ADS1219 24Bit High Precision AD Sampling Module 2.3V-5.5V ADC 4-Channel Input with Programmable x1/x4 Gain Amplifier

Introduction:
- The ADS1219 24-bit ADC can provide four I2C controlled ADC input channels. These channels can be used as single ended inputs or paired for differential inputs, with sampling rates up to 1kHz. What makes this ADC more powerful is that it has a programmable x1 or x4 gain amplifier that allows you to "amplify" small changes in analog voltage.

- ADS1219 can use its own internal 2.048V voltage reference for measurement, or provide its own reference through REFP and REFN tap pads. You can also provide your own VDDA (AVDD) by opening the jumper and connecting the voltage to the VDDA pad. This ADC board has eight address jumpers that allow you to choose one from sixteen unique addresses (0x40 to 0x4F). Through this method, you can connect up to 16 ADCs on the same I2C bus and have 64 ADC channels. The maximum resolution of the converter is 24 bits, corresponding to 244.14nV per count when the gain is x1. At a gain of x4, the resolution per count is 61.04nV. Note: The effective resolution is limited to 20 bits.

- Note: The default I2C address of ADS1219 is 0x40. By selecting the jumper, it can be selected within the range of 0x40 to 0x4F.

Features:
- Working voltage (VDD): 2.3V - 5.5V (note: when using for Qwiic cable for power supply, the working voltage is only 3.3V)
- Working temperature: -40°C to 125°C
- Working mode: single trigger, continuous conversion, and shutdown
- Analog Input:
  Four channel single ended
  Can be configured as one or two differential inputs
  Independent reference voltage input
  VDDA (AVDD) can also be configured through jumpers and branch pads
- Resolution:
  Maximum 24 digits, 20 digits valid
  LSB size (gain x1): 244.14nV
  LSB size (gain x4): 61.04nV
- Sampling rate: 20Hz to 1kHz
- Combination current consumption (typical): 8μA -410μA
- 50Hz and 60Hz noise suppression.
- Configurable input multiplexer.
- Sixteen configurable I2C addresses:
  0x40 - 0x4F
  Default value: 0x40
- Two Qwiic connection ports
- Size: 1 inch x 1 inch

Package Included:
- 1 x ADS1219 24Bit AD Sampling Module