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Microchip Technology MCP3301T-BI/MS
- Part No.:
- MCP3301T-BI/MS
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MCP3301T-BI/MS.pdf
- Description:
- IC ADC 13BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,778
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Product details
Overview
MCP3301T-BI/MS from Microchip Technology is a 13-bit differential-input successive approximation register (SAR) analog-to-digital converter (ADC) with SPI serial interface, ±1 LSB INL (B-grade), 100 ksps sampling rate at 5V, and 50 nA standby current. It operates from 4.5V to 5.5V supply and delivers 98 µV to 1.22 mV input-referred resolution depending on VREF setting, enabling high-precision measurement in battery-powered remote sensor nodes.
For engineers reviewing the MCP3301T-BI/MS datasheet, MCP3301T-BI/MS pinout, MCP3301T-BI/MS application, or MCP3301T-BI/MS equivalent, this page provides verified technical context, validated pin functions, confirmed differential input operation, real-world timing constraints (e.g., 13-clock conversion time, 1.5-clock acquisition), and two documented alternative ADCs for low-power 13-bit SAR designs.
Technical Context
The MCP3301T-BI/MS implements a true full-differential SAR architecture with integrated sample-and-hold, supporting binary two's complement output coding. Its conversion sequence requires exactly 13 clock cycles for bit resolution plus 1.5 cycles for acquisition, with CS/SHDN controlling both communication initiation and shutdown entry.
It accepts external reference voltages from 400 mV to VDD, directly scaling LSB size per 2×VREF/8192, and achieves 78 dB SINAD and 92 dB SFDR at 1 kHz input. Common-mode rejection is 79 dB and PSR is 74 dB, both measured with VREF = 400 mV and 5V respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 13-bit (12 data + sign bit); enables bipolar full-scale range of ±VREF with unambiguous polarity detection |
| Sampling Rate | 100 ksps max at 5V; defines maximum continuous acquisition throughput for time-critical sensor monitoring |
| INL / DNL | ±1 LSB max (B-grade); guarantees monotonicity and <0.012% full-scale linearity error across temperature |
| Supply Range | 4.5V to 5.5V; ensures specified AC/DC performance without derating in industrial 5V systems |
| Standby Current | 50 nA typical; allows multi-year operation from coin-cell batteries in wake-on-event sensor nodes |
| VREF Range | 0.4V to VDD; supports flexible resolution tuning-e.g., 98 µV LSB at 400 mV reference for microvolt-level transducer signals |
| SINAD | 78 dB at 1 kHz; corresponds to 12.66 effective bits, validating usable dynamic range for precision instrumentation |
Pinout & Package
The MCP3301T-BI/MS is housed in an 8-pin MSOP package (3.0 mm × 3.0 mm, 0.65 mm pitch), optimized for space-constrained PCB layouts in portable instrumentation and IoT edge nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference voltage input | Sets full-scale span and LSB size; must be stable-any noise or drift directly modulates conversion accuracy |
| IN(+) | Positive analog input | Accepts voltage up to VDD+0.3V; used with IN(−) for true differential measurement rejecting common-mode interference |
| IN(−) | Negative analog input | Completes differential pair; full-scale input span = |IN(+)-IN(−)|, enabling bidirectional signal capture |
| VSS | Analog ground | Must connect to clean analog ground plane-separate from digital ground to prevent noise coupling into sampling node |
| CS/SHDN | Chip select / shutdown control | Pulled low to start conversion and enable SPI; pulled high to halt conversion and reduce current to 50 nA standby |
| DOUT | SPI serial data output | Outputs 13-bit two's complement code MSB-first on CLK falling edge; tri-stated when CS/SHDN is high |
| CLK | SPI serial clock input | Drives both acquisition (1.5 cycles) and conversion (13 cycles); min 85 kHz required to prevent charge bleed errors |
| VDD | Power supply | 4.5–5.5V analog/digital supply; requires local 0.1 µF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Full differential input architecture | Rejects common-mode noise up to 79 dB, enabling reliable measurements in electrically noisy industrial environments |
| Binary two's complement output coding | Delivers signed 13-bit result directly usable for bipolar signal processing without software sign extension or offset correction |
| 100 ksps sampling with 13-clock conversion | Enables deterministic timing control-total conversion time fixed at 14.5 clock periods, simplifying real-time firmware scheduling |
| 400 mV to 5V programmable VREF range | Permits resolution optimization: e.g., 400 mV reference yields 98 µV LSB for high-gain sensor front-ends without external amplification |
| 50 nA standby current | Supports ultra-low-power sleep modes-critical for energy-harvesting or battery-only remote sensing applications |
Applications
| Remote Data Acquisition | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Long-term environmental monitoring using thermocouples and strain gauges deployed in inaccessible field locations. IC Role / Device Role / Timing Role: MCP3301T-BI/MS performs high-resolution differential digitization of low-level mV-range transducer outputs with minimal power draw between wake cycles. Use Value: Full differential inputs reject thermally induced common-mode noise; 50 nA standby extends 10-year battery life in solar-charged deployments. | Use Scenario: Wireless vibration sensor attached to rotating machinery, transmitting FFT data over BLE only upon threshold-triggered events. IC Role / Device Role / Timing Role: MCP3301T-BI/MS captures synchronized dual-channel acceleration waveforms at 100 ksps during active windows, then shuts down completely. Use Value: 13-bit resolution resolves sub-millig acceleration changes; 100 ksps supports Nyquist analysis up to 50 kHz mechanical resonance bands. |
| Portable Instrumentation | Industrial Transducer Interface |
