mains interference and amplifier offset drift in analog signal chain. Use Value: 73.9 dBFS SNR at 10 kHz and 25 MHz -3dB input bandwidth preserve signal fidelity without oversampling or complex digital filtering. |
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 |
|---|---|---|---|
| MCP33111D-05T-I/MS | 500 kSPS max sample rate; lower conversion current (1.4 mA vs. 1.6 mA); identical resolution, INL, and package. | Better suited for lower-bandwidth applications like temperature sensing or slow-varying sensor monitoring where power efficiency outweighs speed. | Select when system throughput ≤500 kSPS suffices and average power must be minimized (e.g., energy-harvesting nodes). |
| ADS7953IRHBT | 12-bit, 1 MSPS, but uses parallel interface (not SPI); higher supply current (2.5 mA active); 32-pin QFN vs. 10-pin MSOP. | Targeted at high-throughput industrial PLC modules where parallel bus bandwidth and multi-channel integration are prioritized over board space. | Choose only if existing design uses parallel ADC interface and PCB layout cannot accommodate SPI-based compact footprint. |
Compared with MCP33111D-05T-I/MS, the MCP33111D-10T-I/MS delivers 2× throughput at marginally higher current, making it optimal for dynamic signal capture; versus ADS7953IRHBT, it offers 70% smaller footprint and SPI simplicity at the cost of interface flexibility.
Availability
MCP33111D-10T-I/MS 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 automotive-grade temperature ranges and long production lifecycles.
Supply support for MCP33111D-10T-I/MS 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, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MCP331xxD family is designed for high-precision, low-power, automotive-qualified data acquisition in space-constrained systems - emphasizing differential input integrity, self-calibration reliability, and seamless MCU interoperability.
FAQ
What is the maximum SPI clock frequency supported by the MCP33111D-10T-I/MS?
The MCP33111D-10T-I/MS supports SCLK frequencies up to 100 MHz, with timing validated for 10 ns period (100 MHz) at DVIO ≥ 3.3V. At lower DVIO levels (e.g., 1.8V), maximum SCLK is reduced to 62.5 MHz (16 ns period) to maintain setup/hold margins. This allows high-speed data readout without compromising timing integrity in mixed-voltage designs.
Does the MCP33111D-10T-I/MS require an external reference voltage?
Yes, the MCP33111D-10T-I/MS requires an external reference voltage applied to the VREF pin, specified from 2.5V to 5.1V. The device does not include an internal reference; VREF directly sets the full-scale differential input range (±VREF) and LSB size. A 10 µF tantalum decoupling capacitor is recommended at the VREF pin for stability.
How does the self-calibration feature work in the MCP33111D-10T-I/MS?
The MCP33111D-10T-I/MS performs automatic self-calibration on power-up to correct offset, gain, and linearity errors. Users can also trigger recalibration on-demand via SPI command, which takes 500–650 ms. This ensures sustained accuracy after environmental changes - such as VREF settling drift or temperature-induced gain shift - without requiring external calibration hardware.
Can the MCP33111D-10T-I/MS operate with a 1.8V digital I/O supply?
No - while AVDD is fixed at 1.8V, the digital I/O interface (DVIO) must be between 1.7V and 5.5V, but logic thresholds scale with DVIO. Using 1.8V DVIO is valid and supported; VIH is defined as 0.9 × DVIO (≥1.62V) and VIL as 0.2 × DVIO (≤0.36V), ensuring compatibility with 1.8V logic families without level translation.
What is the purpose of the CNVST pin on the MCP33111D-10T-I/MS?
The CNVST pin serves dual roles: it initiates conversion on its rising edge (triggering sample-and-hold), and acts as chip select in 3-wire SPI mode. When pulled low, it enables SDO output; when high, SDO enters high-impedance state. This simplifies interface design by eliminating the need for a separate CS pin in microcontroller-constrained layouts.
MCP33111D-10T-I/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 1M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 1:1
- 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 ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP33111D-10T-I/MS FAQ
1.How can I place an order for MCP33111D-10T-I/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP33111D-10T-I/MS 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-10T-I/MS reliable?
The price and inventory of MCP33111D-10T-I/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP33111D-10T-I/MS is usually 5 days.
3.What payment methods are accepted for MCP33111D-10T-I/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP33111D-10T-I/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP33111D-10T-I/MS?
MCP33111D-10T-I/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP33111D-10T-I/MS 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-10T-I/MS?
For technical support, including MCP33111D-10T-I/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP33111D-10T-I/MS requirements.
6.How does Aetrix verify that MCP33111D-10T-I/MS is sourced from the original manufacturer or authorized distributors?
All MCP33111D-10T-I/MS 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-10T-I/MS meets industry standards.
7.What is the process for return or replacement of MCP33111D-10T-I/MS?
All MCP33111D-10T-I/MS units undergo pre-shipment inspection (PSI). If there is an issue with MCP33111D-10T-I/MS, 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-10T-I/MS part is unused and in its original packaging.
Return procedure for MCP33111D-10T-I/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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