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CS3011-IS датащи(PDF) 14 Page - Cirrus Logic

номер детали CS3011-IS
подробное описание детали  Precision Low-voltage Amplifier; DC to 1 kHz
PDF  18 Pages
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производитель  CIRRUS [Cirrus Logic]
домашняя страница  http://www.cirrus.com
Logo CIRRUS - Cirrus Logic

CS3011-IS датащи(HTML) 14 Page - Cirrus Logic

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CS3011
CS3012
14
DS597F5
3.4
Applications
The CS3011 and CS3012 amplifiers are optimum
for applications that require high gain and low drift.
Figure 18 illustrates a thermopile amplifier with a
gain of 650 V/V. The thermopile outputs only a few
millivolts when subjected to infrared radiation. The
amplifier is compensated and bandlimited by C1 in
combination with R2.
Figure 19 on page 14 illustrates a load cell bridge
amplifier with a gain of 768 V/V. The load cell is ex-
cited with +5 V and has a 1 mV/V sensitivity. Its full
scale output signal is amplified to produce a fully
differential
± 3.8 V into the CS5510/12 A/D convert-
er. This circuit operates from +5 V.
A similar circuit operating from +3 V can be
constructed using the CS5540/CS5541 A/D con-
verters.
CS3011
R1
100
R2
64.9k
C1
0.015
µF
Dexter Research
Thermopile ST60
Figure 18. Thermopile Amplifier with a Gain of 650 V/V
+5 V
VA
1 m V /V
-
+
350 Ω
+
-
-
+
x76 8
140 k
Ω
365
Ω
140 k
Ω
100
Ω
100
Ω
0.2 2
µ F
0.2 2
µ F
0.0 4 7
µ F
0.1
µ F
VR EF
AIN +
AIN 1
V-
V+
CS
SD O
SCL K
C S 551 0/1 2
µ
+5 V
+ 5 V
C oun te r /T im e r
S C L K = 1 0 k H z to 1 0 0
(3 2 .7 6 8
)
S C L K = 10 kH z t o 10 0 kH z
( 3 2. 768 n o m i n a l
)
Figure 19. Load Cell Bridge Amplifier and A/D Converter



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