Description
Module with high precision A/C converter in the form of shields for GPIO connectors of Raspberry Pi. It has 8 18-bit channels, analog outputs operating in Differential mode with a voltage from - 2,048 V to 2,048 V. It communicates through the SPI interface. It works with the Raspberry, version A+ / B+ / 2B / 3B / 3B+ / Zero / Zero W.
Based on the two systems of MCP3424. Unlikethe ADC Pi, the module has no voltage divider and the inputs can be used to measure the differences in voltagefrom -2,048 V to 2,048 V. This allows you to use your own voltage divider for measuring higher voltages.
ADC PI communicates with minicomputer via the I2C bus, giving 8 analog inputs. Built-in converter allows you to connect any I2C module operating with a voltage of 5 V. The board allows to select the I2C address using soldering jumper. This allows you to connect up to 4 ADC PI boards to one Raspberry and allows you to use even 32 GPIO inputs. The strngthening system allows you to strengthen 1x, 2x, 4x or 8x before the conversion. Data transfer rate, and the resolution can be configured by I2C. The manufacturer providescomparison of various work parameters.
Unused inputs should be connected to ground.
The subject of the sale is a shield,the Raspberry Pi Zero and spacers can be purchased separately.
Specification
- Supply voltage: 5 V
- A/C converter input:from -2,048 V to 2,048 V
- The maximum A/C input voltage: from Vss - 0.4 V to Vdd + 0.4 V
- Current of individual inputs: 2 mA
- I2C operating voltage: 5 V
- The I2C port current: 100 mA
- System: 2 x MCP3424
- 8 differential 18-bit channels of A/C converter
- Control via the I2C port
- The possibility to connect up to 4 shields
- Built-in reference voltage: 2,048 V
- Built-in amplifier: 1x, 2x, 4x, 8x
- Programmable data transfer rate:
- 3, 75 SPS - 18-bit
- 15 SPS - 16 bit
- 60 SPS - 14 bit
- 240 SPS - 12 bit
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