AD9261是一款16位模数转换器(ADC),采用连续时间Σ-Δ架构,可在10 MHz输入带宽上实现86 dB的动态范围。连续时间Σ-Δ架构所独有的集成功能和特性可大大简化其使用,并将所需的外部原件降至最少。AD9261具有阻性输入阻抗,可显著降低对驱动器放大器的要求。此外,32倍过采样五阶连续时间环路滤波器可显著衰减带外信号和混叠,因而输入端无需外部滤波器。
外部时钟输入或集成的整数N分频锁相环(PLL)提供过采样连续时间Σ-Δ调制器所需的640 MHz内部时钟。片内抽取滤波器和采样速率转换器可将调制器数据速率从640 MSPS降至用户定义的输出数据速率(30 MSPS至160 MSPS),从而实现更高效、更直接的接口。数字输出数据格式为偏移二进制、格雷码或二进制补码。数据时钟输出(DCO)用来确保接收逻辑以正确的时序工作。
The AD9261 is a 16-bit analog-to-digital converter (ADC) based on a continuous time sigma-delta (Σ-Δ) architecture that achieves 86 dB of dynamic range over a 10 MHz input bandwidth. The integrated features and characteristics unique to the continuous time Σ-Δ architecture significantly simplify its use and minimize the need for external components.
The AD9261 has a resistive input impedance that significantly relaxes the requirements of the driver amplifier. In addition, a 32× oversampled 5th-order continuous time loop filter significantly attenuates out of band signals and aliases, reducing the need for external filters at the input.
An external clock input or the integrated integer-N PLL provides the 640 MHz internal clock needed for the oversampled continuous time Σ-Δ modulator. On-chip decimation filters and sample rate converters reduce the modulator data rate from 640 MSPS to a user-defined output data rate between 30 MSPS to 160 MSPS, enabling a more efficient and direct interface.
The digital output data is presented in offset binary, Gray code, or twos complement format. A data clock output (DCO) is provided to ensure proper timing with the receiving logic.The AD9261 operates on a 1.8 V analog supply and a 1.8 V to 3.3 V digital supply, consuming 375 mW. The AD9261 is available in a 48-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C).
产品型号 | 封装 | 引脚 | 温度范围 | 包装和数量 | 报价*(100-499) | 报价*1000 pcs | RoHS |
---|---|---|---|---|---|---|---|
AD9261-10EBZ 产品状态: 量产 | 评估板 | 48 | 工业 | 1 | $ 300.00 | $ 300.00 | 是 |
AD9261BCPZ-10 产品状态: 量产 | 48 ld LFCSP (7x7x.85mm w/5.1mm Pad) | 48 | 工业 | Tray, 260 | $ 32.94 | $ 28.00 | 是 |
AD9261BCPZRL7-10 产品状态: 量产 | 48 ld LFCSP (7x7x.85mm w/5.1mm Pad) | 48 | 工业 | Reel, 750 | $ 32.94 | $ 28.00 | 是 |