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SparkFun Qwiic 24Bit ADC - 4Channel (ADS1219)

SparkFun

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SKU:
057-SEN-27544
MPN:
SEN-27544
SparkFun Qwiic 24-bit ADS1219 four-channel ADC breakout board
SparkFun Qwiic 24-Bit ADC (ADS1219) provides four high-resolution analog inputs with up to 24-bit precision, differential measurement support, low power consumption, and easy I2C integration for precision sensing. View full description
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Technical Specifications

Brand:
SparkFun
ADC IC:
ADS1219
Resolution:
24-bit (20-bit effective)
LSB Size (Gain ×1):
244.14 nV
LSB Size (Gain ×4):
61.04 nV
Analog Inputs:
4xsingle-ended or 1–2xdifferential
Reference Inputs:
External reference or VDDA (jumper selectable)
Sample Rate:
20 Hz to 1 kHz
Operating Voltage (VDD):
2.3 V to 5.5 V
Qwiic Operating Voltage:
3.3 V
Operating Temperature:
−40 C to +125 C
Current Consumption:
8 uA to 410 uA
Noise Rejection:
50 Hz / 60 Hz
Interface:
I2C
I2C Address Range:
0x40 – 0x4F (default: 0x40)
Indicators:
Configurable power LED
Dimensions:
1 inx1 in

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

Resources:

High-Resolution 24-Bit, 4-Channel I2C ADC for Precision Voltage Measurement

The SparkFun Qwiic 24-Bit ADC – 4 Channel (ADS1219) is designed for applications where standard microcontroller ADCs fall short. Built around the Texas Instruments ADS1219, this breakout delivers ultra-high resolution voltage measurements, making it ideal for precision sensing, instrumentation, and low-level signal acquisition. With support for four single-ended inputs or up to two differential input pairs, it offers flexibility for a wide range of analog measurement scenarios.

Optimised for low-power operation, the ADS1219 supports single-shot, continuous-conversion, and power-down modes, allowing designers to balance measurement speed and power consumption. The Qwiic interface ensures simple, solder-free integration into 3.3V I2C systems, while configurable reference inputs and gain settings enable accurate measurements down to the nanovolt range. Built-in 50Hz and 60Hz noise rejection further improves reliability in electrically noisy environments.

Key Features:

  • 24-Bit High-Resolution ADC: Up to 24-bit resolution with 20-bit effective performance
  • Flexible Input Configuration: Four single-ended inputs or one/two differential pairs
  • Low-Noise Precision Measurement: Nanovolt-level LSB size with programmable gain
  • Multiple Operating Modes: Single-shot, continuous conversion, and power-down
  • Wide Voltage Support: Operates from 2.3V to 5.5V (3.3V via Qwiic)
  • Qwiic Connectivity: Dual Qwiic ports for easy I2C daisy-chaining
  • Configurable I2C Addressing: Supports up to 16 devices on one bus.

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