Overview
The AD7822BRU, produced by Analog Devices Inc., is a high-speed, microprocessor-compatible, 8-bit analog-to-digital converter (ADC). This component is part of the AD7822/AD7825/AD7829 family and is designed for various applications requiring fast and accurate analog-to-digital conversion. The AD7822BRU features a maximum throughput of 2 MSPS and operates from a single 3 V ± 10% or 5 V ± 10% supply, making it versatile for different system requirements.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 |
| Resolution | 8-bit |
| Conversion Time | 420 ns |
| Throughput Rate | Up to 2 MSPS |
| Supply Voltage | 3 V ± 10%, 5 V ± 10% |
| 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%) |
| Operating Temperature | −40°C to +85°C |
| Package Type | 20-Lead TSSOP (RU-20) |
| On-Chip Reference | 2.5 V (2% tolerance) |
Key Features
- Fast conversion time of 420 ns, maximizing DSP processing time in real-time systems.
- Automatic power-down at the end of conversion to reduce power consumption.
- Flexible parallel interface with End-of-Conversion (EOC) pulse for standalone operation.
- Analog input span adjustment via the VMID pin to offset the input span.
- On-chip reference of 2.5 V with a 2% tolerance.
- Track-and-hold amplifier and a half-flash ADC conversion technique.
Applications
- Data acquisition systems.
- DSP front ends.
- Disk drives.
- Mobile communication systems and subsampling applications.
Q & A
- What is the resolution of the AD7822BRU? The AD7822BRU has an 8-bit resolution.
- What is the maximum throughput rate of the AD7822BRU? The maximum throughput rate is up to 2 MSPS.
- What are the operating supply voltage ranges for the AD7822BRU? The AD7822BRU operates from a single 3 V ± 10% or 5 V ± 10% supply.
- What is the conversion time of the AD7822BRU? The conversion time is 420 ns.
- What types of packages are available for the AD7822BRU? The AD7822BRU is available in a 20-Lead TSSOP (RU-20) package.
- What is the operating temperature range for the AD7822BRU? The operating temperature range is −40°C to +85°C.
- Does the AD7822BRU have an on-chip reference? Yes, the AD7822BRU has an on-chip reference of 2.5 V with a 2% tolerance.
- What is the input range for the AD7822BRU when VDD is 3 V ± 10%? The input range is 0 V to 2 V p-p when VDD is 3 V ± 10%.
- What is the input range for the AD7822BRU when VDD is 5 V ± 10%? The input range is 0 V to 2.5 V p-p when VDD is 5 V ± 10%.
- Does the AD7822BRU support automatic power-down? Yes, the AD7822BRU supports automatic power-down at the end of conversion.
