Board Photo - Linear Technology DC1925A Series Demo Manual

DESCRIPTION
The LTC 2378-20, LTC2377-20
®
low power, low noise SAR ADCs with serial outputs that
operate from a single 2.5V supply. The following text
refers to the LTC2378-20 but applies to all parts in the
family, the only difference being the maximum sample
rate. The LTC2378-20 supports a ±5V fully differential
input range with a 104dB SNR, consumes only 21mW
and achieves ±2ppm INL max with no missing codes at 20
bits. The DC1925A demonstrates the DC and AC perfor-
mance of the LTC2378-20 in conjunction with the DC590
QuikEval™ and DC890 PScope™ data collection boards.
Use the DC590 to demonstrate DC performance such as

BOARD PHOTO

LTC2378-20/LTC2377-20/LTC2376-20
20-Bit,1Msps/500ksps/250ksps, Low
Power, SAR ADCs with 104dB SNR
and LTC2376-20 are 20-bit,
Figure 1. DC1925A Connection Diagram
DEMO MANUAL DC1925A
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 1925A is intended to show recom-
mended grounding, component placement and selection,
routing and bypassing for this ADC.
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.
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.
dc1925af
1