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6
4. Connect the
J1
header on the ADC121C021
evaluation board to the WV4 serial connector
(
J7
) on the WV4 board. Refer to
Figure 6
for
the serial connection and
Figure 7
for the J1
header pin out.
Figure 6: WV4 to ADC121C02XEB Connection
Figure 7: J1 (WV4S) Header Pin Out
5. Perform step 6 of section 3.1 to drive the
analog input. For information on changing the
configuration of the analog input section, read
S
ection 2.0
Board Assembly for details. The
board comes ready for a DC coupled input
signal.
6. Connect a clean (not switching) +5.0V power
source with a 350mA current limit to power
connector
J1
on the WV4 board. Turn on the
power supply.
7. Refer to
Section 5.0
on Software Operation
and Settings to setup the WaveVision 4
software.
4.0 Functional Description
4.1 Jumper Settings
Table 1
describes the function of the various
jumpers on the ADC121C021 evaluation board.
The evaluation board schematic is shown in
Figure 10
.
Jumper
Pins 1 & 2
Pins 2 & 3
JP1
Select direct V
IN
circuit
Select Amplified V
IN
circuit [LMP7731]
JP2
Enable I
2
C Pull-up resistors
JP3
Permanently shorted
JP5
VA SELECT
(See Below)
JP6
Not Used
JP7
Enable 4.1V Shunt Reference
[LM4050-4.1]
Jumper JP5
(VA SELECT)
Pins 1 & 2
Select 3.3V regulated supply from WV4S
connector.
[LM1117MPX-3.3 on the WV4 board]
Pins 3 & 4
Select 5.0V supply from WV4S connector.
Pins 5 & 6
Not Used
Pins 7 & 8
Select 4.1V shunt reference supply.
[LM4050-4.1]
Pins 9 & 10
Select external supply from TP7.
Table 1: Jumper Configurations
SDA
(ADC)
1
3
5
7
9
11
13
2
4
6
8
10
12
14
GND
N/C
SDA
(EEPROM)
+3.3V
SCL
(EEPROM)
GND
+5V
N/C
SDA
(ADC)
