sparkfun Qwiic 12-Bit ADC Hook-Up Manual page 7

Note: The ADS1015 has an integrated voltage reference; an external reference voltage cannot be used.
The ADS1015 is a powerful tool with multiple configuration settings, set by the Config Register, for the analog
voltage readings (or conversions). In the following sections, we will cover the general operation of the ADS1015.
For exact details of the various configuration settings, please refer to the manufacturer datasheet. The operational
characteristics of the ADS1015 are summarized in the table below.
Characteristic
Operating Voltage (V
DD
Operating Temperature
Operation Modes
Analog Inputs
Resolution
Sample Rate
Annotated image of ADS1015 on board. Click to enlarge.
Functional block diagram from datasheet. Click for more details.
Description
) 2.0V to 5.5V (Default on Qwiic System: 3.3V)
-40°C to 125°C
Single-Shot (Default), Continuous-Conversion, and Duty Cycling
Measurement Type: Single-Ended or Differential
Input Voltage Range: GND to V
Maximum Voltage Measurement: Smallest of V
Full Scale Range (FSR): ±.256V to ±6.114V (Default: 2.048V)
12-bit (Differential) or 11-bit (Single-Ended)
LSB size: 0.125mV - 3mV (Default: 1 mV based on FSR)
128 Hz to 3.3 kHz (Default: 1600SPS)
(see Caution note, below)
DD
or FSR
DD