AD7478AARMZ-REEL7 vs AD7170BCPZ-REEL7
| Part Number |
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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 8BIT SAR 8MSOP | IC ADC 12BIT SIGMA-DELTA 10LFCSP |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | - | - |
| Features | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 105°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 10-VFDFN Exposed Pad, CSP |
| Supplier Device Package | 8-MSOP | 10-LFCSP-WD (3x3) |
| Reference Type | Supply | External |
| Sampling Rate (Per Second) | 1.2M | - |
| Data Interface | SPI, DSP | SPI |
| Number of Bits | 8 | 12 |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Number of Inputs | 1 | 1 |
| Input Type | Single Ended | Differential |
| Configuration | S/H-ADC | ADC |
| Ratio - S/H:ADC | 1:1 | - |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | Sigma-Delta |
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1. How does ADC convert analog to digital?
The technology that converts analog sound signals into digital signals is called analog-to-digital conversion technology (Analog to Digital Converter, referred to as ADC). The function of ADC is to convert continuously changing analog signals into discrete digital signals. The process of analog-to-digital conversion can be completed by steps such as sampling, holding, quantization, and encoding.
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2. 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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3. How to convert analog to digital without ADC?
Analog to digital conversion without ADC can be achieved through PWM circuit. This method is suitable for those main control chips without built-in ADC, which needs to be solved by two GPIOs and an operational amplifier. The basic principle is to use an integral circuit to convert the PWM wave into a smooth DC voltage, and then continuously adjust the PWM duty cycle by comparing it with the voltage to be measured until the output of the comparator changes from 0 to 1, and record the current PWM duty cycle, thereby realizing the measurement of the analog voltage.
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4. 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.
