Sockets/Connectors; Test Points - Analog Devices AD7091R User Manual

AD7091R User Guide
Table 2. Link Options
Default
Category Link Position
Buffer LK1 A
Settings
LK2 A
LK3 Fitted
Termination LK4 Inserted
Power LK5 A
Supplies
LK6 A

SOCKETS/CONNECTORS

The connectors and sockets on the
outlined in Table 3.
Table 3. On-Board Connectors
Connector Function
J1 9 V, 2.0 mm dc jack connector
J2 External VDD and AGND power connector
J3 External VDRIVE and DGND power connector
J4 120-way connector for
J5 VIN analog input signal
J6 VINB analog input signal to bias up circuit
J7 External reference voltage connector
The default interface to this evaluation board is via the 120-way
connector, which connects the
EVAL-SDP-CB1Z board.
Function
This link is used to select the analog signal path.
In Position A, the analog signal is buffered via U2, a unity gain buffer.
In Position B, the analog signal is buffered via U3, a unity gain buffer.
In Position C, the analog signal bypasses U2 and U3.
This link is used to select the source of the analog input signal to the AD7091R.
In Position A, the analog signal is sourced via the U2 op amp.
In Position B, the analog signal is sourced via the U3 op amp.
In Position C, the analog signal bypasses U2 and U3.
This resistor link option is used to select a biased signal as the analog input signal.
Fitted—bias up circuit connected to the signal path.
Not fitted—bias up circuit disconnected from the signal path.
Adds a 51 Ω termination resistor to AGND at VIN.
Inserted—51 Ω termination on the VIN input.
Not inserted—no 51 Ω termination on the VIN input.
This link is used to select the source of the VDRIVE supply for the AD7091R.
In Position A, the VDRIVE supply is sourced externally via the J3 connector.
In Position B, the VDRIVE supply is sourced from the
This link is used to select the source of the VDD supply for the
In Position A, the VDD supply is sourced internally from the on-board power supplies.
In Position B, the VDD supply is sourced externally via the J2 connector.
EVAL-AD7091RSDZ are as
EVAL-SDP-CB1Z interface
EVAL-AD7091RSDZ to the

TEST POINTS

There are numerous test points on the
board. These test points enable the user to have easy access to
the signals from the evaluation board for probing, evaluation,
and debugging.
It is also possible to access the
operate the EVAL-AD7091RSDZ
the need for the
Rev. 0 | Page 5 of 20
EVAL-SDP-CB1Z via the J4 connector.
AD7091R and on-board buffers.
EVAL-AD7091RSDZ
AD7091R via the test points to
in standalone mode without
EVAL-SDP-CB1Z board.
UG-409