EVAL-AD7476 Datasheet, PDF (3/12 Pages) Analog Devices – Evaluation Board for 1MSPS, 12-/ 10-Bit ADCs

EVAL-AD7476/77CB
SET-UP CONDITIONS
Care should be taken before applying power and signals to the evaluation board to ensure that all link positions are
as per the required operating mode. Table I shows the position in which all the links are set when the evaluation
board is sent out.
Table I. Initial Link and Switch Positions
Link No.
LK1
Position
Removed
Function.
50W termination resistor is not applied to the input of the VIN circuit.
LK2
Removed
AD780 is set to provide a +2.5V reference.
LK3
Removed
50W termination resistor is not applied to the input of the bias-up circuit.
LK4
Removed
This is not relevant due to the position of LK12.
LK5
A
LK6
A
LK7
A
EVAL-CONTROL BOARD is selected as the DC bias voltage for the optional
bias-up/filter circuit.
+12V supplied from EVAL-CONTROL BOARD via J4.
-12V supplied from EVAL-CONTROL BOARD via J4.
LK8
B
SCLK signal from EVAL-CONTROL BOARD is not inverted, (for faster values
of SCLK).
LK9
B
SCLK signal from EVAL-CONTROL BOARD is not inverted, (for faster values
of SCLK).
LK10
Removed
This is not relevant due to the position of LK8 and LK9, (As 74LS04 is not in
use).
LK11
A
Ain SMB is connected to the input of the analog input buffer.
LK12
B
VDD for the AD7476/77 is supplied from the EVAL-CONTROL BOARD via J4.
REV. 0
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