EVAL-AD7764EBZ Analog Devices Inc, EVAL-AD7764EBZ Datasheet - Page 4

• Manufacturer Part Number: EVAL-AD7764EBZ
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7764EBZ

• Lead Free Status / Rohs Status: Supplier Unconfirmed

EVAL-AD7764/AD7765EBZ
LINK OPTIONS
The link options on the evaluation board should be set for the required operating setup before using the board. The functions of these
links are described in Table 1.
Table 1. Link Options
Link No.
LK3
LK4
LK5
LK6
LK7
R27,
R28,
R29,
R30.
Function
FPGA enable.
Selects the voltage supply to
power the FPGA outputs.
Selects the input/output voltage
for Data Buffer.
Output enable for Data
Buffer U10
Selects the V
Clock Buffers U11 and U12.
A 0 Ω link must be placed in
either pair of resistors, R27 &
R29, or R28 & R30 to select the
MCLK source for the
AD7764/AD7765 device.
DD
voltage for
Position Descriptions
Position A connects Pin 43 of the FPGA to GND. This sends all the pins of the FPGA
device to three-state so that the FPGA is bypassed.
Position B connects Pin 43 of the FPGA to logic high 2.5 V. The FPGA is now fully
operational. This link must be in Position B for the evaluation board to function
with the EZ-KIT Lite.
Position A digital drive voltage for the FPGA is taken from the Blackfin PPI
connector.
Position B digital drive voltage for the FPGA is taken from the EVAL-AD776xEB
DVDD supply.
Position A selects DVDD supply from the EVAL-AD776xEB.
Position B selects External Voltage Connector J6 to provide this voltage.
Position A selects the DVDD supply: outputs permanently enabled.
Position B Selects GND, outputs disabled.
Position A selects V
Position B selects V
R27 & R29 routes the buffered 40 MHz on-board crystal oscillator to the MCLK
pin of the AD7764/AD7765 device.
R28 & R30 allows the user to input an external MCLK signal through the MCLK
SMB connector (J7), which is buffered (by U12) and routed to the MCLK pin of
the AD7764/AD7765 device.
Rev. PrB | Page 4 of 15
DD
DD
= 2.5 V
= 5 V.
Preliminary Technical Data
Default
Position B
Position B
Position A
Position A
Position A
R27 & R29