Analog Devices EVAL-AD7175-8SDZ, User Manual

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EVAL-AD7175-8SDZ User Guide UG-901
Rev. 0 | Page 5 of 10
SOCKETS AND CONNECTORS
Table 2. Connector Details
Connector Function Connector Type Manufacturer
Manufacturer
Number
Order Code 1
J1 Connector to the EVAL-SDP-CB1Z 120-way connector,
0.6 mm pitch Hirose FX8-120S-SV(21) FEC1324660
A0 to A3 Analog inputs to the ADC Straight PCB mount
SMB/SMA jack Tyco 1-1337482-0 Not applicable
J3 External bench top voltage supply for
the
EVAL-AD7175-8SDZ
Power socket block,
3-pin, 3.81 mm pitch Phoenix
Contact MC 1,5/ 3-G-3,81 FEC3704757
J4 External ac-to-dc adapter input for the
EVAL-AD7175-8SDZ , 7 V to 9 V
DC power
connectors, 2 mm
SMT power jack
Kycon KLDX-SMT2-
0202-A MOUSER 806-
KLDX-SMT20202A
J5 External bench top voltage supply
option for AVDD1/AVDD2 and IOVDD
inputs on the
AD7175-8
Screw terminal
block, 3.81 mm pitch Phoenix
Contact MKDS 1/4-3.81 FEC3704592
J8 GPIO terminal Power socket block,
4-pin, 3.81 mm pitch Phoenix
Contact MC 1,5/ 4-G-3,81 FEC3704749
J10 and
J12 Analog input terminal block; wired
connection to external source or sensor Power socket block,
8-pin, 3.81 mm pitch Phoenix
Contact MC 1,5/ 8-G-3,81 FEC3704774
J14 Analog input terminal block; wired
connection to external source or sensor Power socket block,
6-pin, 3.81 mm pitch Phoenix
Contact MC 1,5/ 6-G-3,81 FEC3704762
J15 Optional header 7-way, 2.54 mm pin
header Samtec SSW-107-01-T-S FEC1803478
J16 Optional header 7-way, 2.54 mm
socket Samtec TLW-107-05-G-S FEC1668499
1 Order codes starting with FEC are for Farnell.
SERIAL INTERFACE
The EVAL-AD7175-8SDZ evaluation board connects to the
Blackfin® ADSP-BF527 on the SDP-B controller board via the
serial peripheral interface (SPI). There are four primary signals,
CS, SCLK, and DIN (all inputs), and one output from the ADC,
DOUT/RDY.
To operate the evaluation board in standalone mode, disconnect
the
AD7175-8 serial interface lines from the 120-pin header by
removing the 0 Ω, R9 through R13 links. Use the test points to
connect the signals to an alternative digital capture setup.
POWER SUPPLIES
Power the evaluation board from the ac-to-dc adapter
connected to J4, or from an external bench top supply applied
to J3 or J5. Linear LDOs generate the required voltages from the
applied input voltage (V
IN
) rail when using J3 or J4. Use J5 to
bypass the on-board regulators. The regulators used are the 5 V
fixed output voltage and 2.5 V adjustable output voltage
ADP1720 devices, which supply the AVDD1 and AVDD2 rails
to the ADC; the ADP1720 (3.3 V) supplies the IOVDD rail. Use
the ADP7104 (5 V) to supply 5 V for the SDP-B controller
board. Each supply is decoupled where it enters the board and
again at each device. Table 3 shows the various power supply
configurations available, including split supply operation.