Overview
The AD7825BRZ is a high-speed, 4-channel, microprocessor-compatible, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the AD7822/AD7825/AD7829 family and is designed for high-performance data acquisition and conversion applications. The AD7825BRZ features a maximum throughput of 2 million samples per second (MSPS) and operates from a single 3 V ± 10% or 5 V ± 10% supply, making it versatile for various system designs.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 4 |
| Resolution | 8-bit |
| Conversion Time | 420 ns |
| Throughput Rate | Up to 2 MSPS |
| Supply Voltage | 3 V ± 10%, 5 V ± 10% |
| Input Ranges | 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) |
| Package Types | 20-lead and 24-lead SOIC, TSSOP |
| Operating Temperature | -40°C to +85°C |
Key Features
- High-speed conversion with a maximum throughput of 2 MSPS.
- Automatic power-down at the end of conversion to reduce power consumption.
- Flexible parallel interface with EOC (end of conversion) pulse for easy interfacing to microprocessors and DSPs.
- On-chip reference of 2.5 V with a 2% tolerance.
- Track-and-hold amplifier and a half-flash ADC conversion technique.
- Analog input span adjustment via the VMID pin.
- Available in various package types including SOIC and TSSOP.
Applications
- Data acquisition systems.
- DSP front ends.
- Disk drives.
- Mobile communication systems.
- Subsampling applications.
Q & A
- What is the maximum throughput rate of the AD7825BRZ?
The AD7825BRZ has a maximum throughput rate of up to 2 million samples per second (MSPS).
- What are the available supply voltage options for the AD7825BRZ?
The AD7825BRZ can operate from a single 3 V ± 10% or 5 V ± 10% supply.
- What is the conversion time of the AD7825BRZ?
The conversion time of the AD7825BRZ is 420 ns.
- Does the AD7825BRZ have an on-chip reference?
Yes, the AD7825BRZ has an on-chip reference of 2.5 V with a 2% tolerance.
- What types of packages are available for the AD7825BRZ?
The AD7825BRZ is available in 20-lead and 24-lead SOIC and TSSOP packages.
- What is the operating temperature range of the AD7825BRZ?
The operating temperature range of the AD7825BRZ is -40°C to +85°C.
- How does the AD7825BRZ manage power consumption during idle periods?
The AD7825BRZ features automatic power-down at the end of conversion to reduce power consumption.
- What interface type does the AD7825BRZ use for data transfer?
The AD7825BRZ uses a flexible parallel interface with an EOC (end of conversion) pulse.
- Can the AD7825BRZ be used in standalone mode?
Yes, the AD7825BRZ can be used in standalone mode due to its EOC pulse feature.
- What are some common applications of the AD7825BRZ?
The AD7825BRZ is commonly used in data acquisition systems, DSP front ends, disk drives, mobile communication systems, and subsampling applications.
