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ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier

SKU: ADA1085

$22.56 AUD, inc GST

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ADS1115 16-Bit ADC - 4 Channel with Programmable Gain Amplifier
22.56 AUD

SKU: ADA1085

$22.56 AUD, inc GST
2 reviews 0 5 4.5
Ships today (delivered by Mon, 5th of Dec)
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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. Adafruit likes 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. 

To get you started, Adafruit has example code for both the Raspberry Pi (in Adafruit's Adafruit Pi Python library) and Arduino (in Adafruit's ADS1X15 Arduino library repository) Simply connect GND to ground, VDD to your logic power supply, and SCL/SDA to your microcontroller's I2C port and run the example code to start reading data.

Technical Details

  • 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 REFERENCE
  • INTERNAL OSCILLATOR
  • INTERNAL PGA
  • I2C INTERFACE: Pin-Selectable Addresses
  • FOUR SINGLE-ENDED OR TWO DIFFERENTIAL INPUTS
  • PROGRAMMABLE COMPARATOR



Lots more information in the datasheet

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Customer Reviews

  1. Review by Nickname - analog to digital verified purchaser
    Rating
    80

    A bit pricey but you have to get analog sensors to digital somehow with the raspberry pi. The ADS1115 does a good job however be warned documentation on this product is a bit lacking. (Posted on 29/11/2014)

  2. Review by Paul - Great Value verified purchaser
    Rating
    100

    I found this little A/d board to be easy to use. I soldered it on the prototyping area of the arduino logger shield and connected 2 U.V. radiometers to it and sampled at 10 samples/sec whilst being lifted with an Oktocopter as part of some University research. Worked beautifully.
    (Posted on 11/03/2014)

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