ADP2442

• Full featured evaluation board for the ADP2442
• Configurable synchronous step-down dc-to-dc switching regulator
• Operating voltage range: VIN = 6 V to 36 V
• Output voltage: 5 V or adjustable
• 1 A maximum load
• Switching frequency: 500 kHz or adjustable switching frequency of 300 kHz to 1 MHz
• Power saving mode at light load
• Precision enabled input pin
• Current limit protection
• Power good output
• SYNC/MODE pin for external synchronization or mode selection
• 53 mm × 53 mm board size

The ADP2442-EVALZ evaluation board is a complete, dc-to-dc switching regulator design based on the ADP2442, a configurable, 1 A, synchronous, step-down dc-to-dc regulator.

The ADP2442 is a synchronous, step-down dc-to-dc switching regulator that uses a current mode pulse-width modulation (PWM) control scheme. The ADP2442 can be configured for pulse skip mode at light load or forced PWM mode. The power switch and synchronous rectifier are integrated for minimal external part count and high efficiency. The ADP2442 is optimized for operation with small ferrite core inductors and ceramic capacitors to deliver the maximum output power per square millimeter of the printed circuit board (PCB) area.

The ADP2442-EVALZ is available with 5 V at a 1 A output, with a switching frequency set to 500 kHz. If needed, the ADP2442- EVALZ configuration can be modified by changing the values of the appropriate passive components.

Complete specifications for the ADP2442 device can be found in the ADP2442 data sheet, which is available from Analog Devices, Inc., and should be consulted in conjunction with this user guide when using the evaluation board.

AD-FMCADC7-EBZ是一款单通道高速数据采集板，集成了12位、单通道AD9625 (ADC采样速率：2500 MSPS)和驱动转换器的低失真、4.8 GHz、差分放大器ADL5567。FMC尺寸形式支持JESD204B高速串行接口。使用集成VCO的片上ADF4355-2宽带PLL支持所有时钟。该产品设计用于DC至1.8GHz的宽带模拟信号采样。AD9625将宽输入带宽、高采样速率和出色的线性度等特性融于一身，非常适合于频谱分析仪、数据采集系统以及各式军工电子应用。

此板符合大多数FMC规格的机械尺寸、安装孔位等要求。虽然该板确实符合大多数FMC规格要求，但它不能用作现成的商用(COTS)板。如果需要可供立即集成的商用产品，请咨询FMC制造商并查阅FMC规格(ANSI/VITA 57.1)。

该板针对配合Xilinx开发系统使用的ADI参考设计。ADI提供完整的源代码（HDL和软件）以重新创建这些项目（减去由FPGA供应商提供的、我们所用的IP），但所供信息可能不足以将其连接至自定义平台。

该板专门针对放大器模拟输入上通过转换器信号链的真直流耦合而设计。从而产生尽可能宽的适合AD-FMCADC7-EBZ的频谱。

参考设计包括通过JESD204B串行接口和SPI接口采集器件数据。样本写入外部DDR-DRAM中。它允许通过SPI编程器件并监控其内部寄存器。