The ADS1246IPWR is a high-performance analog-to-digital converter with the following main functions:
Signal Conversion
High Resolution and Precision: It is a 24-bit delta-sigma ADC, providing extremely high resolution for accurately converting analog signals to digital values, which is crucial for applications requiring precise measurement of small signal changes, such as in scientific research equipment and high-precision sensors.
Programmable Gain Amplifier (PGA): The built-in PGA offers selectable gains, typically from 1 to 128, allowing the device to amplify small input signals before conversion, increasing the measurement sensitivity and accuracy. It is especially useful when dealing with weak analog signals from sensors like thermocouples, thermistors, and RTDs.
Sampling and Data Rate
Flexible Sampling Rate: The data rate is programmable up to 2 ksps (samples per second), enabling the user to adjust the sampling frequency according to the specific requirements of the application. A lower sampling rate can be chosen for applications where the signal changes slowly to reduce power consumption and data processing requirements, while a higher sampling rate is suitable for capturing fast-changing signals.
Single-Cycle Settling: The delta-sigma modulator and adjustable digital filter in the ADS1246IPWR can settle in only one cycle, ensuring fast and accurate conversion even at high data rates. This feature is beneficial for applications that require real-time data acquisition and processing, such as in industrial control systems and audio signal processing.
Input and Multiplexing
Single-Channel Input: It has a single analog input channel, which is suitable for applications that only need to measure one analog signal at a time, simplifying the circuit design and reducing the complexity of the system.
Sensor Burn-Out Detection: The input multiplexer includes a sensor burn-out detection function, which can monitor the status of the connected sensor and detect if the sensor has failed or burned out. This helps to improve the reliability and safety of the system by providing early warning of sensor malfunctions.
Interface and Power Supply
SPI-Compatible Serial Interface: It uses an SPI-compatible serial interface for easy communication with microcontrollers and other digital devices. The SPI interface requires only a few pins for connection and provides a simple and efficient way to transfer data between the ADC and the host device, reducing the complexity of the circuit design and the number of pins required.
Wide Supply Voltage Range: The device can operate with a dual supply voltage, typically ±2.5 V for analog supply and 2.7 V to 5.25 V for digital supply, providing flexibility in power supply options and making it suitable for a wide range of applications with different power supply requirements.
Signal Conversion
High Resolution and Precision: It is a 24-bit delta-sigma ADC, providing extremely high resolution for accurately converting analog signals to digital values, which is crucial for applications requiring precise measurement of small signal changes, such as in scientific research equipment and high-precision sensors.
Programmable Gain Amplifier (PGA): The built-in PGA offers selectable gains, typically from 1 to 128, allowing the device to amplify small input signals before conversion, increasing the measurement sensitivity and accuracy. It is especially useful when dealing with weak analog signals from sensors like thermocouples, thermistors, and RTDs.
Sampling and Data Rate
Flexible Sampling Rate: The data rate is programmable up to 2 ksps (samples per second), enabling the user to adjust the sampling frequency according to the specific requirements of the application. A lower sampling rate can be chosen for applications where the signal changes slowly to reduce power consumption and data processing requirements, while a higher sampling rate is suitable for capturing fast-changing signals.
Single-Cycle Settling: The delta-sigma modulator and adjustable digital filter in the ADS1246IPWR can settle in only one cycle, ensuring fast and accurate conversion even at high data rates. This feature is beneficial for applications that require real-time data acquisition and processing, such as in industrial control systems and audio signal processing.
Input and Multiplexing
Single-Channel Input: It has a single analog input channel, which is suitable for applications that only need to measure one analog signal at a time, simplifying the circuit design and reducing the complexity of the system.
Sensor Burn-Out Detection: The input multiplexer includes a sensor burn-out detection function, which can monitor the status of the connected sensor and detect if the sensor has failed or burned out. This helps to improve the reliability and safety of the system by providing early warning of sensor malfunctions.
Interface and Power Supply
SPI-Compatible Serial Interface: It uses an SPI-compatible serial interface for easy communication with microcontrollers and other digital devices. The SPI interface requires only a few pins for connection and provides a simple and efficient way to transfer data between the ADC and the host device, reducing the complexity of the circuit design and the number of pins required.
Wide Supply Voltage Range: The device can operate with a dual supply voltage, typically ±2.5 V for analog supply and 2.7 V to 5.25 V for digital supply, providing flexibility in power supply options and making it suitable for a wide range of applications with different power supply requirements.
