Description:The Intersil ISL84467 device is a low ON-resistance, low voltage, bidirectional, Quad SPDT (Dual DPDT) analog switch designed to operate from a single +1. 65V to +4. 5V supply. Targeted applications include battery powered equipment that benefit from low rON (0. 39Ω) and fast switching speeds (tON = 33ns, tOFF = 16ns). The digital logic input is 1. 8V logic-compatible when using a single +3V supply. With a supply voltage of 4. 2V and logic high voltage of 2. 85V at both logic inputs, the part draws only 12µ
A good PCB layout for the ISL84467IRTZ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the IC and the capacitors. Additionally, it's recommended to place the capacitors as close as possible to the IC pins.
To ensure proper power-on and power-off sequencing, it's recommended to power on the VCC pin first, followed by the VDD pin. When powering off, the sequence should be reversed. Additionally, it's recommended to use a power-on reset circuit to ensure the IC is properly reset during power-on.
The ISL84467IRTZ has a maximum junction temperature of 150°C. To ensure reliable operation, it's recommended to keep the IC's operating temperature below 125°C. This can be achieved by using a heat sink, improving airflow, and reducing the IC's power consumption.
To troubleshoot issues with the ISL84467IRTZ, start by checking the power supply voltages, ensuring they are within the recommended range. Next, verify the IC's input and output signals using an oscilloscope. If issues persist, check the PCB layout and component values to ensure they match the recommended design.
The ISL84467IRTZ has built-in ESD protection, but it's still recommended to take precautions during handling and assembly to prevent damage. Use an anti-static wrist strap or mat, and avoid touching the IC's pins or exposed internal circuitry.
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ISL84467IRTZ Overview
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