原标题：Maxim MAX40026 280ps高速超低功耗比较器解决方案

　　Maxim公司的MAX40026是单电源高速超低功耗比较器,典型传输时延为280ps,输入共模范围为1.5V到VDD+0.1V,输出级是LVDS,有助于最小化功耗和直接和许多FPGA和CPU直接接口,每个输出线的互补输出有助于抑制共模噪音.工作电压2.7V-3.6V,2.7V时的功耗为39.4mW,工作温度-40℃ 到 +125℃,满足汽车AEC-Q100规范.主要用在LIDAR, RADAR和SONAR的距离检测, 飞行时间传感器,高速差分线路接收器,示波器的高速触发,通信,振荡器,阈值检测器,高速电平转移,测试和测量以及汽车电子.本文介绍了MAX40026主要优势和特性,单端和差分端输出接收器框图,以及评估板MAX40026 EVK主要特性,电路图,材料清单和PCB设计图.

　　The MAX40025 and MAX40026 are single-supply, high-speed comparators with a typical propagation delay of 280ps. The overdrive dispersion is extremely low (typical 25ps), making these comparators ideal for time-of-flight distance measurement applications.

　　The input common mode range of 1.5V to VDD + 0.1V is compatible with the output swings of several widely used high-speed trans-impedance amplifiers, such as the MAX40658.

　　The output stage is LVDS (Low-Voltage Differential Sig-naling), which helps to minimize power dissipation and in-terfaces directly with many FPGAs and CPUs. Comple-mentary outputs help in suppression of common-mode noise on each output line.

　　The MAX40025 is offered in a space-saving, tiny, 1.218mm x 0.818mm, 6-bump wafer-level package (WLP), while the MAX40026 is available in a 2mm x 2mm 8-pin TDFN side-wettable package and meets AEC-Q100 automotive qualification requirements. The MAX40025/MAX40026 operate over -40℃ to +125℃ temperature range and run from a single supply voltage of 2.7V to 3.6V.

　　MAX40026主要优势和特性:

　　● Fast Propagation Delay: 280ps, Typ

　　● Low Overdrive Dispersion: 25ps (VOD = 10mV to 1V)

　　● Supply Voltage 2.7V to 3.6V

　　● 39.4mW at 2.7V Supply

　　● Power-Efficient LVDS Outputs

　　● -40°C to +125°C Temperature Range

　　● Automotive AEC-Q100 Qualified (TDFN-8 Version)

　　● Internal 1.5mV Hysteresis: MAX40026

　　● Internal 2.5mV Hysteresis: MAX40025A

　　MAX40026应用:

　　● Distance Sensing in LIDAR, RADAR, and SONAR

　　● Time-of-Flight Sensors

　　● High-Speed Differential Line Receivers

　　● High-Speed Triggering in Oscilloscopes

　　● Communications

　　● Oscillators

　　● Threshold Detectors

　　● High-Speed Level-Shifting

　　● Test and Measurement

　　● Automotive Applications

　　图1. MAX40026差分端输出接收器框图

　　图2. MAX40026单端输出接收器框图

　　评估板MAX40026 EVK

　　The MAX40026 evaluation kit (EV kit) is a fully assembled electrical demonstration kit that provides a proven design to evaluate the MAX40026 ultra-low 280ps propagation delay, ultra-low dispersion comparator with 2mV hysteresis.

　　The board provides layout options that allow the input termination to be easily modified for alternative input terminations. The comparator outputs are designed to drive low voltage differential signal outputs (LVDS).

　　The LVDS outputs help minimize power dissipation and interfaces directly with high speed interconnect devices, FPGA’s and CPU. The MAX40026 comparator is ideal for time of flight distance measurement applications.

　　This EV kit demonstrates the MAX40026ATA/VY+ in an pin TDFN package.

　　评估板MAX40026 EVK主要特性:

　　●● Fast Propagation Delay: 280ps typ

　　●● Low Overdrive Dispersion: 25ps (VOV = 10mV to 100mV)

　　●● Supply Voltage 2.7V to 3.6V

　　●● 39.4mW at 2.7V Supply

　　●● Power-Efficient LVDS Outputs

　　●● -40°C to +125°C Temperature Range

　　图3. 评估板MAX40026 EVK外形图

　　图4. 评估板MAX40026 EVK电路图