background image

3

dc2071afc

DEMO MANUAL DC2071A

DC890 QUICK START PROCEDURE

Check to make sure that all switches and jumpers are 

set as shown in the connection diagram of Figure 1. The 

default connections configure the ADC to use the onboard 

reference and regulators to generate the required common 

mode voltages. The analog input is DC coupled. Connect 

the DC2071A to a DC890 USB High Speed Data Collec-

tion Board using connector P1. Then, connect the DC890 

to a host PC with a standard USB A/B cable. Apply ±16V 

to the indicated terminals. Then apply a low jitter signal 

source to J2–J7. Observe the recommended input voltage 

range for each analog input. Connect a low jitter 2.5V

PP 

sine wave or square wave to connector J1. See Table 1 

for the appropriate clock frequency. Note that J1 has a 

50Ω termination resistor to ground.

Run the PScope™ software (Pscope.exe version K88 or 

later) which can be downloaded from 

www.linear.com/

designtools/software

.

Complete software documentation is available from the 

Help menu. Updates can be downloaded from the Tools 

menu.  Check  for  updates  periodically  as  new  features 

may be added.
The PScope software should recognize the DC2071A and 

configure itself automatically. 
Click the Collect button (See Figure 7) to begin acquiring 

data. The Collect button then changes to Pause, which 

can be clicked to stop data acquisition.

DC590 QUICK START PROCEDURE

IMPORTANT!  To  avoid  damage  to  the  DC2071A, 

make sure that VCCIO (JP6) of the DC590 is set to 

3.3V before connecting the DC590 to the DC2071A.

To use the DC590 with the DC2071A, it is necessary to 

apply ±16V and ground to the ±16V and GND terminals 

on the DC2071A. Connect the DC590 to a host PC with a 

standard USB A/B cable. Connect the DC2071A to a DC590 

USB  serial  controller  using  the  supplied 14-conductor 

ribbon cable. Apply a signal source to J2-J7. No clock 

is required on J1 when using the DC590. The clock is 

provided by the DC590.
Run the QuikEval™ software (quikeval.exe version K109 

or later) which is available from 

www.linear.com/design-

tools/software

. The correct control panel will be loaded 

automatically. Click the Collect button (Figure 10) to begin 

reading the ADC.

Содержание DC2071A

Страница 1: ...echnology 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 perform...

Страница 2: ...fc DEMO MANUAL DC2071A BOARD PHOTO Figure 1 DC2071A Connection Diagram 0V TO 4 096V 0V TO 4 096V 8 192V 0V TO 4 096V 4 096V 4 096V 16V GND 16V CLK 100MHz MAX 3 3VPP DC890 DC590 OR DC2026 DEFAULT INPUT...

Страница 3: ...s available from the Help menu Updates can be downloaded from the Tools menu Check for updates periodically as new features may be added The PScope software should recognize the DC2071A and configure...

Страница 4: ...an external reference voltage is desired the LTC6655 4 096 reference U9 can be used by setting the REF jumper JP1 to the EXT position and installing a 0 resistor in the R19 position Analog Inputs The...

Страница 5: ...24 9 C84 OPT C80 15pF C90 15pF R108 OPT R107 24 9 V C86 OPT R104 24 9 R105 10 R96 10 R137 OPT R92 OPT V C82 0 1 F CH0 CH1 C75 0 1 F 4 2 3 8 8 7 1 5 6 4 LT6237 U24B U24A LT6237 Figure 3 8 192V Single E...

Страница 6: ...F C87 10 F 6 3V V 4 5 1 8 2 6 3 7 V R98 0 R103 10 U27 IN1 IN2 CH5 CH4 V V OUT1 OUT2 SHDN IN1 LT6350 Figure 5 Single Ended Fully Differential Input to Fully Differential DC Coupled Driver SHDN V V VOC...

Страница 7: ...CH6 CH7 CNV SCK SDI SDO BUSY RESET RDL V DD VDDLBYP OVDD REFBUF REFIN MUXOUT ADCIN MUXOUT ADCIN 29 28 25 12 13 GND GND GND GND GND OGND GND GND 27 17 15 14 11 26 23 33 31 32 1 2 7 8 9 10 30 16 21 20...

Страница 8: ...8 data sheet This involves using a 62MHz clock source along with a sinusoidal generator at a frequency of approximately 1kHz The input signal level is approximately 1dBFS A typical FFT obtained with D...

Страница 9: ...an input frequency that is a sub multiple of the sample rate and which will only exercise a small subset of the possible output codes The proper method is to pick an M N frequency for the input sine w...

Страница 10: ...e ADC on theDC2071Ashouldbeusedasaguidelineforplacement and routing of the various components associated with the ADC Here are some things to remember when lay ing out a board for the LTC2373 18 A gro...

Страница 11: ...mmon mode voltage for the ADC Choices are EXT 2 5V 2 048V or GND The default set ting is 2 048V JP3 VCCIO sets the output levels at J2 to either 3 3V or 2 5V Use 2 5V to interface to the DC890 which i...

Страница 12: ...NCLUDING 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...

Отзывы: