Analog Devices EVAL-ADAQ4380-4 User Manual page 5

User Guide
EVALUATION BOARD HARDWARE
Table 1. On-Board Power Supplies (Continued)
Power Supply (V) Function
+5.0 (default) VS+, REFIN, IN_LDO, and EN_LDO supply rail from
ADP7142-5.0.
+3.45 (default) VCC and VLOGIC supply rail from the internal LDO.
ANALOG INPUTS
The SMA connectors (INA+ and INA−, INB+ and INB−, INC+
and INC−, and IND+ and IND−) on the EV-ADAQ4380-4FMCZ, EV-
ADAQ4370-4FMCZ, and EV-ADAQ4381-4FMCZ evaluation boards
are used to provide analog inputs from a low noise, audio precision
signal source (such as the SYS-2700 or the APX-500 series). Ana-
log inputs are directly feed through the ADAQ4380-4, ADAQ4370-4,
or ADAQ4381-4, as shown in
amplifiers (A1, A2, A3, and A4), can be set up to any gain config-
uration to drive the inputs of the ADAQ4380-4, ADAQ4370-4, or
ADAQ4381-4 for high input impedance applications. In the default
board configuration, analog input signals are fed directly to the
inputs of the ADAQ4380-4, ADAQ4370-4, or ADAQ4381-4.
To evaluate dynamic performance, a fast Fourier transform (FFT),
integral non-linearity (INL), differential non-linearity (DNL), or time
Table 2. Link Options with Factory Default Setting
Link Default
LKA, LKB, LKC, LKD 1 to 2, 7 to 8,
9 to 10, 11 to 12
J1 1 to 2
J2 1 to 2
J3 1 to 2, 3 to 4,
5 to 6
MODE 1 to 2
ENABLE 1 to 2
Table 3. Jumper Positions with Factory Default Setting
Jumper Default
JP1, JP5, JP10, JP14 2 to 3
JP2, JP6, JP9, JP13 2 to 1
JP3, JP4, JP7, JP8, JP11, Not installed
JP12, JP15, JP16
R2, R4, R6, R8 Not installed
(fully differential input)
analog.com
EVAL-ADAQ4380-4/EVAL-ADAQ4370-4/
Figure 2. The provision for optional
Function
μModule gain configuration
3.3 V input
VLOGIC input
μModule power supply
MODE_FDA control voltage
PD_FDA control voltage
Function
Optional buffers
Optional buffers
Optional buffers
μModule input configuration
EVAL-ADAQ4381-4
domain (waveform and histogram) test can be performed by apply-
ing a very-low distortion AC source.
For low-input frequency testing below 100 kHz, it is recommended
to use a low noise, audio-precision signal source, APX-500, set at
high-performance sine generator. A different precision signal source
can be used alternatively with additional band-pass filtering. The
filter bandwidth depends on input bandwidth of interest.
Multiple link options must be set correctly for the appropriate oper-
ating setup before applying the power and signal to the evaluation
board.
The EV-ADAQ4380-4FMCZ, EV-ADAQ4370-4FMCZ, and EV-
ADAQ4381-4FMCZ evaluation boards are factory configured to
provide the appropriate input signal type, single-ended or fully
differential, and different gain/attenuation or input range scaling.
Table 2 and Table 3 lists the necessary link options and jumper
positions for different configurations.
Comment
Gain = 0.3. For the link configuration on different gain options, see
6.
Takes 3.3 V from the FMC. Change shunt to Pin 2 and Pin 3 when using external 3.3
V supply.
Utilizes the 3.45 V from the internal LDO. Change shunt to Pin 2 and Pin 3 when
external VLOGIC supply is required.
Utilizes the on-board +5 V power supply. Disconnect shunts when supplying external
voltages to VS+, VS−, and IN_LDO thru respective header pins.
FDA power mode. Change shunt to Pin 2 and Pin 3 to enter low power mode.
FDA enable. Change shunt to Pin 2 and Pin 3 to disable the FDAs (ADC Drivers).
Comment
Change to 2 to 1 to utilize optional buffers provision.
Change to 2 to 3 to utilize optional buffers provision.
Install 0 Ω when using the provision for optional buffers.
Install 0 Ω for single-ended input configuration.
Figure 3 to Figure
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