Overview
The AD7822BNZ is a high-speed, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7822/AD7825/AD7829 family, which offers 1-, 4-, and 8-channel configurations. The AD7822BNZ specifically features a single analog input channel. It is designed for microprocessor compatibility and boasts a maximum throughput of 2 million samples per second (MSPS).
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 1 (AD7822), 4 (AD7825), 8 (AD7829) |
| Resolution | 8-bit |
| Conversion Time | 420 ns |
| 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%) |
| On-chip Reference | 2.5 V (2% tolerance) |
| Track-and-Hold Amplifier | Yes |
| Interface | High-speed parallel interface with EOC pulse |
| Operating Temperature | -40°C to +85°C |
| Package | 20-Lead PDIP, 20-Lead SOIC, 20-Lead TSSOP |
Key Features
- High-speed 8-bit half-flash ADC with 420 ns conversion time
- On-chip track-and-hold amplifier and 2.5 V reference (2% tolerance)
- Automatic power-down at the end of conversion
- Flexible parallel interface with EOC pulse for standalone operation
- Input offset adjust capability
- Wide operating supply range: 3 V ± 10% and 5 V ± 10%
- SNR performance up to 10 MHz input frequencies
Applications
- Data acquisition systems
- DSP front ends
- Disk drives
- Mobile communication systems
- Subsampling applications
Q & A
- What is the conversion time of the AD7822BNZ?
The conversion time of the AD7822BNZ is 420 ns. - How many analog input channels does the AD7822BNZ have?
The AD7822BNZ has a single analog input channel. - What are the supply voltage options for the AD7822BNZ?
The AD7822BNZ can operate from a single 3 V ± 10% and 5 V ± 10% supply. - Does the AD7822BNZ have an on-chip reference?
Yes, the AD7822BNZ has an on-chip reference of 2.5 V with a 2% tolerance. - What is the operating temperature range of the AD7822BNZ?
The operating temperature range is -40°C to +85°C. - What types of packages are available for the AD7822BNZ?
The AD7822BNZ is available in 20-Lead PDIP, 20-Lead SOIC, and 20-Lead TSSOP packages. - Does the AD7822BNZ support automatic power-down?
Yes, the AD7822BNZ supports automatic power-down at the end of a conversion. - What is the maximum throughput of the AD7822BNZ?
The maximum throughput is 2 MSPS. - What kind of interface does the AD7822BNZ have?
The AD7822BNZ has a high-speed parallel interface with an EOC pulse. - What are some common applications of the AD7822BNZ?
Common applications include data acquisition systems, DSP front ends, disk drives, mobile communication systems, and subsampling applications.
