Datasheet

5
4
3
2
1
J1
R3
R4
C6
4700pF
C4
NI
C5
NI
CHA+
CHA-
R1
R2
C2
4700pF
C1
NI
C3
NI
CHB-
CHB+
47
47
47
47
R6
R5
5
9
4
8
3
7
2
6
1
OUTB
OUTA
CLKOUT
21
20
19
12
12
CLK1
CLK2
MDAT2
MDAT1
BVDD
AVDD
C15
4.7 Fm
C16
4.7 Fm
9-Pin FemaleD
www.ti.com Digital Interface
2.1 Analog Inputs
The analog input to the ADS1209EVM board consist of two simple R/C filter circuits. The input circuit for
the ADS1209 is shown in Figure 1.
Figure 1. ADS1209EVM Schematic: Analog Input Section
3 Digital Interface
The ADS1209EVM is designed for use with digital filters such as the AMC1210. The output and power for
the ADS1209 are routed to a 9-pin, female D-type connector. Both the analog and digital power for the
ADS1209, as well as the modulator data and clock outputs from the device under test, are routed to J2, as
Figure 2 illustrates.
Figure 2. Power and Digital Outputs
3
SBAU167–March 2010 ADS1209EVM
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