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dc1908af

DEMO MANUAL DC1908A

DESCRIPTION

LTC2338/LTC2337/LTC2336/

LTC2328/LTC2327/LTC2326

18-Bit/16-Bit,1Msps/500ksps/250ksps

True Bipolar Low Power, Single Supply ADCs

LTC2326 are true bipolar, low power, low noise ADCs

with serial outputs that can operate from a single 5V

supply. The following text refers to the LTC2338-18 but

applies to all parts in the family, the only difference being

the maximum sample rates and the number of bits. The

LTC2338-18 supports a ±20.48V fully differential input

range with a 100dB SNR, consumes only 50mW and

achieves ±4LSB INL max with no missing codes at 18

bits. The DC1908A demonstrates the DC and AC perfor-

mance of the LTC2338-18 in conjunction with the DC590

QuikEval™ and DC718 PScope™ data collection boards.

Use the DC590 to demonstrate DC performance such as

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

QuikEval, PScope are trademarks of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

BOARD PHOTO

peak-to-peak noise and DC linearity. Use the DC718 if

precise sampling rates are required or to demonstrate AC

performance such as SNR, THD, SINAD and SFDR. The

demonstration circuit 1908A is intended to demonstrate

recommended grounding, component placement and

selection, routing and bypassing for this ADC. Suggested

driver circuits for the analog inputs will be presented.

Design files for this circuit board are available at

http://www.linear.com/demo or scan the QR code on

the back of the board.

Figure 1. DC1908A Connection Diagram

-16V

+16V

100MHz

Max

3.3Vpp

AIN+

±10.24V

AIN-

±10.24V

TO DC590

GND

TO

DC718