Adafruit MCP3421 - 18-bit ADC breakout with I2C interface. Supports 240 SPS, adjustable gain, differential inputs, and built-in precision low-drift reference. STEMMA QT connectors allow easy solderless connections. Includes small header for breadboard or perfboard use.
Adafruit MCP3421 18-bit ADC breakout provides an easy way to measure analog signals via I2C. Supports 240 SPS, adjustable gain, differential inputs, and built-in precision low-drift reference.
The breakout board is STEMMA QT form factor, allowing solderless connection to development boards. Includes a small 0.1" header for breadboard or perfboard use and four mounting holes for easy attachment.
Specifications
| Resolution / Sample Rate | 12-18 bit, 3.75 - 240 SPS |
| Inputs | Differential, 0-2.048V |
| Gain | Adjustable (programmable) |
| I2C | FM+, fixed address, up to 3.4 MHz |
| STEMMA QT | Two connectors, SparkFun Qwiic compatible |
| Additional Features | One-shot / continuous mode, Arduino library, four mounting holes |
| Header | 0.1" included for breadboard use |
Links:
Product page
Adafruit_MCP3421 Library