Datasheet

LVDS LVDS
GND
5V
VSS-
VSS+
ADS
6149
CLKIN
IN+
J7
J11
J9
J12
SJP5
1
IN-
J10
J19
J20
J21
J6
J8
CDC
OUT
VCXO
OUT
J5
J17
USB
0
SJP3
1
0
SJP1
1
0
SJP2
1
0
SJP8
1
0
SJP4
1
0
SJP6
1
0
SJP7
1
0
R84
R24
R23
R102
R67
R66
R65
R20(bottom)
R7 (bottom)
R19 (bottom)
R12 (bottom)
2.2.1 Power
Circuit Description www.ti.com
Figure 2. ADS61x9/55xx Surface Jumpers
The following sections describe the function of individual circuits. See the relevant data sheet for device
operating characteristics.
Power is supplied to the EVM through banana jacks and from this input power several different ways of
delivering power to the ADC and other EVM functions are available. Figure 3 shows a simplified
representation of the power options available for the ADS61x9/55xx. The default option is to provide 5 V to
the red banana jack J7, and from there the EVM generates 3.3 V for the analog supply to the ADC and
1.8 V for the digital supply to the ADC. The EVM also generates the proper voltages for optional features
of the EVM such as the Clock Generation circuitry, the USB circuitry, and the CMOS output buffer.
8 ADS61x9/55xxEVM SLWU061A – December 2008 – Revised June 2009
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