Digital high-speed optocoupler offers easy integration into existing systems

Rutronik's portfolio includes the 25MBd high-speed optocoupler VOIH72A from Vishay. The digital input and output of the single-channel component allows easy integration into digital systems, makes external driver stages and current limiting resistors obsolete, simplifies designs and lowers costs. The space-saving component combines a maximum pulse distortion of only 6ns, a maximum supply current of 2mA and a supply voltage range of 2.7V to 5.5V and is fast enough to support BUS systems such as SPI, and controllers for UPS systems or to transmit high-resolution PWM signals.

The optocouplers have no forward current or current limiting resistor at the input and no pull-up resistor at the output and provide a high-speed data rate of up to 25MBd. They feature digitally controlled LED drivers with high-speed IRED and integrated optical photodiode IC detectors. The components provide a guaranteed CMTI of at least 20kV/µs, which, combined with a low switch-on threshold and low supply current, makes them excellent for noise suppression and the interruption of ground loops.

Suitable for usage in an operating temperature range from -40C to +110C and installed in a small form factor SOIC-8 package, they are also pin-compatible with solutions from other manufacturers and are especially suited for use in new and existing designs for applications in data communication, PWM or the provision of high-voltage safety in motor drives or automation devices.

Application examples include Galvanic isolation in digital systems, elimination of earth loops, isolation of digital BUS systems, isolation of PLC and ATE interfaces, and feedback control in digital power supplies.