Waveshare High-Precision AD/DA Board User Manual

High-Precision AD-DA User Manual
1
Revision: 1.2. Date: October 30 2015. Author: Zhou Jie. Editor: Felix
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High-Precision AD/DA Board
User Manual
Overview
There's no AD/DA function on the
Raspberry Pi GPIO interface, this may
troubled you in the Pi development.
However, it won't be a problem anymore.
The High-Precision AD/DA Board allows you
to add high-precision AD/DA functions to
the Raspberry Pi.
Supported Pi
 Raspberry Pi 1 Model A+
 Raspberry Pi 1 Model B+
 Raspberry Pi 2 Model B
Features
 Onboard ADS1256, 8ch 24bit high-precision ADC (4ch differential input), 30ksps sampling rate
 Onboard DAC8532, 2ch 16bit high-precision DAC
 Onboard input interface via pinheaders, for connecting analog signal
 the pinout is compatible with Waveshare sensor interface standard, easy to connect
various analog sensor modules
 Onboard input/output interface via screw terminals, for connecting analog/digital signal
 Features AD/DA detect circuit, easy for signal demonstration

Waveshare High-Precision AD/DA Board Specifications

General

Analog Input Channels	2
Analog Output Channels	2
ADC Resolution	16-bit
DAC Resolution	16-bit
Interface	SPI
Output Voltage Range (DA)	0-5V
Operating Voltage	5V
Input Voltage Range (AD)	±10V
Dimensions	65mm
AD/DA Chip	AD/DA chip: AD/DA chip: AD7606 (ADC), DAC8532 (DAC)

Summary

Overview

What's on Board

Symbol Descriptions

Basic Operation of Raspberry Pi

How to Use Raspberry Pi Image

Guide to downloading and writing the Raspbian OS image to an SD card for the Raspberry Pi.

How to Use the Terminal of Raspberry Pi

Instructions for accessing the Raspberry Pi's command-line interface via SSH or direct connection.

Getting Started

Analog to Digital Conversion

Steps for connecting the board and performing analog to digital conversion tests using provided code.

Digital to Analog Conversion

Steps for connecting the board and performing digital to analog conversion tests using provided code.

Interface Definition

Revision History