Overview
The MX7828KN, produced by Analog Devices Inc./Maxim Integrated, is a high-speed, multichannel analog-to-digital converter (ADC). This component is part of the AD7828 series, which offers a choice of eight multiplexed analog input channels. The AD7828 is designed for applications requiring fast and accurate analog-to-digital conversion with minimal power consumption.
The device operates on a single 5 V supply and features a built-in track-and-hold function, allowing it to handle full-scale signals of up to 10 kHz bandwidth. The half-flash conversion technique used in the AD7828 provides a fast conversion rate of 2.5 µs per channel, making it suitable for high-speed data acquisition systems.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Number of Channels | 8 | Multiplexed analog inputs | |
| Resolution | 8 | Bits | |
| Total Unadjusted Error | ±1/2 LSB max | ||
| Conversion Rate | 2.5 µs/channel | Half-flash conversion technique | |
| Signal Handling | 10 kHz | Full-scale signals with 157 mV/µs slew rate | |
| Supply Voltage | 5 V | Single supply operation | |
| Power Dissipation | 40 mW (typ) | ||
| Package Options | 28-lead DIP, 28-terminal surface-mount |
Key Features
- Multiplexed Analog Inputs: The AD7828 offers eight multiplexed analog input channels, providing a cost-effective and space-saving solution for multichannel ADC systems.
- Fast Conversion Rate: With a conversion rate of 2.5 µs per channel, the AD7828 supports high-speed data acquisition, allowing for a per-channel sampling frequency of up to 50 kHz.
- Built-In Track-and-Hold Function: This feature enables the handling of full-scale signals up to 10 kHz bandwidth with a slew rate of 157 mV/µs.
- Tight Error Specifications: The device has tight total unadjusted error specifications and good channel-to-channel matching, eliminating the need for user trims.
- Single 5 V Supply: Simplifies system power requirements with a single 5 V supply voltage.
- Easy Microprocessor Interface: The AD7828 features a fast and easy-to-use digital interface that allows connection to most popular microprocessors with minimal external components, and no clock signal is required for the ADC.
Applications
- Data Acquisition Systems: Suitable for high-speed data acquisition in various industrial, medical, and scientific applications.
- Industrial Control Systems: Used in control systems that require fast and accurate analog-to-digital conversion.
- Medical Devices: Applicable in medical devices that need to process multiple analog signals quickly and accurately.
- Aerospace and Defense: Employed in aerospace and defense applications where high-speed data conversion is critical.
Q & A
- What is the number of analog input channels in the AD7828?
The AD7828 has eight multiplexed analog input channels.
- What is the conversion rate of the AD7828?
The conversion rate of the AD7828 is 2.5 µs per channel.
- What is the maximum signal handling frequency of the AD7828?
The AD7828 can handle full-scale signals up to 10 kHz bandwidth.
- What is the supply voltage requirement for the AD7828?
The AD7828 operates on a single 5 V supply voltage.
- Does the AD7828 require a clock signal for operation?
No, the AD7828 does not require a clock signal for operation due to its half-flash conversion technique.
- What are the package options available for the AD7828?
The AD7828 is available in 28-lead DIP and 28-terminal surface-mount packages.
- What is the typical power dissipation of the AD7828?
The typical power dissipation of the AD7828 is 40 mW.
- How does the AD7828 interface with microprocessors?
The AD7828 features a fast and easy-to-use digital interface that allows connection to most popular microprocessors with minimal external components.
- What are the key error specifications of the AD7828?
The AD7828 has tight total unadjusted error specifications of ±1/2 LSB max.
- In what types of applications is the AD7828 commonly used?
The AD7828 is commonly used in data acquisition systems, industrial control systems, medical devices, and aerospace and defense applications.