Use Scenario: Handheld multimeter with autoranging capability measuring DC voltage, resistance, and temperature via RTD. IC Role / Device Role / Timing Role: MCP3301T-BI/MS serves as primary ADC for precision analog front-end, switching VREF and input configuration under microcontroller control. Use Value: Programmable VREF (400 mV–5V) enables optimal LSB sizing per range-e.g., 98 µV LSB for 400 mV full-scale millivolt mode. | Use Scenario: 4–20 mA loop-powered pressure transmitter conditioning bridge sensor output in hazardous area enclosures. IC Role / Device Role / Timing Role: MCP3301T-BI/MS digitizes ratiometric bridge voltage with respect to loop-supplied VREF, rejecting supply ripple via 74 dB PSR. Use Value: High PSR and CMRR ensure stable 12.66 ENOB despite 50/60 Hz mains coupling and long cable runs in factory settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 13-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IDR | 16-bit resolution, 100 ksps, SPI interface, but requires external reference and has 1.5 mA active current | Higher resolution suited for metrology-grade calibration equipment, not ultra-low-power remote sensors | Select ADS8325IDR when absolute accuracy >12-bit ENOB is mandatory and power budget allows >30× higher active current |
| MCP33111D-10-I/MS | 14-bit, 1 Msps, same MSOP-8 package, 3.3V-only supply, 250 µA active current | Targeted at higher-speed industrial PLC analog inputs where 3.3V logic compatibility is required | Choose MCP33111D-10-I/MS for faster sampling in 3.3V systems; avoid if 4.5–5.5V supply or <100 nA standby is essential |
Compared with ADS8325IDR and MCP33111D-10-I/MS, the MCP3301T-BI/MS uniquely balances 13-bit precision, 50 nA standby, and 5V supply compatibility-making it the only option among the three qualified for decade-long battery operation in distributed sensor networks.
Availability
MCP3301T-BI/MS is available at Aetrix Electronics and suitable for remote data acquisition, battery-powered sensor nodes, portable instrumentation, and industrial transducer interface applications requiring stable component supply and long-term lifecycle support.
Supply support for MCP3301T-BI/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 is a leading provider of microcontrollers, analog devices, and Flash-IP solutions, serving industrial, automotive, and consumer markets with high-reliability silicon and development tools.
The MCP3301 product line delivers low-power, high-accuracy SAR ADCs optimized for battery-operated and remote sensing applications where differential input integrity and micropower shutdown are critical system requirements.
FAQ
What is the guaranteed INL specification for the MCP3301T-BI/MS?
The MCP3301T-BI/MS is a B-grade device with guaranteed ±1 LSB maximum integral nonlinearity over the full industrial temperature range (–40°C to +85°C) and 4.5V–5.5V supply. This specification ensures monotonic behavior and less than 0.012% full-scale linearity error without requiring post-conversion calibration in most precision sensor applications.
Does the MCP3301T-BI/MS support pseudo-differential operation?
Yes, the MCP3301T-BI/MS supports pseudo-differential operation by biasing the IN(–) input above VSS (e.g., at VREF/2), enabling bipolar single-ended signal acquisition. In this mode, the device outputs a full 13-bit two's complement code ranging from –4096 to +4095, preserving sign information while using only one active analog input channel.
What is the minimum clock frequency required for reliable operation of the MCP3301T-BI/MS?
The MCP3301T-BI/MS requires a minimum clock frequency of 85 kHz during the 13-clock conversion cycle to prevent charge bleed from the internal sample capacitor. Operating below this threshold may introduce linearity errors exceeding the ±1 LSB INL specification, particularly at temperature extremes or with high source impedances.
Can the MCP3301T-BI/MS operate from a 3.3V supply?
No-the MCP3301T-BI/MS is specified for 4.5V to 5.5V operation only. While absolute maximum ratings allow up to 7.0V, electrical characteristics including INL, DNL, SINAD, and sampling rate are guaranteed exclusively within the 4.5V–5.5V range. For 3.3V systems, consider the pin-compatible MCP33111D-10-I/MS instead.
How does the VREF voltage affect LSB size in the MCP3301T-BI/MS?
The LSB size of the MCP3301T-BI/MS is calculated as 2 × VREF / 8192. For example, with VREF = 5.0V, LSB = 1.22 mV; with VREF = 0.4V, LSB = 98 µV. This direct scaling allows designers to optimize resolution for specific sensor output ranges without external gain stages-provided VREF stability meets the 0.001 µA leakage and low-noise requirements.
MCP3301T-BI/MS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 13
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP3301T-BI/MS FAQ
1.How can I place an order for MCP3301T-BI/MS through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP3301T-BI/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 MCP3301T-BI/MS reliable?
The price and inventory of MCP3301T-BI/MS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP3301T-BI/MS is usually 5 days.
3.What payment methods are accepted for MCP3301T-BI/MS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCP3301T-BI/MS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCP3301T-BI/MS?
MCP3301T-BI/MS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP3301T-BI/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 MCP3301T-BI/MS?
For technical support, including MCP3301T-BI/MS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3301T-BI/MS requirements.
6.How does Aetrix verify that MCP3301T-BI/MS is sourced from the original manufacturer or authorized distributors?
All MCP3301T-BI/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 MCP3301T-BI/MS meets industry standards.
7.What is the process for return or replacement of MCP3301T-BI/MS?
All MCP3301T-BI/MS units undergo pre-shipment inspection (PSI). If there is an issue with MCP3301T-BI/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 MCP3301T-BI/MS part is unused and in its original packaging.
Return procedure for MCP3301T-BI/MS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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