The AD7607BSTZ is a high – performance, multi – channel, simultaneous sampling analog – to – digital converter (ADC) manufactured by Analog Devices. It is designed to meet the requirements of various applications that demand high – precision data acquisition.
Key Functions
1. Simultaneous Sampling
The AD7607BSTZ features 8 analog input channels that can sample input signals simultaneously. This is crucial in applications where multiple related signals need to be measured at the same instant, such as in power system monitoring, motor control, and multi – axis position sensing. Simultaneous sampling ensures that the phase relationships between different input signals are accurately captured, which is essential for subsequent signal processing and analysis.
2. High – Resolution Conversion
It provides 16 – bit resolution, enabling it to convert analog input signals into digital data with high precision. The high resolution allows for the detection of small changes in the input signals, which is beneficial in applications that require accurate measurement of physical quantities, such as temperature, pressure, and voltage. The effective number of bits (ENOB) is typically around 15 bits, providing a good signal – to – noise ratio (SNR) and minimizing quantization errors.
3. Wide Input Voltage Range
The ADC supports a wide input voltage range. It can handle bipolar input signals from – 10 V to + 10 V or unipolar input signals from 0 V to + 10 V or 0 V to + 5 V. This flexibility in input voltage range makes it suitable for a variety of input signal sources and applications, eliminating the need for additional signal conditioning circuits in many cases.
4. On – Chip Signal Conditioning
The AD7607BSTZ includes on – chip anti – aliasing filters and sample – and – hold circuits. The anti – aliasing filters help to remove high – frequency noise and prevent aliasing, ensuring that the input signals are properly conditioned before conversion. The sample – and – hold circuits capture the input signal levels at the sampling instant and hold them constant during the conversion process, enabling accurate and reliable conversion.
5. Parallel and Serial Data Output
It offers both parallel and serial data output interfaces. The parallel interface allows for high – speed data transfer, making it suitable for applications that require real – time data processing. The serial interface, on the other hand, provides flexibility in terms of system integration, especially when communicating with microcontrollers or other digital devices with limited pin availability. The serial interface can operate in SPI (Serial Peripheral Interface) or similar communication protocols.
6. Conversion Control and Timing
The chip has a dedicated conversion start input pin (CONVST) that can be used to initiate the analog – to – digital conversion process. It also supports both single – shot and continuous conversion modes. In single – shot mode, a single conversion is performed upon the receipt of a CONVST pulse. In continuous conversion mode, the ADC continuously samples and converts the input signals at a rate determined by the system clock.
7. Overvoltage and Undervoltage Protection
The AD7607BSTZ is equipped with overvoltage and undervoltage protection features. These protections help to safeguard the chip from damage due to abnormal input voltage levels, enhancing the reliability and durability of the device in harsh operating environments.
8. Low Power Consumption
It is designed to consume relatively low power, making it suitable for battery – powered or power – sensitive applications. The power consumption can be further optimized by using power – down modes, where the chip can enter a low – power state when not actively performing conversions.
Key Functions
1. Simultaneous Sampling
The AD7607BSTZ features 8 analog input channels that can sample input signals simultaneously. This is crucial in applications where multiple related signals need to be measured at the same instant, such as in power system monitoring, motor control, and multi – axis position sensing. Simultaneous sampling ensures that the phase relationships between different input signals are accurately captured, which is essential for subsequent signal processing and analysis.
2. High – Resolution Conversion
It provides 16 – bit resolution, enabling it to convert analog input signals into digital data with high precision. The high resolution allows for the detection of small changes in the input signals, which is beneficial in applications that require accurate measurement of physical quantities, such as temperature, pressure, and voltage. The effective number of bits (ENOB) is typically around 15 bits, providing a good signal – to – noise ratio (SNR) and minimizing quantization errors.
3. Wide Input Voltage Range
The ADC supports a wide input voltage range. It can handle bipolar input signals from – 10 V to + 10 V or unipolar input signals from 0 V to + 10 V or 0 V to + 5 V. This flexibility in input voltage range makes it suitable for a variety of input signal sources and applications, eliminating the need for additional signal conditioning circuits in many cases.
4. On – Chip Signal Conditioning
The AD7607BSTZ includes on – chip anti – aliasing filters and sample – and – hold circuits. The anti – aliasing filters help to remove high – frequency noise and prevent aliasing, ensuring that the input signals are properly conditioned before conversion. The sample – and – hold circuits capture the input signal levels at the sampling instant and hold them constant during the conversion process, enabling accurate and reliable conversion.
5. Parallel and Serial Data Output
It offers both parallel and serial data output interfaces. The parallel interface allows for high – speed data transfer, making it suitable for applications that require real – time data processing. The serial interface, on the other hand, provides flexibility in terms of system integration, especially when communicating with microcontrollers or other digital devices with limited pin availability. The serial interface can operate in SPI (Serial Peripheral Interface) or similar communication protocols.
6. Conversion Control and Timing
The chip has a dedicated conversion start input pin (CONVST) that can be used to initiate the analog – to – digital conversion process. It also supports both single – shot and continuous conversion modes. In single – shot mode, a single conversion is performed upon the receipt of a CONVST pulse. In continuous conversion mode, the ADC continuously samples and converts the input signals at a rate determined by the system clock.
7. Overvoltage and Undervoltage Protection
The AD7607BSTZ is equipped with overvoltage and undervoltage protection features. These protections help to safeguard the chip from damage due to abnormal input voltage levels, enhancing the reliability and durability of the device in harsh operating environments.
8. Low Power Consumption
It is designed to consume relatively low power, making it suitable for battery – powered or power – sensitive applications. The power consumption can be further optimized by using power – down modes, where the chip can enter a low – power state when not actively performing conversions.
