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J261是一种新型集成高速电压比较器。它的主要特点是高速差分输入、双端互补输出、输入失调低、可以直接接受来自运放的模拟信号、模拟信号到数字信号的转换迅速。它的输出为互补TTL标准逻辑方波,驱动能力大。它设有两个选通控制端,利用逻辑信号可以分别独立地控制两个输出门的工作。它正常工作需要三个电源,由于电源允许范围较宽,故适应能力较强。它可以替代国外SE 529/NE 529,且可以与美国LM 261、LM 361互换使用。本文对J261的工作原理、主要性能、测试方法及应用作一介绍。
J261 is a new integrated high-speed voltage comparator. Its main feature is high-speed differential input, double-ended complementary output, low input offset, you can directly accept the analog signal from the op amp, the analog signal to the digital signal conversion quickly. Its output is complementary to the TTL standard logic square wave, driving ability. It has two gating control terminal, the use of logic signals can be independently controlled two output door work. It needs three power supplies for normal operation. Due to the wide range of power supply allowed, it has strong adaptability. It can replace the foreign SE 529 / NE 529, and can be used interchangeably with the United States LM 261, LM 361. This article on the J261’s working principle, the main performance, test methods and applications for an introduction.