ADS-238Q 데이터 시트보기 (PDF) - DATEL Data Acquisition products
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ADS-238Q Datasheet PDF : 7 Pages
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®
®
ADS-238Q
RF In
Ref– In
(+1.15V)
Ref+ In
(+2.15V)
+
4.7µF
90µA
9.5µA
0.01µF
(+1.65V)
68pF
51
Minicircuit
T1-6T
4.7µF
+
0.01µF
+3.3V
10µF
+
CLK In
(3V Logic)
0.01µF
11
12
NC
NC
NC
GND
Bias1
Bias2
VCM
GND
VIN+
VIN–
GND
22
23
0.01µF
ADS-238Q
GND
+3.3V
0.1µF
1
44
VS
Bit 12 (LSB)
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
34
33 Bit 2
Bit 1(MSB)
+3.3V
Digital
Decoupling
Cap
Interfacing
3V Logic
AGND
Ferrite Bead
EXC-ELSA35
DGND
Figure 2. ADS-238QTypical Connection Diagram
0.01µF
VCM
RF In
51
(+1.65V)
Minicircuit
T1-6T
68pF
VIN+
VIN–
Figure 3-1. ADS-238Q Transformer Coupled Input
R3
R3
–
VCM
+
OP191GP
(R3)/2
R
INPUT
( +– 0.5V)
R
–
51W
+
VIN+
R2
OPA642
R2
15pF
OPA642
–
51W
51W +
VIN–
R
R
R
Figure 3-2. ADS-238Q DC Coupled Single Ended Input
3
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