DEMO MANUAL DC1338A
HARDWARE SETUP
Connection to DC590 Serial Controller
J1 is the power and digital interface connector. Connect
to DC590 serial controller with supplied 14 conductor
ribbon cable.
Jumper Settings
V1, V2, V3, V4:
These jumpers can be toggled between
VOLT and TEMP. VOLT connects the corresponding input
on the LTC2990 with the corresponding turret for an exter-
nal input. TEMP connects the corresponding input to the
onboard FMMT3904 (V3 and V4) or the FMMT3906 (V1
and V2). Please note that the jumpers should be moved in
pairs, V1 and V2 should both be connected either to VOLT
or TEMP and V3 and V4 should also be both connected
to either VOLT or TEMP. Once set, the proper selection
should also be made inside the QuikEval software in the
mode box to reflect any changes made.
V
CC
:
EXT allows the LTC2990 to be powered from an ex-
ternal supply of 2.9V to 5.5V, connected to the VCC EXT
and GND turrets. If set to INT, the LTC2990 is powered
by the attached DC590B.
ADR0, ADR1:
These jumpers are used to select the I
2
C
address for the LTC2990. When used with QuikEval, the
correct address should also be selected from within the
software.
Analog Connections
Analog signal connections are made at turrets V1, V2, V3
and V4. Single-ended input range is 0 to V
CC
, differential
is ±300mV with a common mode range of 0 to V
CC
. When
connecting the board to an existing circuit the exposed
ground planes along the edges of the board may be used
to form a solid connection between grounds.
GND (2 locations):
This turret is connected directly to the
internal ground planes.
VCC EXT:
This turret allows the user to provide V
CC
to the
LTC2990. (2.9V to 5.5V)
V1, V2, V3, V4:
These turrets are used to provide input
voltage to the monitor when the corresponding jumpers
are set to the VOLT position.
V
+
:
Unregulated 10V coming from the DC590B. Turret
provided for testing purposes only. Presence of 10V
indicates proper connection of DC590B.
dc1338af
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