PCIM Europe: Fast Dual-Channel Bi-Directional Optocoupler Runs at 25MBd

The ACSL-7210 from Avago Technologies is a dual-channel bi-directional 25MBd digital optocoupler optimised for bi-directional industrial communication networks using high speed protocols such as PROFIBUS fieldbus and Serial Peripheral Interface (SPI). The device utilises Avago's proprietary CMOS IC and patented packaging technologies to achieve high isolation voltage of 3750 VRMS in a <2mm low profile narrow-body SOIC-8 package.
The main building blocks of the ACSL-7210 for each channel are a CMOS LED driver IC which is controlled by a CMOS logic input signal, a high speed LED and a CMOS detector IC. These building blocks enable propagation delay of 40 ns and short pulse width distortion 10ns maximum to meet the digital isolation design needs of high speed industrial communication networks.
The ACSL-7210 is UL recognised with isolation voltage of 3750 VRMS for 1 minute and IEC/EN/DIN EN 60747-5-5 compliant with working insulation voltage VIORM of 567 VPEAK and reinforced insulation. Features include 3.3V and 5V CMOS Compatibility, CMOS Input and Output, 20kV/µs Minimum Common Mode Rejection (CMR) at VCM = 1000 V and guaranteed AC and DC Performance over Wide Temperature Range: -40°C to +105°C. Applications include Digital Fieldbus Isolation: PROFIBUS, CC-Link, DeviceNet, SDS, Multiplexed Data Transmission, General Instrument and Data Acquisition, Computer Peripheral Interfaceand Microprocessor System Interface.