Overview
The AD9225AR is a high-performance, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This monolithic device operates on a single supply and features a built-in sample-and-hold amplifier and voltage reference. It is designed using a multistage differential pipelined architecture, which ensures 12-bit accuracy at a sampling rate of 25 million samples per second (MSPS). The AD9225AR is known for its low power consumption and cost-effectiveness, making it a viable alternative to bipolar implementations. The device supports both differential and single-ended input configurations, making it versatile for various applications such as communications, imaging, and medical ultrasound.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 25 MSPS |
| Number of Inputs | 1 |
| Input Type | Differential, Single Ended |
| Data Interface | Parallel |
| Architecture | Pipelined |
| Reference Type | Internal, External |
| Voltage - Supply, Analog | 5V |
| Voltage - Supply, Digital | 2.85 V ~ 5.25 V |
| Package | 28-SOIC (0.295", 7.50mm Width) |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- High-speed CMOS process with low power consumption and cost-effectiveness.
- On-chip sample-and-hold amplifier and voltage reference.
- Supports both differential and single-ended input configurations.
- Programmable internal or external reference for flexibility in dc accuracy and temperature drift requirements.
- Digital output in straight binary format, compatible with 3 V or 5 V logic families.
- Output drivers configured to interface with various logic families.
- No missing codes over the full operating temperature range.
Applications
- Communications systems: Suitable for high-speed data conversion in communication applications.
- Imaging systems: Ideal for applications requiring high-resolution and high-speed data conversion, such as medical imaging and industrial imaging.
- Medical ultrasound: Used in medical ultrasound systems due to its high dynamic performance and ability to handle wideband inputs.
Q & A
- What is the sampling rate of the AD9225AR?
The AD9225AR has a sampling rate of 25 million samples per second (MSPS). - What is the resolution of the AD9225AR?
The AD9225AR is a 12-bit analog-to-digital converter. - What types of input configurations does the AD9225AR support?
The AD9225AR supports both differential and single-ended input configurations. - What is the package type of the AD9225AR?
The AD9225AR is available in a 28-SOIC package. - What is the operating temperature range of the AD9225AR?
The operating temperature range of the AD9225AR is -40°C to +85°C. - Can the AD9225AR use an external reference voltage?
Yes, the AD9225AR can use either an internal or an external reference voltage. - What is the architecture of the AD9225AR?
The AD9225AR uses a multistage differential pipelined architecture. - Is the AD9225AR compatible with different logic families?
Yes, the output drivers of the AD9225AR can be configured to interface with 3 V or 5 V logic families. - What are some common applications of the AD9225AR?
The AD9225AR is commonly used in communications, imaging, and medical ultrasound applications. - Does the AD9225AR have any latency in its conversion process?
Yes, the AD9225AR has a latency of three clock cycles for the conversion to be fully processed and appear at the output.
