Datasheet

+3V
+3V
0.1 Fm
0.1 Fm
0.1 Fm
27W
R1
R2
+5V
0.1nF
IN+
IN-
OPA4354
27W
R1
R2
+5V
OPA4354
FPGA
or
ASIC
CH A+
AV
DD
CHA-
Output
Interface
Circuit
RC
Oscillator
20MHz
Out EN
Clock
Select
Divider
REFIN A
Reference
Voltage
2.5V
REFOUT
OUTA
OUT B
OUT C
OUT D
CLKIN
AGNDAGNDAGNDAGND
BV
DD
CLKOUT
BV
DD
BGND
+5V
0.1 Fm
+5V
0.1 Fm
+5V
0.1 Fm
+5V
0.1 Fm
CLKSEL
AV
DD
AV
DD
AV
DD
AV
DD
CHB+
CHB-
REFINB
CHC+
CHC-
REFINC
2nd-Order
DS Modulator
CHD+
CHD-
REFIND
27W
R1
R2
+5V
0.1nF
IN+
IN-
OPA4354
27W
R1
R2
+5V
OPA4354
27W
R1
R2
+5V
0.1nF
IN+
IN-
OPA4354
27W
R1
R2
+5V
OPA4354
27W
R1
R2
+5V
0.1nF
IN+
IN-
OPA4354
27W
R1
R2
+5V
OPA4354
+5V
OPA336
2nd-Order
DS Modulator
2nd-Order
DS Modulator
2nd-Order
DS Modulator
ADS1204
SBAS301C – OCTOBER 2003 – REVISED FEBRUARY 2009 ........................................................................................................................................... www.ti.com
Figure 27. Differential Connection Diagram for the ADS1204 Δ Σ Modulator
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Product Folder Link(s): ADS1204