Description:The ISL1557 is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT based solutions. This device features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier and operating from a single 4. 5V to 12V supply. The driver achieves a typical distortion of -80dBc at 150kHz into a 25Ω load. The ISL1557 is available in the thermally-enhanced 16 Ld QFN and 10 Ld HMSOP package and is specified for operation across -40°C to +85°C (IRZ, IUEZ) or -40°C to +12
A good PCB layout for the ISL1557IRZ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure proper power-up and power-down of the ISL1557IRZ, it's recommended to follow a specific power-up sequence. First, apply the analog power supply (VCC) followed by the digital power supply (VDD). During power-down, reverse the sequence. Additionally, ensure that the power supplies are ramped up and down slowly to prevent damage to the device.
The recommended input impedance for the ISL1557IRZ is 50 ohms. This ensures maximum power transfer and minimizes signal reflections. If the input impedance is not 50 ohms, it's recommended to use an impedance matching network to achieve the best possible performance.
The ISL1557IRZ has built-in ESD protection, but it's still recommended to take additional precautions to prevent ESD damage. Use ESD-safe handling and storage procedures, and consider adding external ESD protection devices such as TVS diodes or ESD arrays to the PCB design.
The ISL1557IRZ has a maximum junction temperature of 150°C. To ensure reliable operation, it's recommended to keep the device temperature below 125°C. Use thermal vias, thermal pads, and heat sinks as needed to dissipate heat. Additionally, ensure good airflow around the device and avoid blocking the airflow with other components or obstacles.
Trust Checks
This model has been built in collaboration with the manufacturer.
Manufacturer Collaborated
This model has been verified by system checks.
System Verified
This model has been reviewed by community users.
Community Approved
Sponsored
ISL1557IRZ Overview
Use the download button to access the ISL1557IRZ schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search, like ISL15,
or try a keyword search, such as Line Driver or Receivers
