User Guide
EVALUATION BOARD HARDWARE
Rev. A | 5 of 30
POWER SUPPLIES
The
supplies 3.3 V to power the rails for the dif-
ferent components on the EVAL-ADAQ4001FMCZ and EVAL-
ADAQ4003FMCZ.
The
µModule and
µModule use four power
supply pins: the ADC driver positive supply (VS+), the ADC driver
negative supply (VS−), the core ADC supply (VDD), and the digital
input and output interface supply (VIO). The VIO pin allows the
direct interface with any logic c between 1.8 V and 5.5 V. To reduce
the number of supplies required, VIO and VDD can be tied together
for a 1.8 V operation. A combination of the
(dual, high
performance dc-to-dc switching regulator), the
noise, positive and negative low dropout voltage linear regulator),
and the
(dual, micropower, low noise, low dropout regula-
tor) can generate independently regulated positive and negative
rails for all four power supply pins, including ±15 V rails for any
additional signal conditioning.
Table 1. Default Power Supplies Available on the
and
Power Supply (V)
Function
Components Used
+5.5
Reference rail
ADP5070, LT3032, LT3023
±15
Amplifier rails
ADP5070, LT3032
+1.8, +3.3, or +5.5
µModule rails
ADP5070, LT3032, LT3023
Each supply is decoupled at the EVAL-ADAQ4001PMDZ and
EVAL-ADAQ4003PMDZ entrance and device connection. A single,
on-board ground plane minimizes the effect of the high frequency
noise interference.
In addition, the EVAL-ADAQ4001PMDZ and EVAL-
ADAQ4003PMDZ can be powered from a benchtop power supply
of ±15.5 V. The +15.5 V, −15.5 V, and GND test points are available
on board to support this function. When bench power is used,
the on-board power supplies are no longer required, and the link
between the output pin of the ADP5070 must be removed, that is,
uninstall R20 and R22.
Take the following steps to set up the EVAL-ADAQ4001PMDZ or
EVAL-ADAQ4003PMDZ when using a benchtop power supply of
±15.5 V:
1.
Connect the EVAL-ADAQ4001PMDZ or EVAL-
ADAQ4003PMDZ to the EVAL-PMD-IB1Z interposer board at
).
2.
Connect the EVAL-PMD-IB1Z interposer board to the SDP-H1
via the 160-pin FMC connector.
3.
Connect the USB and a 12 V power adapter to the SDP-H1.
Ensure that the software and drivers are installed.
4.
Connect the +15.5 V and −15.5 V bench supplies to the +15.5
V and −15.5 V test points on the EVAL-ADAQ4001PMDZ or
EVAL-ADAQ4003PMDZ (see
). Connect the bench
supply ground to the GND test point as shown in
5.
Power up the benchtop supply. The +15.5 V supply rail draws
approximately 25 mA, and the −15.5 V supply rail draws ap-
proximately 20 mA.
The EVAL-ADAQ4001PMDZ or EVAL-ADAQ4003PMDZ is now
Analysis | Control | Evaluation (ACE)
soft-
ware. Note that by default, the EVAL-ADAQ4001PMDZ and EVAL-
ADAQ4003PMDZ are setup to accept a differential input at J1 and
J2 with a 22 V range.
Figure 3. EVAL-ADAQ4001PMDZ and EVAL-ADAQ4003PMDZ External Supply
(Optional) Connections
