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DC682A

P1-P3P4-P6
1
dc682af
DEMO MANUAL DC682A
Description
LTC1859
8-Channel, 16-Bit,
100ksps SoftSpan ADC
Demonstration circuit 682A features the LT C
®
1859
8-channel, 16-bit SoftSpan™ ADC. The LTC1859 can be
software programmed for 0V to 5V, 0V to 10V, ±5V, or
±10V input spans while operating from a single 5V sup
-
ply. The 8-channel multiplexer can be programmed for
single-ended inputs or differential pairs or a combination
of both. Also, the inputs are fault protected to ±25V. A
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
SoftSpan and QuikEval are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
BoarD photo
fault condition on any channel will not affect readings on
other channels.
Design files for this circuit board are available at
http://www.linear.com/demo
+
–
SINGLE-ENDED INPUT
DIFFERENTIAL INPUT
TO DC590
V
DIFF
/2
V
DIFF
/2
V
CM
+
–
+
–
+
–
+
–
REFERENCE MONITOR
(OR EXTERNAL REFERENCE–SEE HARDWARE SETUP)
Figure 1. DC682A Connection Diagram
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DEMO MANUAL DC682A
Quick start proceDure
Connect DC682A to a DC590 USB serial controller using the
supplied 14-conductor ribbon cable. Connect DC590 to a
host PC with a standard USB A/B cable. Run the QuikEval™
evaluation software supplied with DC590 or download it
from www.linear.com/software. The correct control panel
will be loaded automatically. Click the COLLECT button to
begin reading the ADC.
Change the channel and range by right-clicking over the
channel or range indicator in the display.
Complete software documentation is available from the
Help menu item, as features may be added periodically.
Figure 2. DC682A Software Screenshot
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DEMO MANUAL DC682A
harDware setup
Jumpers
JP1: Select connection for COM pin, either grounded or
externally supplied through the COM turret.
JP2: Select reference, either internal or the onboard
LT1019 reference.
Analog Connections (Turret Posts)
COM: LTC1859 COM pin. Make sure to select EXT on JP1
when supplying an external bias to this post.
CH0–CH7: Analog inputs to LTC1859. Each input is by
-
passed to ground with a 1000pF capacitor.
V
REF
: Reference pin on LTC1859. When JP2 is set to INT,
the LTC1859 uses its internal reference, or an external
reference can be connected to this pin, overdriving the
internal reference. When JP2 is set to LT1019, this turret
should only be used for monitoring the reference voltage.
Grounding and Power Connections
DC682A does not require any external power source when
used with the DC590 USB controller board. However, an
external 5V power source can be connected to the V
CC
and ground turrets if the power supply on DC590 has
been disabled. Refer to the DC590 demo manual for more
information.
P1-P3P4-P6

DC682A

Mfr. #:
Buy DC682A
Manufacturer:
Analog Devices Inc.
Description:
Data Conversion IC Development Tools LTC1859CG Demo Board - 8-Channel, 16-Bit
Lifecycle:
New from this manufacturer.
Delivery:
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