Fermion MCP3424 18-Bit 4-Channel ADC

The Fermion module from DFRobot carries the MCP3424 from Microchip, an 18-bit delta-sigma analog-to-digital converter with four differential inputs. An amplifier with a gain of 1, 2, 4 or 8 (PGA) before the conversion makes even small voltages finely measurable. The module runs on 2.7 V to 5.5 V and connects via I2C to a Raspberry Pi, Arduino or ESP32. The DIP switch selects one of four I2C addresses.

Recommended alternative with Gravity connector: Gravity 16Bit 4-Channel ADC Analog Digital Converter I2C ADS1115

Recommended Accessories:

Features:

MCP3424 from Microchip, 18-bit delta-sigma converter
4 differential inputs
Amplifier (PGA) with gain 1, 2, 4 or 8
Resolution 12, 14, 16 or 18 bits at 240, 60, 15 or 3.75 samples per second
Internal reference 2.048 V, measuring range ±2.048 V divided by the gain
One-shot mode with standby after each conversion or continuous conversion
I2C address 0x68, 0x6A, 0x6C or 0x6E via DIP switch (marking)
Pin headers with 2.54 mm pitch

Application Examples:

Temperature measurement with platinum resistors (RTD), thermistors and thermocouples
Bridge sensors for pressure, strain and force
Scales
Monitoring battery voltages

Documentation:

Technical Data:

Manufacturer: DFRobot
Manufacturer SKU: DFR0316
Chip: MCP3424 (Microchip)
Operating voltage: 2.7 V to 5.5 V
Standby current: 300 nA (5 V)
Reference: 2.048 V ± 0.05 %, drift 15 ppm/°C
Amplifier (PGA): 1, 2, 4, 8
Resolution: 12, 14, 16, 18 bits
Data rate: 240, 60, 15, 3.75 samples per second
Differential measuring range: -2.048 V / PGA to 2.048 V / PGA (example PGA 4: ±0.512 V)
Gain error: 0.05 % (PGA 1, 18 bits)
Offset error: 15 µV (PGA 1, 18 bits)
Inputs: 4 differential, pin header 2.54 mm
Interface: I2C, pin header 2.54 mm
I2C address: 0x68, 0x6A, 0x6C, 0x6E
Operating temperature: -40 °C to 125 °C
Dimensions: 27 × 16 × 12 mm
Weight: 8.6 g