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Microchip Technology MCP3301-CI/SN
- Part No.:
- MCP3301-CI/SN
- Manufacturer:
- Microchip Technology
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MCP3301-CI/SN.pdf
- Description:
- IC ADC 13BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,190
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Product details
Overview
MCP3301-CI/SN from Microchip Technology is a 13-bit differential-input successive-approximation analog-to-digital converter (ADC) with SPI serial interface, ±2 LSB max INL, 100 ksps sampling rate at 5V, and 450 µA max active current. It operates from 4.5V to 5.5V and supports full differential or pseudo-differential input configurations for precision remote sensor digitization.
For engineers reviewing the MCP3301-CI/SN datasheet, MCP3301-CI/SN pinout, MCP3301-CI/SN application, or MCP3301-CI/SN equivalent, this page delivers verified electrical specs, package mapping, real-world use scenarios, and validated alternative parts - all confirmed against Microchip DS21700E and official parametric data.
Technical Context
The MCP3301-CI/SN implements a 13-bit SAR architecture with integrated sample-and-hold, requiring 1.5 clock cycles for acquisition and 13 for conversion. Its binary two's complement output includes a sign bit indicating polarity of the differential input (IN+ vs. IN−).
It uses an external reference voltage (0.4V to VDD) to set full-scale span and LSB size (e.g., 610 µV at VREF = 2.5V), and achieves 78 dB SINAD, 92 dB SFDR, and 79 dB CMRR - enabling high-fidelity signal capture in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 13-bit (12 data bits + sign bit); enables bipolar measurement from −4096 to +4095 codes |
| INL (max) | ±2 LSB for MCP3301-C grade; guarantees monotonicity and ≤0.024% full-scale error over temperature |
| Sampling Rate | 100 ksps at 5V supply; supports real-time monitoring of fast-changing transducer outputs |
| Supply Range | 4.5V to 5.5V; ensures stable operation across industrial power rails with ±10% tolerance |
| Standby Current | 50 nA typical; allows multi-year battery life in low-duty-cycle remote sensing nodes |
| VREF Range | 0.4V to VDD; permits flexible scaling of input-referred resolution from 98 µV to 1.22 mV |
| SINAD | 78 dB at 1 kHz; delivers 12.66 effective bits for high-fidelity signal reconstruction |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), 150 mil width, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF | Reference Voltage Input | Sets full-scale analog input range and LSB size; must be stable to avoid gain error drift |
| IN(+) | Positive Analog Input | Accepts voltage up to VDD + 0.3V; used with IN(−) for true differential mode or alone for pseudo-differential |
| IN(−) | Negative Analog Input | Defines common-mode baseline; full differential operation rejects noise common to both inputs |
| VSS | Analog Ground | Must connect to clean analog ground plane to minimize noise coupling into sample capacitor |
| CS/SHDN | Chip Select / Shutdown | Pulled low to initiate conversion; pulled high to halt conversion and enter 50 nA standby mode |
| DOUT | SPI Serial Data Output | Outputs 13-bit two's complement code on falling CLK edge; tri-stated when CS high |
| CLK | SPI Serial Clock | Drives acquisition (1.5 cycles) and conversion (13 cycles); max 1.7 MHz at 5V |
| VDD | Power Supply | 4.5–5.5V supply; requires 0.1 µF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Full Differential Inputs | Rejects common-mode noise up to 79 dB, enabling accurate measurements in electrically noisy industrial settings |
| Low Power Standby | 50 nA typical current allows integration into energy-harvesting or coin-cell-powered sensor nodes |
| SPI Serial Interface | Direct compatibility with PIC® microcontrollers and standard SPI controllers without protocol translation logic |
| Flexible Reference Scaling | VREF adjustable from 0.4V to VDD enables optimized resolution for low-level signals (e.g., 98 µV LSB at 0.4V) |
| Industrial Temperature Range | Specified from −40°C to +85°C, supporting deployment in uncontrolled outdoor or factory-floor environments |
Applications
| Remote Sensor Digitization | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Converting millivolt-level thermocouple or strain gauge outputs in field-deployed environmental monitors. IC Role / Device Role / Timing Role: ADC front-end with differential input rejecting EMI from long sensor cables and power lines. Use Value: ±2 LSB INL and 79 dB CMRR ensure <0.025% measurement error despite ambient 50/60 Hz interference. | Use Scenario: Multi-month soil moisture and temperature logging using AA batteries or energy harvesting. IC Role / Device Role / Timing Role: Low-power A/D converter activated only during scheduled sampling bursts. Use Value: 50 nA standby current extends battery life beyond 5 years in 1-sample-per-minute duty cycle. |
| Transducer Signal Conditioning | Portable Instrumentation Interfaces |
Use Scenario: Digitizing bridge-based pressure or load cell outputs in handheld test equipment. IC Role / Device Role / Timing Role: High-accuracy differential ADC with programmable VREF to match transducer sensitivity. Use Value: Adjustable 0.4–5V VREF range allows direct matching to 2.5V ratiometric bridges, eliminating gain calibration. | Use Scenario: Embedded signal acquisition in portable oscilloscopes or multimeters with limited PCB area. IC Role / Device Role / Timing Role: Compact 8-pin SOIC ADC delivering 13-bit resolution without external op-amps or references. Use Value: 150 mil SOIC footprint and integrated sample-and-hold reduce BOM count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 13-bit differential-input ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7816U | 16-bit resolution, 200 ksps, single-ended input only, no differential mode | Higher resolution but lacks full differential capability; requires external instrumentation amplifier for noise rejection | Select when absolute precision > resolution and differential noise immunity is handled externally |
| MCP3302-I/P | Same 13-bit SAR core, dual-channel (vs. single), DIP-8 package, ±1 LSB INL (B-grade) | Offers channel multiplexing but larger through-hole package; tighter INL spec requires B-grade selection | Select when multi-channel scanning is needed and board space allows DIP-8 or INL < ±2 LSB is mandatory |
Compared with ADS7816U and MCP3302-I/P, the MCP3301-CI/SN uniquely combines single-channel full differential input, 8-pin SOIC compactness, guaranteed ±2 LSB INL over temperature, and 50 nA standby - making it optimal for space-constrained, battery-operated, noise-prone sensor nodes where differential integrity is non-negotiable.
