ＬＭ3 3 9集成块内含 4个独立的电压比较器。每个电压比较器有两个输入端和一个输出端。两个输入端一个称为同相输入端 ,用“ +”表示。另一个称为反相输入端 ,用“ -”表示。其内部电路如图 1所示。用ＬＭ3 3 9电压比较器可接成单限比较器、迟滞比较器和双限比较器等。用作比 The LM3 39 integrated block contains four independent voltage comparators. Each voltage comparator has two inputs and one output. One of the two input terminals is called a non-inverting input and is represented by “+”. The other is called the inverting input and is represented by “-”. Its internal circuit is shown in Figure 1. The LM3396 voltage comparator can be connected to single-limit comparators, hysteresis comparators, and double-limit comparators. Used as a ratio