AD7478AARMZ-REEL7 vs AD7788ARMZ-REEL
| 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 16BIT SIGMA-DELTA 10MSOP |
| Package | Tape & Reel (TR) | Tube |
| Series | - | - |
| Features | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) | 10-TFSOP, 10-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 8-MSOP | 10-MSOP |
| Reference Type | Supply | External |
| Sampling Rate (Per Second) | 1.2M | 16.6 |
| Data Interface | SPI, DSP | SPI, DSP |
| Number of Bits | 8 | 16 |
| Voltage - Supply, Analog | 2.7V ~ 5.25V | 2.5V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.5V ~ 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. What is analog data acquisition?
Analog data acquisition refers to the process of converting continuously changing signals of physical quantities into digital signals so that computers can process and record these signals. This process involves the use of an analog quantity collector, which is a hardware device that can convert analog signals of physical quantities into digital signals and then transmit them to a computer for processing and recording.
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4. 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.
