Linear Technology DC1500A, Демонстрационное руководство

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dc1500af
DEMO MANUAL DC1500A
DESCRIPTION
LTC2393-16/LTC2392-16/
LTC2391-16: 16-Bit,1Msps/
0.5Msps/0.25Msps
Low Noise ADCs
The LTC ® 2393/LTC2392/LTC2391-16 are low noise high
speed ADCs with both parallel and serial outputs that
can operate from a single 5V supply. The following text
refers to the LTC2393-16 but applies to all three parts.
The only difference being the maximum sample rates. The
LTC2393-16 supports a large ±4.096V fully differential input
range. This makes it ideal for high performance applica-
tions that require maximum dynamic range. Demonstration
circuit 1500A provides the user a means of evaluating the
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
performance of the LTC2393-16 in both parallel and serial
modes and is intended to demonstrate recommended
grounding, component placement and selection, routing
and bypassing for this ADC. Also several suggested driver
circuits for the analog inputs will be presented.
Design fi les for this circuit board are available at www.
linear.com/demo.
Table 1
ASSEMBLY VERSION PART NUMBER MAX CONVERSION RATE
MAX PARALLEL CLK IN
FREQUENCY
MAX SERIAL CLK IN
FREQUENCY
DC1500A-A LTC2393CLX-16 1Msps 1MHz 80MHz
DC1500A-B LTC2392CLX-16 0.5Msps 500kHz 40MHz
DC1500A-C LTC2391CLX-16 0.25Msps 250kHz 20MHz
Figure 1. DC1500A Connection Diagram
CLK_IN
1MHz MAX
(80MHz FOR SERIAL)
3.3V
P-P
MAX
TO
DC718
–9V
dc1500a F01
GND 9V
A
IN
–
0V TO 4.096V MAX
(NOT NEEDED UNLESS
U2 IS DISABLED)
A
IN
+
0V TO 4.096V MAX