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ADA4665-2ARZ-R7 Datasheet(PDF) 16 Page - Analog Devices

Part # ADA4665-2ARZ-R7
Description  16 V, 1 MHz, CMOS Rail-to-Rail Input/Output Operational Amplifier
PDF  20 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADA4665-2ARZ-R7 Datasheet(HTML) 16 Page - Analog Devices

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ADA4665-2
Rev. 0 | Page 16 of
20
ADA4665-2
1/2
+VSY
–VSY
R1
22.5kΩ
R2
22.5kΩ
C1
1nF
C2
0.5nF
VOUT
VIN
Figure 57. Two-Pole Low-Pass Filter
When R1 = R2 and C1 = 2C2, the values of Q and the cutoff
frequency are calculated as follows:
)
(
R2
R1
C2
+
C2
C1
R2
R1
Q =
2
R1 R2 C1 C
f
c
π
=
2
1
10
0
–10
–20
–30
–40
–50
–60
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 58. Low-Pass Filter: Gain vs. Frequency
Figure 59 shows a two-pole high-pass filter, with cutoff frequency
at 10 kHz and quality factor, Q, of 1/√2.
ADA4665-2
1/2
+VSY
–VSY
R1
22.5kΩ
R2
45kΩ
C1
0.5nF
C2
0.5nF
VOUT
VIN
Figure 59. Two-Pole High-Pass Filter
When R2 = 2R1 and C1 = C2, the values of Q and the cutoff
frequency are calculated as follows:
)
(
C2
C1
R1
C2
C1
R2
R1
Q
+
=
C2
C1
R2
R1
f
c
π
=
2
1
0
–10
10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
Figure 60. High-Pass Filter: Gain vs. Frequency



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