Overview
The AD9225ARSZ is a monolithic, single-supply, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates at a sampling rate of 25 million samples per second (MSPS) and features an on-chip, high-performance sample-and-hold amplifier and voltage reference. The AD9225 uses a multi-stage differential pipelined architecture with output error correction logic to ensure 12-bit accuracy and guarantees no missing codes over the full operating temperature range of -40°C to +85°C.
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 | External, Internal |
| Voltage - Supply, Analog | 5 V |
| Voltage - Supply, Digital | 2.85 V ~ 5.25 V |
| Power Consumption | 280 mW |
| Package | 28-Lead SSOP |
| Operating Temperature Range | -40°C to +85°C |
| SNR | 71 dB |
| SFDR | -85 dB |
| DNL | ±0.4 LSB |
Key Features
- Low Power Dissipation: The AD9225 consumes only 280 mW, making it highly power-efficient.
- Single +5V Supply: Simplifies system power supply design and includes a separate digital driven supply line to accommodate 3 V and 5 V logic families.
- No Missing Codes Guaranteed: Ensures 12-bit accuracy over the full operating temperature range.
- On-Chip Sample-and-Hold Amplifier (SHA): Can be configured for either single-ended or differential inputs.
- Out-of-Range Indicator (OTR): Indicates when the input signal is beyond the AD9225’s input range.
- Compatible with 3 V Logic: Output drivers can be configured to interface with 5 V or 3.3 V logic families.
Applications
The AD9225 is suitable for a variety of high-speed data acquisition applications, including:
- Medical Imaging
- Industrial Process Control
- Aerospace and Defense Systems
- High-Speed Data Acquisition Systems
- Communications Equipment
Q & A
- What is the sampling rate of the AD9225?
The AD9225 operates at a sampling rate of 25 million samples per second (MSPS).
- What is the resolution of the AD9225?
The AD9225 is a 12-bit analog-to-digital converter.
- What types of input can the AD9225 handle?
The AD9225 can handle both single-ended and differential inputs.
- What is the power consumption of the AD9225?
The AD9225 consumes 280 mW of power.
- What is the operating temperature range of the AD9225?
The AD9225 operates over a temperature range of -40°C to +85°C.
- Does the AD9225 have an on-chip sample-and-hold amplifier?
Yes, the AD9225 features an on-chip, high-performance sample-and-hold amplifier.
- What is the significance of the out-of-range indicator (OTR) in the AD9225?
The OTR output bit indicates when the input signal is beyond the AD9225’s input range.
- Is the AD9225 compatible with 3 V logic?
Yes, the AD9225 is compatible with both 5 V and 3 V logic families.
- What is the package type of the AD9225ARSZ?
The AD9225ARSZ is available in a 28-Lead SSOP package.
- What is the SNR of the AD9225?
The Signal-to-Noise Ratio (SNR) of the AD9225 is 71 dB.
