Product Description

Introduction

The LDA515 (instead of the TCA505) is an application-specific integrated circuit with short-circuit protection developed for inductive proximity switching applications. It can be used in a wide range of proximity sensors or proximity control systems, as well as in a variety of inductive instrumentation.Induction tachometer, etc. The LDA515 consists of an oscillator, a switching circuit, and an amplifying output circuit. The basic working principle is to use an external inductor and capacitor to form an LC

high-frequency resonant circuit and generate an alternating magnetic field in the resonant loop. When the detected metal target approaches the magnetic field and reaches the sensing distance, an eddy current is generated in the detected metal target and the energy of the oscillator is taken up, so that the amplitude of the oscillator is attenuated or stopped. The oscillation and oscillation of the oscillator are processed by the post-amplifier circuit and converted into a switching signal to trigger the drive control device, thereby achieving the purpose of non-contact detection. LDA515 has the characteristics of high integration, wide working voltage, large output current, adjustable control distance, few peripheral circuits, convenient application and stable and reliable operation. Compared with the inductive proximity switch scheme composed of general discrete components, the LDA515 integrated chip solution has better consistency and stability, so it is especially suitable for high reliability and high reliability.

Feature

• Wide supply voltage: 4.0~40V
• Low current consumption：< 0.7mA
• Integrated output stage current: >70mA
• High noise immunity
• High switching frequencies up to 5 kHz
• Suitable for two-wire AC proximity switches
• Temperature response of the IC compensates that of the coil
• Short-circuit and overload protection of output stages and external components
• Temperature range -40~+125℃