ADS1115 16-Bit ADC 4 Channel with Programmable Gain Amplifier For microcontrollers without
an analog-to-digital converter or when you want a higher-precision ADC,
the ADS1115 provides 16-bit precision at 860 samples/second over I2C. The chip can be configured
as 4 single-ended input channels, or two differential channels. As a nice bonus,
it even includes a programmable gain amplifier, up to x16, to help boost up smaller single/differential
signals to the full range.
We like this ADC because it can run from 2V to 5V power/logic, can measure a large range of signals
and its super easy to use. It is a great general purpose 16 bit converter.
The chip's fairly small so it comes on a breakout board with ferrites to keep the AVDD and AGND quiet.
Interfacing is done via I2C.
The address can be changed to one of four options (see the datasheet table 5) so you can have up
to 4 ADS1115's connected on a single 2-wire I2C bus for 16 single ended inputs.
WIDE SUPPLY RANGE: 2.0V to 5.5V
LOW CURRENT CONSUMPTION: Continuous Mode: Only 150µA
Single-Shot Mode: Auto Shut-Down
PROGRAMMABLE DATA RATE: 8SPS to 860SPS
INTERNAL LOW-DRIFT VOLTAGE REFERENCEINTERNAL OSCILLATORINTERNAL PGA
I2C INTERFACE: Pin-Selectable AddressesFOUR SINGLE-ENDED OR TWO DIFFERENTIAL INPUTS
PROGRAMMABLE COMPARATORThis board/chip uses I2C 7-bit addresses between 0x48-0x4B, selectable with jumpers