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dc2319af
DEMO MANUAL DC2319A
Description
LTC6363
Fully Differential Amplifier
is a low power, low noise differential op amp
with rail-to-rail output swing and good DC accuracy. The
amplifier may be configured to process a fully differential
input signal or to convert a single-ended input signal to
a differential output signal. The differential outputs of the
DC2319A can be configured with a first order RC network
for driving the differential inputs of an ADC. The DC2319A
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.
can be DC-coupled or AC-coupled. Onboard jumpers con-
figure the DC2319A for dual or single power supply. In
addition, there are multiple optional surface-mount pads
that can be used to change the LTC6363 configuration.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2319A
Table 1. LTC6363 Versions
PART NUMBER
DEMO CIRCUIT NUMBER
DESCRIPTION
LTC6363
DC2319A-A
Gain Set with External Resistors
LTC6363-1
DC2319A-B
Internal Gain Resistors G = 1
LTC6363-2
DC2319A-C
Internal Gain Resistors G = 2
LTC6363-05
DC2319A-D
Internal Gain Resistors G = 0.5
Quick start proceDure
Refer to Figure 1a. Check to ensure that both jumpers, JP1
and JP2, are set as shown. (JP1 to PWR_ON and JP2 to
SINGLE SUPPLY). Power up the DC2319A from a single
power supply, V
+
= 5V and GND = 0V. Connect VIN
–
to
ground using E8. Connect an input voltage to VIN
+
using
E7. The differential output voltage can then be measured
on VOUT
–
and VOUT
+
(E9 and E10). The outputs will be
level-shifted to be balanced symmetrical around approxi-
mately 2.5V. The difference between the outputs will be
the gain multiplied by the difference between the inputs.
For a similar setup using a split supply, change the setting
of JP2 to DUAL SUPPLY, and connect a negative supply
to V
–
. See Figure 1b.
