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dc2071afc

DEMO MANUAL DC2071A

DESCRIPTION

LTC2374/LTC2373/LTC2372

16-Bit/18-Bit, 1.6Msps/1Msps/500ksps

8-Channel, SAR ADCs

Demonstrationcircuit2071AfeaturestheLTC®2373family.

TheLTC2374/LTC2373/LTC2372arelownoise,highspeed,

8-channel, 16-/18-bit successive approximation register

(SAR) ADCs. The following text refers to the LTC2373-18

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,supportingfullydifferential,pseudo-differentialuni-

polar and pseudo-differential bipolar analog input ranges.

The DC2071 demonstrates the DC and AC performance of

theLTC2373-18inconjunctionwiththeDC590andDC890

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

demonstraterecommendedgrounding,componentplace-

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