Datasheet

EVAL-AD7294
Rev. 0 | Page 5 of 24
Link No. Function
K15 This link option selects whether the V
OUT
A signal is filtered prior to being supplied to the V
OUT
A SMB.
K15 in Position A: the V
OUT
A signal is filtered by a 100 kΩ resistor and a capacitor. This link option should be used in
conjunction with K16 in Position A to provide the output signal to the V
OUT
A SMB.
K15 in Position B: the V
OUT
A signal from the AD7294 is connected directly to K16. This link option should be used in
conjunction with K16 in Position B to provide the output signal to the V
OUT
A SMB.
K16 This link option connects the V
OUT
A signal to the V
OUT
A SMB. This link should be used in conjunction with K15.
K16 in Position A: the V
OUT
A signal is filtered by a 100 kΩ resistor and a capacitor. This link option should be used in
conjunction with K15 in Position A to provide the output signal to the V
OUT
A SMB.
K16 in Position B: the V
OUT
A signal is connected directly from the AD7294 to the V
OUT
A SMB. This link option should be
used in conjunction with K15 in Position B to provide the output signal directly to the V
OUT
A SMB.
K17 This link option selects whether the V
OUT
B signal is filtered prior to being supplied to the V
OUT
B SMB.
K17 in Position A: the V
OUT
B signal is filtered by a 100 kΩ resistor and a capacitor. This link option should be used in
conjunction with K18 in Position A to provide the output signal to the V
OUT
B SMB.
K17 in Position B: the V
OUT
B signal is connected directly to K18. This link option should be used in conjunction with
K18 in Position B to provide the output signal to the V
OUT
B SMB.
K18 This link option connects the V
OUT
B signal to the V
OUT
B SMB. This link should be used in conjunction with K17.
K18 in Position A: the V
OUT
B signal is filtered by a 100 kΩ resistor and a capacitor. This link option should be used in
conjunction with K17 in Position A to provide the output signal to the V
OUT
B SMB.
K18 in Position B: the V
OUT
B signal is connected directly from the AD7294 to the V
OUT
B SMB. This link option should be
used in conjunction with K17 in Position B to provide the output signal directly to the V
OUT
B SMB.
K19 This link option selects the source of the DAC HIGH-Z pin.
K19 in Position A: the DAC HIGH-Z pin is connected directly to the V
DRIVE
supply.
K19 in Position B: the DAC HIGH-Z pin is connected directly to the AGNDx supplies.
K22 This link option selects the source of the V
DRIVE
supply.
K22 in Position A: the V
DRIVE
supply of the AD7294 is tied directly to the DV
DD
supply.
K22 in Position B: the V
DRIVE
supply of the AD7294 is tied directly to the 3.3 V supply.
Table 2. Link Positions When EVAL-AD7294 Is Packaged
Link No. Position Description
K1 Removed The analog input signal of the AD7294 is connected directly to the V
IN
0 SMB.
K2 Removed The analog input signal of the AD7294 is connected directly to the V
IN
1 SMB.
K3 Removed The analog input signal of the AD7294 is connected directly to the V
IN
2 SMB.
K4 Removed The analog input signal of the AD7294 is connected directly to the V
IN
3 SMB.
K5 A The D1− current sensor input signal is supplied by an external source via the D1− SMB socket.
K6 A The D2− current sensor input signal is supplied by an external source via the D2− SMB socket.
K7 Inserted The AS0 input is connected to DGND, a logic low signal.
K8 Inserted The AS1 input is connected to DGND, a logic low signal.
K9 Inserted The AS2 input is connected to DGND, a logic low signal.
K10 Removed The DV
DD
supply is not connected to the AV
DD
x supplies.
K11 Removed The DAC OUTV+ AB and DAC OUTV+ CD supplies are not connected to the AV
DD
x supplies.
K12 A The DV
DD
digital supply for the AD7294 is supplied by a 5 V supply from the USB port.
K13 A The AV
DD
x analog supplies for the AD7294 are supplied by a 5 V supply from the USB port.
K14 A
The DAC OUTV+ AB and DAC OUTV+ CD supplies for the AD7294 are supplied by a 5 V supply from the
USB port.
K15 B The V
OUT
A signal is connected directly to K16.
K16 B The V
OUT
A signal is connected directly from the AD7294 to the V
OUT
A SMB.
K17 B The V
OUT
B signal is connected directly to K18.
K18 B The V
OUT
B signal is connected directly from the AD7294 to the V
OUT
B SMB.
K19 B The DAC HIGH-Z pin is connected directly to AGNDx supplies.
K22 A The V
DRIVE
supply of the AD7294 is tied directly to the DV
DD
supply.