Circuito de aislamiento para RS-232 (CIR16822S)

Written by: Newton C. Braga
Category: Banco de circuitos

 

En aplicaciones críticas de la interfaz RS-232, se debe considerar el peligro de tensiones inducidas en los cables. Una forma de evitar el problema es mediante el uso de aisladores ópticos. Analog Devices (www.analog.com) en su Nota de aplicación AN-740 proporciona circuitos prácticos para este propósito con excelentes explicaciones sobre el funcionamiento de este tipo de interfaz. Teniendo en cuenta que los acopladores ópticos digitales comunes no admiten señales RS-232, el diseñador debe tener cuidado al elegir el dispositivo correcto para el proyecto. En el circuito que se muestra en la figura 2. En el circuito que se muestra, los transceptores RS-232 usan lógica digital con señales entre 0 y 5 V o 0 a 3 V, que se conectan a un UART o procesador. El proyecto presentado utiliza un acoplador óptico de Analog especialmente diseñado para este propósito. Tenga en cuenta que el diagrama fuente también está incluido.

 

Circuito de aislamiento para RS-232
Circuito de aislamiento para RS-232

 

 

 

pcbway_012_2024

Buscador de Datasheets


N° de Componente 

Banco de Circuitos

J! InfoRequestSessionProfileQueries21
18.812MBMemory Usage46.84msRequest Duration
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