Overview
The AD7820KN is a high-speed, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the LC2MOS family and is designed to be compatible with microprocessors. It features a track/hold function, making it suitable for a variety of high-speed data acquisition applications. Although the AD7820KN is currently listed as obsolete and no longer manufactured, it remains an important component in legacy systems and for educational purposes.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD7820KN |
| Package | 20-DIP (0.300, 7.62mm) |
| Number of Pins | 20 |
| Number of Bits | 8 |
| Sampling Rate | 400 ksps |
| Polarity | Unipolar |
| Minimum Supply Voltage | 4.75 V |
| Supply Voltage | 5 V |
| Maximum Supply Voltage | 5.25 V |
| Minimum Analog Input Voltage | -0.3 V |
| Height | 3.3 mm |
| Length | 26.16 mm |
| Width | 6.35 mm |
Key Features
The AD7820KN features several key attributes that make it a robust choice for high-speed data acquisition:
- High-Speed Conversion: The ADC operates at a sampling rate of 400 ksps, making it suitable for applications requiring rapid data conversion.
- Microprocessor Compatibility: Designed to be compatible with microprocessors, it simplifies integration into various digital systems.
- Track/Hold Function: This feature allows for accurate sampling of the analog input signal, ensuring reliable data acquisition.
- Unipolar Operation: The ADC operates in unipolar mode, which is beneficial for applications where only positive voltage inputs are expected.
- Compact Packaging: The 20-DIP package is compact and easy to integrate into various board designs.
Applications
The AD7820KN is suitable for a variety of applications, including:
- Data Acquisition Systems: Its high-speed conversion and track/hold function make it ideal for data acquisition systems that require rapid and accurate sampling.
- Industrial Control Systems: It can be used in industrial control systems where precise and fast analog-to-digital conversion is necessary.
- Medical Devices: The ADC can be integrated into medical devices that require high-speed data conversion, such as patient monitoring systems.
- Aerospace and Defense: Although obsolete, it may still be found in legacy systems within these sectors due to its reliability and performance.
Q & A
- What is the AD7820KN?
The AD7820KN is an 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc.
- What is the sampling rate of the AD7820KN?
The AD7820KN has a sampling rate of 400 ksps.
- What is the supply voltage range for the AD7820KN?
The supply voltage range is from 4.75 V to 5.25 V, with a nominal voltage of 5 V.
- Is the AD7820KN still in production?
No, the AD7820KN is listed as obsolete and is no longer manufactured.
- What package type does the AD7820KN come in?
The AD7820KN comes in a 20-DIP (0.300, 7.62mm) package.
- What is the minimum analog input voltage for the AD7820KN?
The minimum analog input voltage is -0.3 V.
- Is the AD7820KN compatible with microprocessors?
Yes, the AD7820KN is designed to be compatible with microprocessors.
- What is the track/hold function in the AD7820KN?
The track/hold function allows for accurate sampling of the analog input signal.
- What are some common applications of the AD7820KN?
Common applications include data acquisition systems, industrial control systems, medical devices, and aerospace and defense systems.
- Where can I find detailed specifications for the AD7820KN?
Detailed specifications can be found in the datasheet available on the Analog Devices website or through distributors like Mouser and Digi-Key.
