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Para microcontroladores sin convertidor analógico a digital o cuando se desea un ADC de mayor precisión, el ADS1115 proporciona una precisión de 16 bits a 3300 muestras/segundo sobre I2C. El chip se puede configurar como 4 canales de entrada de un solo extremo, o dos canales diferenciales. Como una buena ventaja, incluso incluye un amplificador de ganancia programable, hasta x16, para ayudar a aumentar las señales individuales y diferenciales más pequeñas a toda la gama. El chip es bastante pequeño, por lo que viene en una tabla de ruptura con ferritas para mantener el AVDD y AGND silenciosos. La interfaz se realiza a través de I2C. Simplemente conecte GND a tierra, VDD a su fuente de alimentación lógica y SCL/SDA al puerto I2C de su microcontrolador y ejecute el código de ejemplo para comenzar a leer datos.
Parámetros:
ADC Tasa de bits: 16 Bit
Tipo de interfaz: I2C
Canales: 4 canales AN0 AN1 AN2 AN3
entrada de voltaje: 2.0v-5.5v
entrada de voltaje de canal: 0-VDD
Modo continuo: solo 150μA.
Modo de disparo único: apagado automático
Velocidad de datos programable: 8sps-860sps
Rango de entrada de control programado, 7 tipos de rangos de entrada:
-0.256V ~ + 0.256V, -0.512V ~ + 0.512V, -1.024V ~ + 1.024V, -2.048V ~ + 2.048V, -4.096V ~ + 4.096V, -6.144V ~ + 6.14V V V I2 C direcciones de 7 bits entre 0x48-0x4B
El paquete incluye:
3 convertidor ADC analógico a digital ADS1115 de 16 bits, 4 canales, 3 cabezales de pines
SamMo
Comentado en los Estados Unidos el 8 de marzo de 2024
Seeing all the poor reviews here, wasn't sure if I'd get fake, bad or mislabelled chips. Bought and tested three using an Arduino and they work perfectly with the ADS1115 Arduino library from wollewald/ADS1115_WE. The library has a sketch to identify the chips correctly and it identified all three boards as having true ADS1115 and it tested for and saw all 16 bits of sampling correctly. For the price and convenience, cant beat these. Came with a header to solder onto to use on a breadboard. BTW, much cheaper than the digikey versions.
Eric W. Dziennik
Comentado en los Estados Unidos el 7 de octubre de 2024
Let me just say, I'm new to this, and I have spent three days re-coding a sketch, switching libraries, thinking that I was making a mistake and that was why I was getting poor readings. Well, I bought a different lot of this board from a different vendor, and I was able to get some stable code together. What was not stable were two of these boards, and I'm testing the third as I type this. One would work for a while, and then return 0v readings from the programmed pin, even though I was getting a completely different reading with a multimeter. Then the other would work and then start slowly dropping to 0v reading. You could watch the thing fail. This is with the board from a different vendor running in tandem, using the same code, giving correct readouts. I wouldn't buy these from this vendor again.
Chris Maslyar
Comentado en los Estados Unidos el 4 de abril de 2024
Great little device. Simple I2C interface. Configure and Read. Includes multiple gain ranges (+/-6v to +/-250mV) from a single supply. Yes it measures below ground with a single supply. The differential measurement capability is amazing (measuring current through a resistor in both directions). Used this device to measure shunt currents on a solar battery system (0.000750 ohm resistor). Connected to a Raspberry PI Zero for I2C communication and Wifi connectivity. Amazingly accurate. The different sampling rates offer 'effective' filtering for noisy signals and the fast sampling is great for higher speed signals.
Matthieu
Comentado en Canadá el 3 de noviembre de 2023
Not genuine ADS1115 circuits. Gives bad readings and upstream kernel drivers can't communicate properly with it. Bought genuine ones and everything worked fine. AVOID
jlkidder
Comentado en los Estados Unidos el 30 de octubre de 2019
Had one of three DOA
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