CJ-ADS1115 16位 ADC 4 通道 類比轉數位模組 ，帶有可編程增益放大器 2.0V 至5 .5V

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CJ-ADS1115 16位 ADC 4 通道 類比轉數位模組 ，帶有可編程增益放大器 2.0V 至5 .5V

對於沒有模數轉換器的微控制器或者當您需要更高精度的ADC時， CJ-ADS1115 16位 ADC 4 通道 類比轉數位模組  通過I2C提供860個採樣/秒的16位精度。該芯片可配置為4個單端輸入通道或兩個差分通道。作為一個不錯的獎勵，它甚至包括一個可編程增益放大器，最高可達x16，以幫助將更小的單/差分信號提升到全頻範圍。我們喜歡這種ADC，因為它可以從2V到5V的功率/邏輯運行，可以測量大範圍的信號並且它的超級易用性。這是一個偉大的通用16位轉換器。

CJ-ADS1115 16位 ADC 4 通道 類比轉數位模組 芯片相當小，因此它帶有鐵氧體分線板以保持AVDD和AGND的安靜。接口通過I2C完成。地址可以更改為四個選項之一（見數據表表5），因此您可以在單個2線I2C總線上連接多達4個ADS1115，以實現16個單端輸入。

• 寬電源範圍：2.0V至5.5V
• 低電流消耗：連續模式：僅150A單次模式：自動關機
• 可編程數據速率：8SPS至860SPS
• 內部低漂移電壓參考
• 內部振盪器
• 內部PGA
• I2C接口：引腳可選地址
• 四個單端或兩個差分輸入
• 可編程比較器
• 該電路板/芯片使用0x48-0x4B之間的I2C 7位地址，可通過跳線進行選擇。

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.

To get you started, we have example code for both the Raspberry Pi (in our Adafruit Pi Python library), Arduino (in our ADS1X15 Arduino library repository) and CircuitPython. 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.

Specification：

• Wide supply range: 2.0V to 5.5V
• 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
• This board chip uses I2C 7-bit addresses between 0x48-0x4B
• PCB size:(L*W)2.55*0.90cm/1.00″*0.35″