Datasheet
UG-478 EVAL-AD7176-2SDZ User Guide
Rev. A | Page 10 of 40
Figure 7. Setup for the ADA4940-1 and AD8475 Amplifiers
Table 6. R/C Components for ADA4940-1 (Single-Ended to Differential Driver)
Component Status
R66 0 Ω
R75 0 Ω
R76 0 Ω
R77 0 Ω
R96
1
Not inserted
R97
1
Not inserted
R98 0 Ω
R34
0 Ω
R39
0 Ω
C19
270 pF
C59 270 pF
C23 680 pF
1
Insert 0 Ω resistors in R96 and R97 to connect the ADA4940-1 to the AD7176-2, and place the SL8 and SL11 solder links in Position C. Ensure that the R72 and R100
resistors are removed.
Table 7. R/C Components for AD8475 (Attenuating Single-Ended to Differential Driver)
Component Status
R63 0 Ω
R64
1
Not inserted
R74
1
Not inserted
R78 0 Ω
R46 0 Ω
R47 0 Ω
C27 270 pF
C28 270 pF
C26 680 pF
1
Populate R64 and R74 with 10 Ω resistors to connect the AD8475 to the AD7176-2, and place the SL9 and SL10 solder links in Position C. Ensure that the R110 and R120
resistors are removed.
11035-036
R96
R97
R34
R39
C19
C59
C23
R64
R47
R74
R46
C28
C27
C26
3
REF+
2
REF–
21
AIN0
22
AIN1
23
AIN2
4
REFOUT
24
AIN3
6
AVSS
7
AVDD1
8
AVDD2
0.1µF
+5V
0.1µF 0.1µF
AD7176-2
+5V
0.1µF
4.7µF
0.1µF
ADR445
5V VREF
0.1µF
13
12
11
14
SCLK
DIN
CS
DOUT/RDY
0.1µF
+5V
IN0
IN1
R96R66
R75
R77
0.1µF
+5V
IN2
IN3
AD8475
ADA4940-1
R98
R63
VOCM
VOCM
2.5V
R78
+IN 0.4×
–IN 0.4×