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dc2071afc
DEMO MANUAL DC2071A
DESCRIPTION
LTC2374/LTC2373/LTC2372
16-Bit/18-Bit, 1.6Msps/1Msps/500ksps
8-Channel, SAR ADCs
Demonstration circuit 2071A features the LTC
2373 family.
The LTC2374/LTC2373/LTC2372 are low noise, high speed,
8-channel, 16-/18-bit successive approximation register
(SAR) ADCs. The following text refers to the
but applies to all parts in the family, the only differences
being the number of bits and the maximum sample rate.
Operating from a single 5V supply, the LTC2373-18 has a
highly configurable, low crosstalk, 8-channel input multi-
plexer, supporting fully differential, pseudo-differential uni-
polar and pseudo-differential bipolar analog input ranges.
The DC2071 demonstrates the DC and AC performance of
the LTC2373-18 in conjunction with the DC590 and DC890
data collection boards. Use the DC590 to demonstrate DC
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
QuikEval and PScope are trademarks of Linear Technology Corporation. All other trademarks are
the property of their respective owners.
performance such as peak-to-peak noise and DC linearity.
Use the DC890 if precise sampling rates are required or to
demonstrate AC performance such as SNR, THD, SINAD
and SFDR. The demonstration circuit 2071 is intended to
demonstrate recommended grounding, component place-
ment and selection, routing and bypassing for this ADC.
Several suggested driver circuits for the analog inputs
will be presented.
Design files for this circuit board, including the
schematic and BOM, are available at
http://www.linear.com/demo/DC2071A
ASSEMBLY OPTIONS
Table 1. DC2071A Assembly Options
Assembly Version
U1 Part Number
Max Conversion Rate
Number of Bits
Max CLK IN Frequency
DC2071A-A
LTC2373CUH-18
1Msps
18
62MHz
DC2071A-B
LTC2372CUH-18
0.5Msps
18
31MHz
DC2071A-C
LTC2374CUH-16
1.6Msps
16
86.4MHz
DC2071A-D
LTC2373CUH-16
1Msps
16
50MHz
DC2071A-E
LTC2372CUH-16
0.5Msps
16
25MHz
