TSH346 STMicroelectronics, TSH346 Datasheet - Page 8

• Manufacturer Part Number: TSH346
• Description: Single supply triple video buffer and filter for HD video applications
• Manufacturer: STMicroelectronics

Power supply considerations and improvement of the PSRR
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Power supply considerations and improvement of the
PSRR
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, a capacitor
of 100 nF (C
improve the noise supply rejection in the higher frequency ranges. 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 21. Circuit for power supply bypassing
HF
) can be added. C
G
HF
R
B
must be placed as close as possible to the IC pin, to
Coil
TSH346
+V
4
5
CC
+
AM00824
C
C
HF
LF
LF
) greater than 10 µF is
TSH346