Evaluation Board Hardware; Setting Up The Evaluation Board; Analog Inputs - Analog Devices EVAL-ADAQ8088EBZ User Manual

EVAL-ADAQ8088EBZ

EVALUATION BOARD HARDWARE

SETTING UP THE EVALUATION BOARD

Figure 2 shows the simplified EVAL-ADAQ8088EBZ block
diagram. The ADAQ8088 μModule that is soldered to the
EVAL-ADAQ8088EBZ requires a supply voltage from 2.7 V to
3.3 V. The EVAL-ADAQ8088EBZ allows the user to set the
I_OUT_V pin and Q_OUT_V
OCM
ADAQ8088EBZ through the EXVCMA and EXVCMB jumpers.
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pin of the EVAL-
OCM
J1
I_INP
+
–
J2
I_INN
J4
Q_INP
+
Q_IN_V
OCM
–
J3
Q_INN
Figure 2. Simplified EVAL-ADAQ8088EBZ Block Diagram

ANALOG INPUTS

The EVAL-ADAQ8088EBZ I inputs (I_INP and I_INN) are
connected through the J1 and J2 SMA connectors, respectively,
and the Q inputs (Q_INP and Q_INN) are connected through
the J4 and J3 SMA connectors, respectively.
Table 1. Jumper Details with Factory Default Settings
Link Default
P1 Not
populated
P2 Not
populated
P3 Not
populated
Note that the I-channel and the Q-channel correspond to
Channel A and Channel B, respectively, of the ADAQ8088
data sheet.
P1 P2
VS+ EXVCMA
GND GND
VCC I_OUT_RGP I_OUT_RFN
+
– –
+ – +
I_OUT_RFP
I_OUT_RGN
I_OUT_V
Q_OUT_V
Q_OUT_RFP
Q_OUT_RGN
+
– –
+ – +
GND Q_OUT_RGN Q_OUT_RFP
P3
EXVCMB
GND
Rev. 0 | Page 3 of 12
UG-1825
Function Comment
VS+ ADAQ8088 supply.
EXVCMA Connect EXVCMA to the
common-mode output of the
ADC I-channel. This jumper
can also be left floating.
EXVCMB Connect EXVCMB to the
common-mode output of the
ADC Q-channel. This jumper
can also be left floating.
J7
I_OUTP
J5
I_OUTN
OCM
OCM
J8
Q_OUTP
J6
Q_OUTN