Analog Devices EVAL-AD4114, Руководство пользователя

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UG-1819 EVAL-AD4114SDZ User Guide
Rev. 0 | Page 6 of 24
SERIAL INTERFACE
The EVAL-AD4114SDZ connects via the SPI to either the SDP
connector or Arduino header. There are four primary signals,
three inputs (CS, SCLK, and DIN), and one output from the
ADC (DOUT/RDY).
The EVAL-AD4114SDZ connects to any microcontroller board
that uses the Arduino standard headers. The Arduino standard
headers allow the user to develop code for a variety of platforms.
To operate the EVAL-AD4114SDZ in standalone mode, disconnect
any
SDP board connected, remove the jumpers in the J6 header,
and use the middle row of pins on J6 to access all SPI signals
and set the input/output voltage levels.
POWER SUPPLIES
By default, the EVAL-AD4114SDZ is powered from the USB.
The EVAL-AD4114SDZ can also be powered from the J4
connector by setting LK3 to Position A, or from Pin +5V on
Connector J6 (see Table 2).
The ADuM5411 iso Power® digital isolator is used to isolate
power and data lines up to 2.5 kV rms.
ANALOG INPUTS
Sixteen voltage inputs are available on J2 and J3. If a different
common voltage must be set for single-ended measurement,
remove LK2 and connect the desired voltage to VINCOM on J3.
REFERENCE OPTIONS
The EVAL-AD4114SDZ includes an external 2.5 V reference,
the
ADR4525ARZ . By default, LK1 is inserted, connecting the
external reference to the REF+ pin of the AD4114 . Remove LK1
if using a different single-ended external reference.
In the
AD411x Eval+ evaluation software, click the blue + pop-
up button associated with Setup 0 to Setup 7 to select the
reference used for conversions by the
AD4114 (see Figure 16).
The pop-up button is located below the external reference
controls in the block diagram (Label 7 in Figure 16).
Table 2. Connector Details
Connector Function Connector Type Manufacturer Part Number
J1 Connects to the GPIOx pins of the
AD4114
4-pin header, 2.54 mm pitch Harwin M20-9990445
J2, J3 Voltage inputs to AD4114 Connectors, header, 90°, 9-position, 3.81 mm Phoenix Contact 1803345
J4 External supply voltage (optional) Power socket block, 3-way, 3.81 mm pitch Phoenix Contact 1803280
J7, J10 Arduino headers 8-position receptacle connectors, 2.54 mm pitch Samtec SSQ-108-03-G-S
J8 Arduino header 6-position receptacle connector, 2.54 mm pitch Samtec SSQ-106-03-G-S
J9 Arduino header 10-position receptacle connector, 2.54 mm pitch Samtec SSQ-110-03-G-S
J11 Arduino ICSP header 6-position, 2 row, receptacle connector,
2.54 mm pitch Samtec SSQ-103-03-G-D
J12 SDP connector 120-way connector, 0.6 mm pitch HRS FX8-120S-SV(21)
J13 Earth for electrostatic discharge
(ESD) testing
Not applicable Not applicable Not applicable