AD7572AANZ03 vs AD9255BCPZRL7-80
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| Category | Data Acquisition - Analog to Digital Converters (ADC) | Data Acquisition - Analog to Digital Converters (ADC) |
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. |
| Description | IC ADC 12BIT SAR 24DIP | IC ADC 14BIT PIPELINED 48LFCSP |
| Package | Bulk | Tray |
| Series | - | - |
| Features | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | 24-DIP (0.300\", 7.62mm) | 48-VFQFN Exposed Pad, CSP |
| Supplier Device Package | 24-PDIP | 48-LFCSP-VQ (7x7) |
| Reference Type | Internal | External, Internal |
| Sampling Rate (Per Second) | - | 80M |
| Data Interface | Parallel | LVDS - Parallel |
| Number of Bits | 12 | 14 |
| Voltage - Supply, Analog | 5V, -11.4V ~ 16.5V | 1.7V ~ 1.9V |
| Voltage - Supply, Digital | +5V, -11.4V ~ 16.5V | 1.7V ~ 1.9V |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Differential |
| Configuration | ADC | S/H-ADC |
| Ratio - S/H:ADC | - | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | Pipelined |
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1. What is the main purpose of ADC?
The main purpose of ADC is to convert the input analog signal into a digital signal.
ADC, or analog-to-digital converter, is mainly used to convert continuously changing analog signals into discrete digital signals. The implementation process of ADC usually includes four steps: sampling, holding, quantization, and encoding.
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2. How many types of ADC are there?
The types of ADC (Analog-to-Digital Converter) mainly include:
1. Integral ADC: Its working principle is to convert the input voltage into time (pulse width signal) or frequency (pulse frequency), and then obtain the digital value by the timer/counter. The advantage of the integral ADC is that it can obtain high resolution with a simple circuit and has strong anti-interference ability, but the disadvantage is that the conversion rate is extremely low because the conversion accuracy depends on the integration time.
2. Successive approximation type (SAR ADC): The successive approximation ADC is one of the most common architectures. Its basic principle is to convert by gradually approximating the value of the analog input signal. The advantages of the successive approximation ADC are high speed and low power consumption. It is cheap at low resolution, but expensive at high precision.
3. Parallel comparison type/serial-parallel comparison type ADC: The parallel comparison type AD uses m -
3. When is ADC used?
ADC (Analog-to-Digital Converter) is widely used in a variety of scenarios, including but not limited to:
Sensor interface: For example, temperature sensors, pressure sensors, and light sensors, ADC converts analog voltages into digital signals for the use of digital thermometers, temperature control systems, barometers, air pressure sensing systems, light intensity detection and control systems.
Audio signal processing: In microphones, ADC converts analog audio signals into digital signals for digital audio processing, recording, and playback.
Medical equipment: Such as electrocardiograms (ECGs) and oximeters, ADC converts analog signals of ECG signals and blood oxygen saturation into digital signals for heart health monitoring and diagnosis and blood oxygen level monitoring.
Data acquisition system: In various applications that need to collect data from analog signals, ADC is used to convert analog signals into digital signals for storage, processing, and analysis. -
4. What is the difference between the input and output of an ADC?
The input of ADC (Analog-to-Digital Converter) is analog quantity and the output is digital quantity.
The main function of ADC is to convert continuous analog signal into discrete digital signal. In electronic systems, analog signal usually refers to continuously changing voltage or current, such as the signal obtained from microphone or sensor. The amplitude and frequency of these analog signals can change continuously, while digital signals are composed of a series of discrete values, usually expressed in binary form.
Input: The input of ADC receives analog signals, which can be in the form of continuously changing physical quantities such as voltage and current. The amplitude and frequency of analog signals can change continuously, such as the voltage range from 0V to 5V.
Output: The output of ADC is digital signal, which is composed of a series of discrete values, usually expressed in binary form. The advantage of digital signals is that they can be calculated and processed quic
