Overview
The AD7822BN is an 8-bit, 2 MSPS (Mega Samples Per Second), single-channel, pipelined analog-to-digital converter (ADC) produced by Analog Devices Inc. This component integrates a multiplexer, sample-and-hold, and ADC in a single package, making it a compact and efficient data acquisition solution. It is designed for high-speed operation and is compatible with various microcontrollers and digital systems that support parallel data interfaces.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 8-bit |
| Sampling Rate | 2 MSPS |
| Analog Input Channels | Single-ended, 1 channel |
| Digital Interface | Parallel digital data interface |
| Supply Voltage | 2.7V to 5V (analog and digital) |
| Operating Temperature Range | -40°C to 85°C |
| Conversion Time | 420 ns |
| Input Range | 0 V to 2 V p-p (VDD = 3 V ± 10%), 0 V to 2.5 V p-p (VDD = 5 V ± 10%) |
| Package Options | 20-lead PDIP, 20-lead SOIC, 20-lead TSSOP |
Key Features
- Pipelined architecture for high-speed operation
- Integrated multiplexer, sample-and-hold, and ADC in a single package
- External or internal reference options
- Flexible parallel interface with EOC (End of Conversion) pulse for standalone operation
- Automatic power-down at the end of conversion
- Wide operating supply range and temperature range
- Analog input span adjustment using the VMID pin
Applications
- Data acquisition systems
- Instrumentation and control equipment
- Industrial automation
- Medical devices
- Test and measurement equipment
- DSP front ends and subsampling applications in mobile communication systems and disk drives
Q & A
- What is the resolution and sampling rate of the AD7822BN?
The AD7822BN has an 8-bit resolution and a sampling rate of 2 MSPS.
- How many analog input channels does the AD7822BN have?
The AD7822BN has a single-ended, 1 analog input channel.
- What type of digital interface does the AD7822BN use?
The AD7822BN uses a parallel digital data interface.
- What is the operating temperature range of the AD7822BN?
The operating temperature range is -40°C to 85°C.
- Can the AD7822BN operate with different supply voltages?
Yes, it can operate on 2.7V to 5V analog and digital supplies.
- What is the conversion time of the AD7822BN?
The conversion time is 420 ns.
- What are the input range options for the AD7822BN?
The input range can be 0 V to 2 V p-p (VDD = 3 V ± 10%) or 0 V to 2.5 V p-p (VDD = 5 V ± 10%).
- What package options are available for the AD7822BN?
The AD7822BN is available in 20-lead PDIP, 20-lead SOIC, and 20-lead TSSOP packages.
- What are some common applications of the AD7822BN?
Common applications include data acquisition systems, instrumentation and control equipment, industrial automation, medical devices, and test and measurement equipment.
- Is the AD7822BN compatible with various microcontrollers and digital systems?
Yes, it is compatible with a variety of microcontrollers, processors, and other digital systems that support parallel data interfaces.
