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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