Overview
The AD7828LRS is a high-speed, 8-channel, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7828 series, which utilizes a half-flash conversion technique to achieve a fast conversion rate. It is designed for multichannel ADC systems, offering a cost-effective and space-saving solution. The AD7828LRS operates from a single 5 V supply and features a built-in track-and-hold function, making it suitable for digitizing full-scale signals of up to 10 kHz.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 8-bit |
| Conversion Rate | 2.5 µs/channel |
| Analog Input Range | 0 V to 5 V |
| Reference Inputs | |
| Supply Voltage | Single 5 V |
| Power Dissipation | 40 mW (typical) |
| Operating Temperature Range | 0°C to 70°C |
| Package Type | 28-Pin SSOP |
Key Features
- 4 or 8 analog input channels with a built-in track-and-hold function.
- Fast conversion rate of 2.5 µs per channel using a half-flash conversion technique.
- Single 5 V supply with low power dissipation of 40 mW (typical).
- Easy microprocessor interface using standard Chip Select (CS) and Read (RD) signals.
- Internal DAC for analog approximation and subtraction to achieve full 8-bit reading.
- Fully differential reference inputs to define the zero to full-scale input range.
Applications
The AD7828LRS is suitable for a variety of applications requiring high-speed, multichannel analog-to-digital conversion. These include:
- Data acquisition systems.
- Industrial control systems.
- Medical devices.
- Aerospace and defense systems.
- Automotive systems.
Q & A
- What is the conversion rate of the AD7828LRS?
The AD7828LRS has a conversion rate of 2.5 µs per channel. - How many analog input channels does the AD7828LRS have?
The AD7828LRS has 8 analog input channels. - What is the operating supply voltage of the AD7828LRS?
The AD7828LRS operates from a single 5 V supply. - What is the typical power dissipation of the AD7828LRS?
The typical power dissipation is 40 mW. - What is the package type of the AD7828LRS?
The AD7828LRS is available in a 28-Pin SSOP package. - What is the maximum analog input frequency the AD7828LRS can handle?
The AD7828LRS can handle full-scale signals of up to 10 kHz. - How does the AD7828LRS achieve its 8-bit resolution?
The AD7828LRS uses a half-flash conversion technique with an internal DAC to achieve its 8-bit resolution. - Is the AD7828LRS easy to interface with microprocessors?
Yes, the AD7828LRS is easy to interface with most popular microprocessors using standard Chip Select (CS) and Read (RD) signals. - What is the operating temperature range of the AD7828LRS?
The operating temperature range is 0°C to 70°C. - Can the reference inputs of the AD7828LRS be adjusted?
Yes, the reference inputs are fully differential and can be adjusted to vary the span of the analog input voltage.
