UG-1770
Rev. A | Page 5 of 16
LINK CONFIGURATION OPTIONS
Multiple link options must be set properly to select the appropriate
operating setup before using the EVAL-AD7383FMCZ. Table 2
details the function descriptions of these link options.
Setup Conditions
Ensure that all link positions are set as required by the selected
operating mode before applying power and signals to the
EVAL-AD7383FMCZ. Table 2 shows the default positions of the
link options when the EVAL-AD7383FMCZ is packaged.
Table 2. Link Option Function Descriptions
Link Name
Function
Position
1
Description
LK1
AMP−
1 (default)
Use the internal −2.5 V from U9 (
) for AMP−.
3
Use the external −2.5 V via P6-3 (see Table 1).
LK2
AMP+
1 (default)
Use the internal 5 V from U8 (
) for AMP+.
3
Use the external 5 V via P6-1 (see Table 1).
LK3
External 12 V supply
1 (default)
Use the 12 V power supply from the
3
Use the external 12 V power supply via P4-1 (see Table 1).
LK4
Reference voltage (V
REF
)
1
Use the external V
REF
source connected via EXTREF (see Table 3).
3 (default)
Use the internal 3.3 V from U3 (
) for V
REF
.
5
This option is not available. The
footprint is in place.
LK5 V
LOGIC
3
Use the internal 2.3 V from U6 (
LOGIC
.
JP1 A
IN
A−
1 (SMD resistor)
Connect the external SMB connector, J1, to A1 (
JP2 A
IN
A−
1 (SMD resistor)
Connect the internal signal from A2 (ADA4896-2) to the
A
IN
A−.
JP3 A
IN
A+
1 (SMD resistor)
Connect the internal signal from A2 (ADA4896-2) to the AD7383 input,
A
IN
A+.
JP4
REFIO
1 (SMD resistor)
Use the internal 2.5 V V
REF
on the AD7383. When using this option, do
not insert the R3 resistor on the EVAL-AD7383FMCZ.
3 (SMD resistor, default)
The REFIO pin is driven with the external on-board reference.
JP5 V
CC
1
Use the internal 3.3 V from U2 (ADP166) for V
CC
.
JP6 A
IN
A+
1 (SMD resistor)
Connect the external SMB connector, J2, to A1 (ADA4896-2).
1
The SMD resistor is the surface-mount device resistor.
