Part Number: AD7608BSTZ

Manufacturer: Analog Devices, Inc.

Description: IC DAS/ADC 18BIT 200K 64LQFP

Shipped from: Shenzhen/HK Warehouse

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The world of analog-to-digital data acquisition systems (DAS) is always changing, and the AD7608BSTZ is a very important part of this world. In this detailed guide, we’ll get into the details of the AD7608BSTZ, looking at its features, functions, and uses to give you a deep idea of what it can do.

● Precision at its Core

The AD7608BSTZ is designed to catch even the smallest differences in analog signals and turn them into high-resolution digital data. It does this with its impressive 18-bit resolution. This unbeatable accuracy is especially helpful in applications that require precise measurements, making sure that even the smallest changes are recorded accurately.

● Seamless Simultaneous Sampling

The simultaneous sampling function of the AD7608BSTZ is a game-changer because it lets all eight channels get data at the same time. This synchronized sampling gets rid of phase changes and differences in timing between channels, giving a more complete picture of the analog inputs. This ability is especially useful in situations where the correlation between multiple channels needs to be very exact.

● Velocity of Processing

The AD7608BSTZ can achieve output rates of up to 200 kSPS on all channels thanks to its high-speed sampling capabilities. This speed is important for real-time apps that need to get data quickly so that important information isn’t lost due to latency.

In essence, the AD7608BSTZ is a perfect mix of accuracy, synchrony, and speed, making it the best choice for projects that depend on accurate data acquisition and high-performance signal processing.

Working Principle of the AD7608BSTZ: Analog-to-Digital Conversion

A complex process called analog-to-digital conversion (ADC) is at the heart of the AD7608BSTZ. This is how analog inputs are turned into digital data. This conversion is a key step in putting physical amounts from the real world into a format that can be processed and examined digitally.

Successive Approximation Method: Breaking Down the Process

For analog-to-digital conversion, the AD7608BSTZ uses a method called “successive approximation.” This method is commonly used. This method is a step-by-step process that narrows down the possible digital number that matches the given analog input.

Here’s how it works:

  1. Initialization:When the ADC is first turned on, the middle number of its digital range is used as a first guess. For instance, in an 18-bit ADC, the original approximation might be 217 (131,072).
  2. Comparison and Adjustment:
    • The ADC then compares this approximation to the analog input voltage.
    • If the initial approximation is greater than the input voltage, the ADC adjusts the approximation downward.
    • Conversely, if the initial approximation is less than the input voltage, the ADC adjusts the approximation upward.
  3. Successful Bit Refinement:
    • The ADC proceeds to refine its approximation, bit by bit.
    • It starts with the most significant bit (MSB) and moves toward the least significant bit (LSB).
    • At each step, the ADC compares the refined approximation to the analog input voltage and adjusts the bit based on the comparison result.
  4. Iterative Process:
    • This iterative process continues until all bits have been refined.
    • The final, refined digital value is the closest representation of the analog input voltage within the ADC’s resolution.

The successive approximation method works well because it gets close to the real digital number quickly and uses less computing power than other methods. It works best when high precision is needed because it uses several binary comparisons and adjustments to find the right value.

In short, the AD7608BSTZ changes analog signals into digital ones by using the successive approximation method to improve digital approximations step by step. This clever process makes sure that analog signals are converted into digital signals correctly. This is the basis for accurate data collection and analysis.

Understanding the AD7608BSTZ

The AD7608BSTZ is a remarkable 18-bit, 8-channel simultaneous sampling analog-to-digital data acquisition system that has changed the business. This powerful gadget has a lot of useful features that make it an essential tool for many different tasks.

Key Features:

  1. Analog Input Clamp Protection:The device has strong analog input clamp safety, which means it can handle input voltages of up to 16.5 V. This feature makes the gadget more durable and reliable than ever and protects it from voltage spikes.
  2. Antialiasing Filter:The AD7608BSTZ’s second-order antialiasing filter is a key part of ensuring accurate signal capture. With a 3 dB cutoff frequency of 22 kHz and a 40 dB antialias rejection at a sampling rate of 200 kSPS, this filter reduces unwanted noise and distortion, resulting in high-quality sampled data.
  3. High-Speed Sampling:All of the lines on the AD7608BSTZ can reach a throughput rate of up to 200 kSPS, which is a very high rate. With this high-speed sampling feature, time-sensitive apps can get data in real-time.
  4. 18-Bit Charge Redistribution Successive Approximation ADC:The 18-bit ADC is the most important part of the gadget because it does accurate analog-to-digital conversions. This accuracy is essential for apps that need measurements with a high level of detail.
  5. Flexible Digital Filter:The AD7608BSTZ has a digital filter that can be changed to meet the needs of a particular application. This filter improves the quality of the data by increasing the signal-to-noise ratio (SNR) and decreasing the 3 dB bandwidth.
  6. On-Chip Reference and Reference Buffer:The device is easier to set up because it has a 2.5 V reference and a reference memory. This trait gets rid of the need for external reference parts, which simplifies the design process as a whole.
  7. Single 5 V Supply Operation:The AD7608BSTZ simplifies power needs by running on a single 5 V supply and being compatible with normal power sources.
  8. Bipolar Input Signal Accommodation:Both 10 V and 5 V true bipolar data can be sent to the device. This makes the system work with a wide variety of data sources.
  9. High Input Impedance:The analog input impedance of the AD7608BSTZ stays at 1 M at all sampling rates. Because of this high input impedance, driver op amps and extra bipolar supplies are not needed.


The versatility of the AD7608BSTZ makes it suitable for various applications across industries:

  • Industrial Automation:Acquiring accurate data is essential for keeping track of and controlling business processes. The AD7608BSTZ is excellent for uses like process control and equipment monitoring because it is very real and can take samples at the same time.
  • Medical Instrumentation:Acquiring accurate data is the most important thing for medical devices like patient monitors and diagnostic tools. The high-resolution ADC and low noise of the AD7608BSTZ help medical apps make accurate measurements.
  • Test and Measurement:Research laboratories and testing facilities benefit from the AD7608BSTZ’s high-speed sampling and flexibility. It can be used for capturing transient signals, analyzing waveforms, and conducting experiments.
  • Energy Management:Monitoring and managing energy consumption requires accurate data acquisition. The AD7608BSTZ’s precise measurements find application in energy monitoring systems and smart grid solutions.


Redefining data acquisition with unmatched precision and real-time insights, the AD7608BSTZ stands as a beacon of excellence. Its 18-bit resolution and simultaneous sampling capture even the subtlest signals, making it indispensable for precision-focused applications.

With a rapid 200 kSPS throughput and an adaptable digital filter, it seamlessly fits various needs, from industrial automation to medical uses. For more details and orders, connect with ICRFQ, China’s top electronic component seller. Explore the AD7608BSTZ’s potential for informed decisions in research, energy management, and beyond. Step into innovation, integrate the AD7608BSTZ and lead with accuracy.

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Kevin Chen