The TL3116CPW is a high-frequency device, and proper layout and placement are crucial for optimal performance. TI recommends placing the device close to the signal source, using short traces, and avoiding vias and stubs. A good rule of thumb is to keep the signal path as short as possible and use a solid ground plane to reduce noise and radiation.
The TL3116CPW has a limited input common-mode voltage range of -0.3V to VCC-1.5V. To handle this, ensure that the input signal is within this range by using voltage dividers, level shifters, or clamping circuits if necessary. Additionally, consider using a voltage reference or a buffer amplifier to stabilize the input signal.
The TL3116CPW can drive capacitive loads up to 100pF, but this may vary depending on the specific application and frequency of operation. To ensure stability, TI recommends using a series resistor (Rs) to limit the capacitive load and prevent oscillations. A good starting point is Rs = 10-20 ohms.
For high-frequency operation, TI recommends using a low-ESR bypass capacitor (e.g., 100nF) close to the device, and a series resistor (Rs) to limit the capacitive load. Additionally, use a high-frequency-compatible PCB material, and minimize trace lengths and vias to reduce signal loss and radiation.
TI recommends using a 10uF to 22uF ceramic capacitor in parallel with a 100nF to 1uF ceramic capacitor for power supply decoupling. This helps to filter out high-frequency noise and ensure stable operation. Place the capacitors close to the device and use short traces to minimize inductance.
TL3116CPW datasheet
by Texas Instruments
