Datasheet

C2
R1
Input
C1
R2
R3
C3
Output
- V
VCOM
+V
0V
+5V
PCM9211
SBAS495 –JUNE 2010 www.ti.com
APPLICATION EXAMPLE FOR ANALOG INPUT
Figure 45 shows an example of V
COM
biased buffering for 2-V
RMS
input with overvoltage protection.
Example of C and R values with gain (G) and corner frequency (f
C
):
R1 = 20 kΩ
R2 = 10 kΩ
R3 = 1 kΩ
C1 = 10 mF
C2 = 330 pF
C3 = 0.1 mF
G = 0.5
f
C
= 48 kHz
Figure 45. V
COM
Biased Buffering Example
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