
10 F
m
0.1 F
m
R
3
R
2
R
2
22pF
R
3
R
1
R
2
C
1
C
2
VIN+
(1V
)
RMS
VIN-
(1V
)
RMS
VCOMAD
AnalogInput
(2V
)
RMS
+
10 F
m
0.1 F
m
R
3
R
1
R
2
C
1
C
2
VIN+
(1V
)
RMS
VCOMAD
AnalogInput
(2V
)
RMS
+
C
2
VIN-
www.ti.com ......................................................................................................................................................................................... SBAS452 – SEPTEMBER 2008
Amplifier is an NE5532A x1 or OPA2134 x1; R1 = 3-k resistor; R2 = 1.5-k resistor; R3 = 47- resistor; C1 = 2200-pF capacitor; C2 =
0.01-
F capacitor; Gain = 1; f
–3 dB = 48 kHz.
Figure 60. Single-Ended to Differential Buffer and Anti-Aliasing LPF for Differential ADC Input
Amplifier is an NE5532A x1 or OPA2134 x1; R1 = 3-k resistor; R2 = 1.5-k resistor; R3 = 47- resistor; C1 = 2200-pF capacitor; C2 =
0.022-
F capacitor; Gain = 0.5; f
–3 dB = 48 kHz.
Figure 61. Buffer and Anti-Aliasing LPF for Single-Ended ADC Input
Copyright 2008, Texas Instruments Incorporated
57