品牌
- 亚德诺半导体
- 产品类型
- 14位流水线式模数转换器（ADC）
- 双通道，采样率为65 MSPS（百万样本每秒）
- 采用64引脚低剖面四扁平封装 (LQFP)。
- 技术规格
- 分辨率：14位，能够高精度地将模拟信号转换为数字格式。
- 采样率：65 MSPS，允许快速捕获模拟信号，适用于具有高频输入信号的应用。
- 信噪比 (Signal – to – Noise Ratio)：在奈奎斯特频率下约为71.6 dB，确保高质量转换并具有低噪声干扰。
- SFDR（无杂散动态范围）：在奈奎斯特频率附近约为80.5 dBc，最小化输出中的杂散信号。
- 输入类型：支持差分和单端输入，输入范围可配置为1 Vp – p到2 Vp – p。这种灵活性使得它可以轻松地与各种模拟信号源集成。
- 供电电压：工作电压为3V，允许范围为2.7V到3.6V，适用于许多常见的电源配置。
- 功耗：总共消耗600 mW（在65 MSPS时每个通道消耗300 mW），相对较低 – 功耗与其性能能力相匹配，使其适用于电池供电或对功耗敏感的应用。
- 工作温度范围：工业级工作温度范围从 – 40°C 到 + 85°C，确保在恶劣的环境条件下可靠运行。
- Clock Input: Features dual independent clock inputs with a duty – cycle stabilizer. This helps in achieving stable and accurate sampling, compensating for any variations in the clock signal.
- Output Data Format: Outputs data in either offset binary or two’s complement format, providing compatibility with different digital systems.
- Key Features
- Pipelined Architecture: Utilizes a multistage differential pipelined architecture with output error – correction logic. This ensures 14 – bit accuracy and guarantees no missing codes over the full operating temperature range at up to 65 MSPS data rates, providing reliable and consistent performance.
- Dual – Channel Design: Allows for simultaneous sampling of two independent analog inputs. This is beneficial in applications where multiple signals need to be captured and processed simultaneously, such as in certain communication and measurement systems.
- Wide Bandwidth: Has a 500 MHz analog input bandwidth, enabling the capture of high – frequency analog signals. This makes it suitable for applications like wireless communication systems and high – speed data acquisition in test and measurement equipment.
- Low Power: Optimized for power – efficient operation, which is crucial for battery – powered instruments and portable devices, where minimizing power consumption is a key requirement.
- Robust Packaging: The 64 – pin LQFP package is designed with thermal management in mind. For example, the LFCSP variant has an integrated heat slug that improves thermal and electrical properties when attached to a ground plane on the PCB. A thermal (filled) via array to a ground plane beneath the part helps in heat dissipation, lowering the junction temperature and ensuring reliable performance in harsh environments.
- Applications
- Medical Ultrasound: Used for high – precision imaging in diagnostic equipment. The high resolution and sampling rate of the AD9248BSTZ – 65 are essential for accurately capturing the detailed ultrasonic signals required for clear and precise medical imaging.
- Wireless Communications: Employed in direct – conversion receivers for wireless communication standards such as WB – CDMA, CDMA 2000, and WiMAX systems. Its wide bandwidth and high – speed sampling capabilities are well – suited for processing the complex and high – frequency signals in these communication protocols.
- Industrial Automation: Applied in process control systems for monitoring and controlling industrial processes. It can be used for motor drive feedback, where accurate measurement of analog signals related to motor performance is required, and for sensor data acquisition, enabling the collection and conversion of various analog sensor signals into digital data for further processing and analysis.
- Test & Measurement: Found in handheld oscilloscopes, low – cost digital scopes, and battery – powered instruments. Its low – power consumption, high resolution, and fast sampling rate make it an ideal choice for portable test and measurement devices that need to accurately capture and display analog signals.
- Aerospace & Defense: Utilized in radar signal processing for detecting and analyzing radar signals, as well as in avionics systems for various data acquisition and signal processing tasks. The ability to operate in a wide temperature range and handle high – speed signals makes it suitable for these demanding applications.
- Compatibility & Integration
- Analog Input Flexibility: The ability to support both differential and single – ended analog inputs with configurable offsets simplifies the connection to different types of analog signal sources, enhancing its compatibility with a wide range of analog components in a system.
- Clock Management: The built – in duty – cycle stabilizer in the clock inputs compensates for clock variations, ensuring stable and accurate sampling even in the presence of imperfect clock signals. This feature is crucial for maintaining the integrity of the converted data in different operating conditions.
- 数字接口：虽然在提供的信息中没有明确详细说明，但通常情况下，Analog Devices 的 ADC 会有一个用于控制和配置的 SPI（串行外设接口）。这个接口允许微控制器或其他数字控制设备轻松与 ADC 进行通信和编程，从而实现无缝集成到数字系统中。
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