*The RoHS icon with this product means the PCBs, components, solder, chemicals are all lead-free and RoHS compliant. And this product is produced in lead free process. Unfortunately, now, we cannot provide documentation for this product is RoHS compliant.
Resources:
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Package Includes:
Notes:
- This package does not include Din-Rail PCB holders and cables.
- This board uses 4-pin connectors for I2C bus.
- Side by side linking of this products uses 2.5 inch long of wires.
Features:
- 4 channels of analog inputs, voltage:0-5V, 0-10V, current: 0-20mA, 4-20mA, 0-40mA
- MCP3424, 12,14,16 and 18-bit ADC, MCP3424
- I2C bus speed 100Khz, 400Khz, 3.4Mhz
- On-board pull-up resistors for I2C bus
- Up to 8 boards on a single bus
- Operating voltage: 2.7V to 5.5V
- Inverse polarity protection circuit for power supply
- 30V over-voltage protections for each input channel
- Input transient suppression for each input channel
- Supports Din-rail PCB holder
This is an analog to digital converter board through I2C bus, or I2C ADC BOARD. The board has 4 analog inputs. Each input can be selected to connect to voltage and current sources, but not the same time. Therefore it can be connected to 0-5VDC, 0-10VDC, 0-20mA, 4-20mA and 0-40mA. The over-voltage protection circuit can protect continuous voltage; up to 30 volt. This circuit protects board damaging from human error and wrong connection. Also each input has transient suppression device. This device protects the board from external transient voltage when the input is connecting to long wires of sensor. The analog to digital chip can be selected a resolution: 12,14,16, and 18-bit. The most significant bit (MSB) is used for a sign bit. For this board, the sign bit is away zero. It represents a plus sign. The digital value can be accessed by microcontrollers through I2C bus. The PGA of ADC can be programmed through I2C bus too. The I2C bus speed is compatible to standard mode: 100Khz, 400Khz, and 3.4Mhz. The addresses of each board can be selected with two jumpers. The addresses can be eight different addresses so you can connect eight boards together on a single bus. The board has two of 10Kohm pull-up resistors for I2C lines ,and they can be enabled or disabled with the jumpers. The value of 10Kohm is suitable for 100KHz bus speed. The board needs only a single supply voltage from 2.7V to 5.5V for operation. The board can be plugged on a Din-rail PCB holder.
To prevent damage to the board. Don't plug and/or unplug I2C cables on the board while a power supply still turns on. Turn off a power supply before plug and/or unplug I2C cables on the board.