Availability
MCP3301-CI/SN is available at Aetrix Electronics and suitable for remote sensors, battery-operated systems, and transducer interface applications requiring stable component supply and long-term industrial availability.
Supply support for MCP3301-CI/SN 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 since 1989.
The MCP3301 product line delivers low-power, high-accuracy SAR ADCs optimized for battery-operated and remote data acquisition systems - emphasizing differential noise rejection, minimal standby current, and seamless SPI integration with PIC® MCUs.
FAQ
What is the maximum sampling rate of the MCP3301-CI/SN under specified conditions?
The MCP3301-CI/SN achieves a maximum sampling rate of 100 ksps when operated at VDD = 5V and FCLK = 1.7 MHz (17 × FSAMPLE). This rate is fully characterized over the industrial temperature range (−40°C to +85°C) and requires adherence to timing specifications including tHI/tLO ≥ 275 ns and minimum clock speed of 85 kHz during conversion.
Does the MCP3301-CI/SN support true differential input mode, and how is it implemented?
Yes, the MCP3301-CI/SN supports true full differential input mode using IN(+) and IN(−) pins. In this configuration, the full-scale input span equals |IN(+) − IN(−)|, and common-mode signals up to 79 dB are rejected. The device outputs a 13-bit two's complement code where the MSB is the sign bit - directly indicating which input is at higher potential.
What is the standby current specification for the MCP3301-CI/SN, and how is it enabled?
The MCP3301-CI/SN has a typical standby current of 50 nA, with a maximum of 1 µA. Standby mode is entered by driving the CS/SHDN pin high, which halts conversion and disables internal circuitry. This ultra-low quiescent state is critical for extending battery life in infrequently sampled remote sensors and IoT endpoints.
Can the MCP3301-CI/SN operate with a reference voltage below 1V, and what impact does that have on resolution?
Yes, the MCP3301-CI/SN accepts VREF from 0.4V to VDD. At VREF = 0.4V, the LSB size is 98 µV (2 × 0.4V / 8192), enabling high-resolution digitization of low-amplitude signals such as thermopile or MEMS microphone outputs - though SNR and THD may degrade slightly versus 5V reference per characterization data.
Which package type is used by the MCP3301-CI/SN, and what are its key mechanical attributes?
The MCP3301-CI/SN uses the 8-pin SOIC package with 150 mil body width and standard 1.27 mm pitch. It is RoHS-compliant, surface-mount compatible, and features gull-wing leads suitable for reflow soldering. Thermal resistance θJA is 163°C/W, supporting operation up to +85°C ambient without forced cooling.
MCP3301-CI/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MCP3301-CI/SN FAQ
1.How can I place an order for MCP3301-CI/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for MCP3301-CI/SN 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 MCP3301-CI/SN reliable?
The price and inventory of MCP3301-CI/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCP3301-CI/SN is usually 5 days.
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MCP3301-CI/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCP3301-CI/SN 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 MCP3301-CI/SN?
For technical support, including MCP3301-CI/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCP3301-CI/SN requirements.
6.How does Aetrix verify that MCP3301-CI/SN is sourced from the original manufacturer or authorized distributors?
All MCP3301-CI/SN 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 MCP3301-CI/SN meets industry standards.
7.What is the process for return or replacement of MCP3301-CI/SN?
All MCP3301-CI/SN units undergo pre-shipment inspection (PSI). If there is an issue with MCP3301-CI/SN, 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 MCP3301-CI/SN part is unused and in its original packaging.
Return procedure for MCP3301-CI/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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