Overview
The AD9226AST is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This monolithic, single-supply ADC features a multistage differential pipelined architecture with a patented input stage and output error correction logic. It is designed to provide 12-bit accuracy at a data rate of 65 MSPS (mega-samples per second). The AD9226AST is particularly notable for its low power consumption, high signal-to-noise ratio, and robust performance across a wide range of input frequencies.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 65 MSPS |
| Signal-to-Noise Ratio (SNR) | 69 dB @ fIN = 31 MHz |
| Spurious-Free Dynamic Range (SFDR) | 85 dB @ fIN = 31 MHz |
| Intermodulation Distortion | –75 dBFS @ fIN = 140 MHz |
| Effective Number of Bits (ENOB) | 11.1 @ fIN = 10 MHz |
| Power Supply Voltage | 5 V (analog), 3 V/5 V (digital output driver) |
| Power Consumption | 475 mW |
| Package Type | 48-Lead Thin Plastic Quad Flatpack (LQFP) |
| Operating Temperature Range | –40°C to +85°C |
| Differential Nonlinearity Error | ±0.6 LSB |
| Integral Nonlinearity Error | ±0.6 LSB |
Key Features
- High-Performance Sample-and-Hold Amplifier: The AD9226AST features a patented on-chip sample-and-hold amplifier with a full power bandwidth of 750 MHz, capable of handling single-ended or differential inputs.
- Low Power Consumption: The ADC consumes only 475 mW, making it a power-efficient solution for high-speed applications.
- Single Supply Operation: It operates on a single 5 V analog supply and has a separate digital output driver supply line to accommodate 3 V and 5 V logic families.
- No Missing Codes: Guaranteed no missing codes over the full operating temperature range.
- Out of Range (OTR) Output: Indicates when the input signal is beyond the ADC’s input range.
- Pin Compatibility: Pin-compatible with other ADCs in the AD922x series.
Applications
The AD9226AST is versatile and can be used in a wide range of applications, including:
- Communications: High-speed data conversion in communication systems.
- Industrial Automation: Precision measurement and control in industrial environments.
- Instrumentation and Measurement: High-accuracy data acquisition in various measurement instruments.
- Aerospace and Defense: High-reliability data conversion in aerospace and defense systems.
- Healthcare: Medical imaging and diagnostic equipment.
- Motor and Power Control: High-speed control in motor and power systems.
Q & A
- What is the sampling rate of the AD9226AST?
The AD9226AST has a sampling rate of 65 MSPS. - What is the signal-to-noise ratio (SNR) of the AD9226AST?
The SNR is 69 dB at an input frequency of 31 MHz. - What is the power consumption of the AD9226AST?
The power consumption is 475 mW. - What type of package does the AD9226AST come in?
The AD9226AST comes in a 48-Lead Thin Plastic Quad Flatpack (LQFP). - What is the operating temperature range of the AD9226AST?
The operating temperature range is –40°C to +85°C. - Is the AD9226AST pin-compatible with other ADCs?
Yes, it is pin-compatible with other ADCs in the AD922x series. - What is the differential nonlinearity error of the AD9226AST?
The differential nonlinearity error is ±0.6 LSB. - Does the AD9226AST have an out-of-range output indicator?
Yes, it has an out-of-range (OTR) output bit that indicates when the input signal is beyond the ADC’s input range. - Can the AD9226AST handle both single-ended and differential inputs?
Yes, the patented sample-and-hold amplifier can be configured for either single-ended or differential inputs. - What is the effective number of bits (ENOB) of the AD9226AST at 10 MHz input frequency?
The ENOB is 11.1 at an input frequency of 10 MHz.
