Programmable Data Rate: 8 Samples per Second (SPS) to 860 SPS.Four single-ended inputs or two differential inputs.I2C interface: Four pin-selectable addresses.Low Current Consumption (in Continuous-Conversion mode): 150 μA.Supply Range: 2.0 V to 5.5 V (Minimum Analog voltage (AVDD) 2V, Maximum Input voltage: 5.5V).Operating Temperature Range: –40☌ to +125☌. #Texas instruments analog to digital converter serial#Serial clock input: Clocks data on SDA (used for I2C communication) Serial data: Transmits and receives data (used for I2C communication) It also features PGA (Programmable Gain Amplifier), using which we can measure very low voltages like millivolts by programming the amplifier to multiply with a gain value so the measurement is accurate.ĭigital comparator output or conversion readyĭifferential channel 1: Single-ended channel 1 input or Negative inputĭifferential channel 1: Single-ended channel 2 input or Negative inputĭifferential channel 2: Single-ended channel 3 input or Positive inputĭifferential channel 2: Single-ended channel 4 input or Negative input Hence, ADS1115 can give a better resolution, which means, ADS1115 can give finer values and it can be more accurate. Let’s do a little comparison between Arduino and ADS1115 to understand how powerful ADS1115 ADC is Arduino has a 10-bit ADC which means it can hold a digital value of 0 to 1023 (because 2 10 is 1024) whereas the 16-bit ADS1115 can hold 2 16 which is 65536. Sometimes these built-in ADCs don’t suffice the need (they have lesser gain and poor resolution) hence ADS1115 type of compact ADC boards come in handy. A lot of microcontrollers (like the Arduino boards, ESP8266 boards) have built-in ADCs and it’s very essential because most sensors give analog output whereas microcontrollers need digital input. A programmable gain amplifier (PGA) and a digital comparator are also included in the ADS1115 SMD IC.ĪDS1115 is one of the most powerful and versatile Analog to Digital Converter (ADC). This IC is from Texas Instruments a low-drift voltage reference and an oscillator are included in the ADS1115 IC. In simple terms, the ADS1115 is a 16-bit ADC with four inputs that are multiplexed. ADS1115 IC is a 16-Bit ADC with Internal Reference, Oscillator, 860-SPS, and Programmable Comparator which is ultra-small, low-power, and I2C compatible.
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