Analog Devices EVAL-ADG5404FEBZ, User Manual

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EVAL-ADG5404FEBZ User Guide UG-790
Rev. A | Page 5 of 10
JUMPER SETTINGS
LINK HEADERS
Use the link headers to control the ADG5404F manually, to
configure the digital control voltage, and to isolate the LED
from the system. Table 2 lists the link header descriptions, and
how the links can be used on the evaluation board.
Use LK3 and LK4 to control the switches of the
ADG5404F . Use
LK2 to enable or disable the device.
Position A ties to GND and sets the logic low, whereas Position B
ties to DC_V1 and sets the logic high.
Table 1. ADG5404F Truth Table
LK2 (EN) LK3 (A0) LK4 (A1) Connected Sx
A X 1 X 1 All switches off
B A A S1
B B A S2
B A B S3
B B B S4
1 X = don’t care.
LK1 allows the user to configure the drain state during an
overvoltage condition.
LK6 connects the on-board LDO regulator to the V
DD
supply.
Remove the header to protect the LDO regulator from voltages
higher than 28 V or to use an alternative digital control voltage.
Change the header on LK5 to Position B to connect to DC_V1.
LK8 connects the LED to the digital power supply, and LK7
connects the FF pin or the SF pin of the
ADG5404F to the LED.
SMB CONNECTORS
Control the parallel interface of the ADG5404F manually by
using the link headers of LK2 through LK4, or access the
interface by using the SMB connectors (A0/F0, A1/F1, and EN).
To use the SMB connectors, remove the link headers of LK2
through LK4. Use the FF/SF SMB connectors to access the FF/SF
digital outputs from the
ADG5404F .
Table 2. Link Header Descriptions
Link Header Position Description
LK1 A VDD or VSS during an overvoltage
B Open circuit during an overvoltage
LK2 A All switches off (disabled)
B Device enabled (EN pin), switch
function set by A0/F0 and A1/F1 pins
LK3 A Logic 0 on A0/F0 pin
B Logic 1 on A0/F0 pin
LK4 A Logic 0 on A1/F1 pin
B Logic 1 on A1/F1 pin
LK5 A DC_V1 digital voltage
B On-board LDO regulator digital
voltage
LK6 Inserted LDO regulator powered up
Removed LDO regulator unpowered
LK7 Inserted FF/SF pins connected to LED
Removed FF/SF pins disconnected from LED
LK8 Inserted LED powered up
Removed LED unpowered
LK9 A FF pin controls the LED
B SF pin controls the LED