High-Precision ADC HAT For Raspberry Pi (10-Channel 32-Bit)

This 10-channel 32-bit High Precision ADC HAT for the Raspberry Pi offers an accurate solution for reading analogue sensors in your project.

The HAT uses a Ti ADS1263 chip and offers a host of helpful features for both reading sensor data and supporting your overall project. The AD input header can read both single-end inputs or differential inputs with a pinout that matches most Waveshare sensors. Headers are also provided for host control and ADC ground reference configuration.

Screw terminals are provided for manually wiring the sensor inputs of your choice, whilst the GPIO headers ensure you have full access to the remaining pins for your project.

The board comes complete with standoffs to ensure a stable fit for your Raspberry Pi.

Features

• Adopts ADS1263 chip
  • Low noise, low-temperature drift
  • 10-ch 32-bit high precision ADC (5-ch differential input)
  • 38.4kSPS Max sampling rate
  • Embedded 24-bit auxiliary ADC
  • Internal ADC test signal
  • IDAC
  • 2.5V internal reference voltage
  • 8x multiplexing GPIO
  • PGA (32 times Max)
• Onboard AD header input – compatible with Waveshare sensor pinout (or use your own sensors, following the pinout)
• Onboard AD screw terminal input – allows connecting analog signal and analog power supply, general-purpose interface
• Onboard control header – makes it easy to control the module via other hosts in addition to the Raspberry Pi
• Three-wire RTD (resistor temperature detector) circuit, enabled by soldering 0R resistor
• Online development resources

Specifications

• Resolution: 32 Bits
• Sampling Rate (Max): 38.4 kSPS
• Bus: SPI
• Input Type: Differential, Single-end
• Input Voltage Range (Max): 2.5V, 5V
• Input Voltage Range (Min): -2.5V, 0V
• Input Channels: 10
• PGA Magnification (max): 32
• Structure: Delta-Sigma
• Reference Voltage: Internal, External

Resources

• Product Wiki

Package Contents

• 1x High-Precision AD HAT
• 1x RPi screws pack

Raspberry Pi, sensors and wires not included

What’s Onboard

1) Raspberry Pi GPIO header
– For connecting Raspberry Pi
2) AD input (screw terminal)
– General-purpose
3) AD input (header)
– For connecting sensor modules, Waveshare standard compliant
4) Control input (header)
– Allows control by other hosts
5) Power configuration resistor
6) RTD configuration resistor
7) ADC ground reference configuration
– COM is used as negative input terminal on AD single-end input mode, connect it to GND or external reference voltage
8) 7.3728M crystal
9) Power supply section
10) RTD section
11) Input filtering section
12) ADS1263
– 32-bit high precision ADC, 10-ch (5-ch differential input)

Pinout