Avago optocouplers reduce power requirements

Utilising an integrated circuit design and thick insulation material, Avago's ACPL-M61L/061L/064L/W61L/K64L optocouplers are said to offer a reduction in power requirements without compromising isolation and insulation performance.

These digital optocouplers also provide good high-voltage performance over the lifetime of the product while meeting the requirements of safe insulation for reinforced applications.

The optocoupler family is targeted at designers of communication interfaces (RS485, CANBus, and I2C), microprocessor system interfaces, and digital isolation for A/D, D/A conversion applications.

Avago's ultra-low-power 10MBd digital optocouplers combine a high-efficiency light-emitting diode (LED) and an integrated high-gain photo detector, which results in low forward-drive current (1.6mA) that will enable designers to interface the optocoupler input directly from the microcontroller output - eliminating the use of buffers to drive the LED.

Moreover, the use of the LED input with a faraday-shielded photodetector circuit enables good application level common mode noise immunity (35kV/us typical).

This optocoupler family supports both 3.3V and 5V supply voltages, and provides reliable system performance in industrial temperatures ranging from -40C to +105C.

The ACPL-M61L/061L/064L/W61L/K64L family integrates a feature similar to 'under-voltage lock-out' that prevents output disruption during a power supply loss or system recovery.

Additionally, the output of these optocouplers is designed with a slew-rate controlled feature to allow the voltage rise and fall times to be controlled over a range of load capacitances.