安华高HCPL-2503替代群芯微高速光耦型号QX6N136美林美深
已有 784 次阅读2025-1-3 10:48
|个人分类:高速光耦
群芯微 QX6N136 是一款性能卓越的单通道高速光耦合器,以下是其详细介绍:
内部结构与工作原理
QX6N136 由一个 850nm 的 AlGaAs LED 光学耦合到一个高速光电检测器组成。当输入侧的 LED 正向偏置时,会发出红外光,该光线照射到输出侧的光电检测器上,使光电二极管产生光电流,进而控制输出晶体管的导通与截止,从而实现电信号的隔离传输。光电二极管偏置和输出晶体管集电极的单独连接,可以通过降低基极集电极电容,使速度比传统光电晶体管耦合器提高 100 倍。
The QX6N136 consists of an 850nm AlGaAs LED optically coupled to a high-speed photodetector. When the LED on the input side is forward-biased, it emits infrared light, which illuminates the photodetector on the output side, so that the photodiode generates photocurrent, and then controls the on-off of the output transistor, so as to realize the isolated transmission of the electrical signal. The photodiode bias and separate connection of the output transistor collector can increase speeds by up to 100 times over conventional phototransistor couplers by reducing base collector capacitance.
性能参数
电气特性:
输入特性:最大正向二极管电压为 1.9V,最大反向二极管电压为 5V,最大输入二极管电流为 25mA,最大功率耗散为 100mW。
输出特性:集电极开路输出,数据波特率可达 500k 以上,能够满足高速信号传输的需求。
隔离特性:绝缘电压高达 5300Vrms,可在输入和输出之间提供高电气隔离,有效防止电气干扰和噪声。共模抑制比卓越,达 10kV/µs,能在嘈杂的环境中确保信号的准确传输。
工作环境:最大工作温度为 + 100℃,最小工作温度为 - 55℃,可在较宽的温度范围内稳定工作。
封装与引脚
采用 DIP-8 封装,引脚排列清晰,便于在电路板上进行安装和焊接。其 8 个引脚分别具有不同的功能,如输入侧的阳极和阴极引脚用于连接驱动电路,输出侧的集电极、发射极等引脚用于连接负载电路等。
Input characteristics: Maximum forward diode voltage is 1.9V, maximum reverse diode voltage is 5V, maximum input diode current is 25mA, maximum power dissipation is 100mW.
Output characteristics: open collector output, data baud rate up to 500k or more, to meet the needs of high-speed signal transmission.
Isolation characteristics: Insulation voltage up to 5300Vrms provides high electrical isolation between input and output, effectively preventing electrical interference and noise. An excellent common-mode rejection ratio of 10kV/µs ensures accurate signal transmission in noisy environments.
Working environment: The maximum working temperature is + 100℃, the minimum working temperature is -55 ℃, can work stably in a wide temperature range.
Package with pins
DIP-8 package, clear pin arrangement, easy to install and weld on the board. Its 8 pins have different functions, such as the anode and cathode pins on the input side are used to connect the drive circuit, and the collector and emitter pins on the output side are used to connect the load circuit.
优势特点
高速传输:以其快速的开关速度而闻名,能够提供亚微秒范围内的响应时间,非常适合需要快速信号传输的高频应用,如高速数字通信接口的隔离等,可支持超过 500k 的数据波特率。
高共模抑制比:具有出色的共模噪声抑制能力,即使在恶劣的电磁环境中也能确保信号的准确传输,这对于工业现场等存在大量电磁干扰的环境尤为重要。
宽工作温度范围:可在 - 55℃至 + 100℃的宽温度范围内稳定工作,适用于各种工业、汽车电子、户外通信等对温度要求苛刻的应用场景。
兼容性好:与 TTL 逻辑电平兼容,可方便地与 TTL 电路进行连接和通信,易于在各种数字电路中实现信号的隔离与传输。
High-speed transmission: Known for its fast switching speed, capable of providing response times in the sub-microsecond range, it is ideal for high-frequency applications requiring fast signal transmission, such as the isolation of high-speed digital communication interfaces, which can support data baud rates in excess of 500k.
High common-mode rejection ratio: Excellent common-mode noise rejection, even in harsh electromagnetic environments to ensure accurate signal transmission, which is particularly important for industrial sites and other environments with a lot of electromagnetic interference.
Wide operating temperature range: can work stably in a wide temperature range of -55 ° C to + 100 ° C, suitable for a variety of industrial, automotive electronics, outdoor communication and other applications with demanding temperature requirements.
Good compatibility: compatible with TTL logic level, it can be easily connected and communicated with TTL circuit, and it is easy to realize signal isolation and transmission in various digital circuits.
应用领域
工业自动化:在变频器、伺服、步进、PLC 等设备中,用于隔离输入输出信号,避免干扰和电气噪声的影响,确保控制器的正常运行,实现双向通讯,保证系统稳定性和可靠性。
网络通讯:广泛应用于 I2C、SPI、CAN 总线数据通讯隔离,保证端口数据及驱动信号快速稳定传达到每一颗芯片上。
汽车电子:可用于汽车的电子控制单元、动力传输系统、车身电子控制系统等,如发动机控制模块、变速箱控制模块、车载娱乐系统等,提高系统的可靠性和安全性。
新能源:在光伏逆变器、风力发电变流器、电动汽车充电桩等新能源设备中,用于隔离高压侧和低压侧的信号,防止电气故障和漏电风险。
Industrial automation: In the inverter, servo, stepper, PLC and other equipment, used to isolate input and output signals, avoid interference and the impact of electrical noise, to ensure the normal operation of the controller, to achieve two-way communication, to ensure system stability and reliability.
Network communication: Widely used in I2C, SPI, CAN bus data communication isolation, to ensure that port data and drive signals quickly and stably transmitted to each chip.
Automotive electronics: can be used in automotive electronic control units, power transmission systems, body electronic control systems, such as engine control modules, transmission control modules, vehicle entertainment systems, etc., to improve the reliability and safety of the system.
New energy: In photovoltaic inverters, wind power converters, electric vehicle charging piles and other new energy equipment, used to isolate the high-voltage side and low-voltage side of the signal, to prevent electrical failure and leakage risk.
与同类产品对比
与其他品牌的 6N136 光耦合器相比,群芯微 QX6N136 在性能上不相上下,但可能在价格、供货稳定性等方面具有一定优势。与 6N137 光耦合器相比,QX6N136 的速度更快,更适合高速信号传输的应用;而 6N137 则具有较高的电流传输比,适合需要较大输出电流的应用。