MCP3221A5T-E/OT Microchip Integrated Circuit (SOT23 (5-Pin)) In Stock
MCP3221A5T-E/OT is a 12-bit successive approximation ADC from Microchip with I2C interface, 22 ksps sampling rate, and 5 V analog input support. Available in a tiny SOT-23-5 package for compact sensor designs.
- Manufacturer
- Microchip
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- MCP3221A5T-E/OT Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.3800(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 12-bit successive approximation ADC with 22 ksps throughput and I2C interface simplifies analog-to-digital conversion in microcontroller systems
- Accepts analog input voltages from -0.3 V to 5.8 V with maximum 0.0488% linearity error for accurate sensor measurements
- Ultra-compact SOT-23-5 package occupies minimal PCB area, ideal for space-constrained IoT sensor nodes and wearable devices
Applications
The MCP3221A5T-E/OT is designed for embedded sensor acquisition systems requiring precise 12-bit analog-to-digital conversion over a standard I2C bus. It excels in battery-powered IoT nodes, industrial temperature and pressure sensing, and portable medical instrumentation where board space is limited. The SOT-23-5 footprint and 5 V input range make it straightforward to integrate with both 3.3 V and 5 V microcontrollers without additional level-shifting circuitry.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | SOT-23-5 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| Analog Input Voltage-Max | 5.8V |
| Analog Input Voltage-Min | -0.3 V |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e3 |
| Linearity Error-Max (EL) | 0.0488% |
| Number of Analog In Channels | 1 |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | SERIAL |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Sample Rate | 0.0223MHz |
| Sample and Hold / Track and Hold | SAMPLE |
| Screening Level | TS 16949 |
| Supply Current-Max | 0.25mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| ## MCP3221A5T-E/OT Alternates Showing results | Image |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP3221A5T-E/OT:
Microchip Technology Inc 5V SINGLE CHAN 12BIT SER A/D CONV W/SOFTWARE ADDRESSABLE 12C NTRFC ADDRESS 101.
suggested
suggested
Frequently Asked Questions
What resolution and sampling rate does the MCP3221A5T-E/OT provide for analog signal acquisition?
The MCP3221A5T-E/OT delivers 12-bit resolution at up to 22 ksps sample rate using a successive approximation register architecture. This combination supports accurate digitization of slowly varying sensor signals such as temperature from -40°C to 125°C, pressure, and light intensity in embedded measurement systems.
How does the MCP3221A5T-E/OT connect to a microcontroller and what bus speed is supported?
The MCP3221A5T-E/OT uses a standard 2-wire I2C interface supporting 100 kHz standard mode and 400 kHz fast mode operation. This allows a single master microcontroller to address the ADC directly alongside other I2C peripherals, reducing GPIO pin count and simplifying firmware development with widely available I2C libraries.
In which sensor applications does the MCP3221A5T-E/OT's 0.0488% linearity error provide an advantage?
With a maximum integral linearity error of just 0.0488%, the MCP3221A5T-E/OT is suitable for precision instrumentation such as thermocouple amplifier digitization, industrial 4–20 mA loop monitoring, and medical biosensor readout circuits, where non-linearity would otherwise introduce systematic measurement errors exceeding 1 LSB across the 12-bit range.
What analog input voltage range does the MCP3221A5T-E/OT accept and does it need external protection?
The device accepts analog input voltages from -0.3 V to 5.8 V absolute maximum, with the recommended operating range determined by the VDD supply. Running from a 5 V rail allows direct connection to most resistive voltage-divider sensor circuits without external clamping diodes, reducing BOM count and component cost in 5-volt measurement designs.
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