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dc1760af
DEMO MANUAL DC1760A
QUICK START PROCEDURE
Figure 1. DC1760 Setup (Zoom for Detail)
Demonstration circuit 1760A is easy to set up to evaluate
the performance of the LTC2261-14 family of A/D convert-
ers. Refer to Figure 1 for proper measurement equipment
setup and follow the procedure below:
Setup
If a DC890 QuikEval™-II data acquisition and collection
system was supplied with the DC1760A demonstration
circuit, follow the DC890 Quick Start Guide to install the
required software and for connecting the DC890 to the
DC1760A and to a PC.
DC1760A Demonstration Circuit Board Jumpers
The DC1760A demonstration circuit board should have
the following jumper settings as default positions: (as
per Figure 1).
V
+
–
3.3V
2.7V TO 5V
SINGLE-ENDED
INPUT SIGNAL
JUMPERS ARE SHOWN
IN DEFAULT POSITIONS
PARALLEL DATA
OUTPUT TO DC890
SINGLE-ENDED
ENCODE CLOCK
V
+
–
MATCHED
SOURCE
IMPEDANCE
PAR/SER: Selects parallel or serial programming mode
(Default: Serial).
Duty Cycle Stabilizer (DCS): In parallel programming mode
enables/disable Duty Cycle Stabilizer (Default: Enable).
SHDN: In parallel programming mode enables and disables
the LTC2261-14 (Default: Enable).
LVDS: In parallel programming mode selects between
CMOS and LVDS outputs. (Default: LVDS, required for
serial programming mode. When using parallel mode the
required setting is CMOS).
AMP_SHDN: Enables and disables the LTC6409. (Default:
Enable)
