Linear Technology DC890B User manual

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DEMO MANUAL DC890B
DESCRIPTION
DC890B QuickStart Guide
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PScope
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
BOARD PHOTO
Figure 1. DC890B Board
Demonstration circuit DC890B along with PScope™ soft-
ware provides a USB based Windows PC hosted digital
data acquisition system supporting CMOS/LVDS output
ADCs up to 250Msps. The DC890B must be powered from
an external 6VDC ±0.5VDC power supply when operat-
ing in LVDS mode. When operating in CMOS mode, the
external power supply is optional. The Linear Technology
supplied PScope evaluationsoftware automatically detects
the DC890B and can also detect many of the standard
ADC demonstration circuits boards. The DC890B will
not enable LVDS mode unless an external 6.0VDC power
source is available. This system provides for fast and easy
performance evaluation of high speed ADCs. DC890B
collects up to 256K word samples and then performs
various analyses on the data including calculating SNR,
SINAD, THD, SFDR and ENOB. The digitized input, an FFT
of the collected data, the primitive wave of the sample set
or an IFFT of modified frequency domain data is plotted to
a display window to facilitate analyzing distortion products
and sources. Figure 1 shows a picture of the DC890B. The
DC890B is connected to the ADC demonstration circuit via
a 100-pin edge connector, to the PC by a USB A-B cable and
to an optional power supply either by a 5mm power plug
or optionally by turrets. Figure 2 details the connections.
Design files for this circuit board are available at
http://www.linear.com/demo

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DEMO MANUAL DC890B
SCHEMATIC DIAGRAM

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DEMO MANUAL DC890B
SCHEMATIC DIAGRAM

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DEMO MANUAL DC890B
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
SCHEMATIC DIAGRAM

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DEMO MANUAL DC890B
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ●FAX: [phone] ●www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2012
LT 0612 • PRINTED IN USA
DEMONSTRATION BOARD IMPORTANT NOTICE
Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions:
This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT
OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete
in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety
measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union
directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.
If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date
of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU
OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS
FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR
ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LTC from all claims
arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all
appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or
agency certified (FCC, UL, CE, etc.).
No License is granted under any patent right or other intellectual property whatsoever. LTC assumes no liability for applications assistance,
customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.
LTC currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.
Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and
observe good laboratory practice standards. Common sense is encouraged.
This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LTC applica-
tion engineer.
Mailing Address:
Linear Technology
1630 McCarthy Blvd.
Milpitas, CA 95035
Copyright © 2004, Linear Technology Corporation