DC718C Linear Technology, DC718C Datasheet

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DC718C

Manufacturer Part Number
DC718C
Description
USB Data Acquisition Controller, For QuikEval -II Evaluation Kits
Manufacturer
Linear Technology
Series
QuickEval-II™r
Datasheet

Specifications of DC718C

Design Resources
DC718C Design Files DC718C Schematic
Main Purpose
Data Conversion, ADC, DAC
Embedded
Yes
Utilized Ic / Part
-
Primary Attributes
-
Secondary Attributes
USB, I2C, SPI Interface
Kit Application Type
Interface
Application Sub Type
USB Interface
Kit Contents
QuickEval-II Software
Lead Free Status / Rohs Status
Not applicable / Not applicable
DESCRIPTION
QuickEval-II™ software along with demonstration circuit
DC718 provides a USB based Windows PC hosted digital
data acquisition system supporting CMOS/LVTTL output
ADCs up to 105Msps. The DC718 can be powered from
either the USB port or from an external 6-9VDC Power
supply (for lower noise operation or very high speed
operation where the SRAM power requirements exceed
the USB port capability). The Linear Technology sup-
plied QuickEval-II evaluation software automatically de-
tects the DC718 and in select cases can also detect the
ADC demonstration circuit under evaluation.
QuickEval-II system provides for fast and easy perform-
QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 718
Figure 1. DC718 BLOCK DIAGRAM
The
ance evaluation of high speed ADCs by collecting up to
128K word samples and then performing various analy-
ses on the data including calculating SNR, SINAD, THD,
SFDR, ENOB and displaying the digitized input, an FFT of
the data, the Primitive Wave of the sample set or a IFFT
of modified frequency domain data to facilitate analyzing
distortion products and sources. Figure 1 shows a block
diagram of the DC718. The DC718 is connected to the
ADC demonstration circuit via a 40 pin edge connector,
to the PC by a USB A-B cable and to an optional power
supply by a 5mm plug.
QUICKEVAL-II
1

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DC718C Summary of contents

Page 1

... USB port or from an external 6-9VDC Power supply (for lower noise operation or very high speed operation where the SRAM power requirements exceed the USB port capability). The Linear Technology sup- plied QuickEval-II evaluation software automatically de- tects the DC718 and in select cases can also detect the ADC demonstration circuit under evaluation ...

Page 2

OPERATING PRINCIPLES The DC718 is capable of collecting a block of data sam- ples from an ADC demonstration circuit initiated either by an internal generated trigger or an externally supplied trigger of user-selected polarity. The external trigger is TTL or ...

Page 3

... Choose “View Device QS Guide” from the View menu. To download data sheets (requires an internet connec- tion): Choose “Download Data Sheets” from the Tools menu. All datasheets and Quick Start guides for all products in the QuickEval-II family are downloaded to the QuickEval- II program folder and placed in the dsheets folder ...

Page 4

... Re-install the QuickEval-II Software. CAREFULLY following the on-screen instructions. This MAY require a reboot of your computer. The in-screen instructions will inform you if that is the case the problem persists, please choose “Contact Software Support” from the Tools Menu for assis- tance from the LTC staff. QUICKEVAL-II 4 ...

Page 5

Problem: Demonstration circuit software loads prop- erly, but will not run or gives ”Device Not Accessible” errors. Solution: Verify that the demonstration circuit is properly powered up and that a correct (signal level and frequency) conversion clock is applied. DC718 ...

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