TSH345 STMicroelectronics, TSH345 Datasheet - Page 11

• Manufacturer Part Number: TSH345
• Description: Single supply triple video buffer and selectable filter for HD and SD video applications
• Manufacturer: STMicroelectronics

TSH345
2.1
Power supply considerations: improving the power supply
noise rejection
Correct power supply bypassing is very important to optimize performance in low- and high-
frequency ranges. Bypass capacitors should be placed as close as possible to the IC pin
(pin 4) to improve high-frequency bypassing. A capacitor (C
necessary to improve the PSRR in low frequencies. For better quality bypassing, you can
add a capacitor of 100 nF (C
improve the noise supply rejection in the higher frequencies. A coil can be added in order to
better reject the noise from the supply and to prevent current peaks as much as possible.
Figure 26. Circuit for power supply bypassing
HF
). C
G
R
B
HF
must be placed as close as possible to the IC pin to
Coil
TSH345
+V
7
8
CC
+
AM00816
C
C
HF
LF
LF
) greater than 10 µF is
Electrical characteristics
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