TSH346 STMicroelectronics, TSH346 Datasheet - Page 9

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

TSH346
Figure 22. Circuit for noise rejection improvement measurement
Figure 23
on how carefully the power supply decoupling is achieved.
Figure 23. Power supply noise rejection
shows how the power supply noise rejection evolves versus frequency depending
+5 V
-10
-20
-30
-40
-50
-60
-70
-80
0
10k
T-bias
50
Vcc=5V(dc)+0.2Vp-p(ac)
Decoupling capacitor: 10µF+100nF
Load=150
Noise rejection=20 log (
coil=560µH
Power supply considerations and improvement of the PSRR
C
HF
Coil
Ω
100k
TSH346
no coil
Frequency (Hz)
+
Δ
VCC/
C
1M
LF
Δ
Vout)
50
10M
AGILENT
S
R
4395A
A
100M
AM00825
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