Datasheet

SCA100T Series
VTI Technologies Oy Subject to changes 15/18
www.vti.fi Doc. nr. 8261800 Rev.A
3 Application Information
3.1 Recommended Circuit Diagrams and Printed Circuit Board Layouts
The SCA100T should be powered from a well regulated 5 V DC power supply. Coupling of digital
noise to the power supply line should be minimized. 100nF filtering capacitor between VDD pin 12
and GND plane must be used.
The SCA100T has a ratiometric output. To get the best performance use the same reference
voltage for both the SCA100T and Analog/Digital converter.
Use low pass RC filters with 5.11 kΩ and 10nF on the SCA100T outputs to minimize clock noise.
Locate the 100nF power supply filtering capacitor close to VDD pin 12. Use as short a trace length
as possible. Connect the other end of capacitor directly to the ground plane. Connect the GND pin
6 to underlying ground plane. Use as wide ground and power supply planes as possible. Avoid
narrow power supply or GND connection strips on PCB.
Figure 13. Analog connection and layout example
Figure 14. SPI connection example