66 lines
1.9 KiB
Markdown
66 lines
1.9 KiB
Markdown
<!--
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---
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name: ADC Differential Pi
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class: board
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type: adc
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formfactor: pHAT
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manufacturer: AB Electronics UK
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description: 8 channel Analogue to Digital Converter
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url: https://www.abelectronics.co.uk/p/65/adc-differential-pi-raspberry-pi-analogue-to-digital-converter
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github: https://github.com/abelectronicsuk
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schematic: https://www.abelectronics.co.uk/docs/pdf/schematic-adc-differential-pi.pdf
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buy: https://www.abelectronics.co.uk/p/65/adc-differential-pi-raspberry-pi-analogue-to-digital-converter
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image: 'ab-adc-differential-pi.png'
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pincount: 40
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eeprom: no
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power:
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'1':
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'2':
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ground:
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'6':
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'9':
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'14':
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'20':
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'25':
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'30':
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'34':
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'39':
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pin:
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'3':
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mode: i2c
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'5':
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mode: i2c
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i2c:
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'0x68':
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alternate: [ '0x69', '0x6A', '0x6B', '0x6C', '0x6D', '0x6E', '0x6F' ]
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name: MCP3424
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device: MCP3424
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'0x69':
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alternate: [ '0x68', '0x6A', '0x6B', '0x6C', '0x6D', '0x6E', '0x6F' ]
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name: MCP3424
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device: MCP3424
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-->
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#ADC Differential Pi
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The ADC Differential Pi is an 8 channel 18 bit analogue to digital converter designed to work with the Raspberry Pi. The ADC Differential Pi is based on two Microchip MCP3424 A/D converters each containing 4 analogue inputs. The MCP3424 is a delta-sigma A/D converter with low noise differential inputs.
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##Features
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- 8 x 18-bit differential inputs
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- Control via the Raspberry Pi I2C port
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- Stack up to 4 ADC Differential Pi boards on a single Raspberry Pi
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- Jumper selectable I2C addresses (8 choices)
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- Buffered 5V I2C port
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- Based on the MCP3424 from Microchip Technologies Inc
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- Input range of ±2.048V
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- On-board 2.048V reference voltage (Accuracy ± 0.05%, Drift: 15 ppm/°C)
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- On-Board Programmable Gain Amplifier (PGA): Gains of 1, 2, 4 or 8
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- Programmable Data Rate Options:
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- 3.75 SPS (18 bits)
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- 15 SPS (16 bits)
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- 60 SPS (14 bits)
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- 240 SPS (12 bits)
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- One-Shot or Continuous Conversion Options
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Python, C, C++, Node.js and Windows 10 IOT libraries are available on GitHub.
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