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dc2071afc

DEMO MANUAL DC2071A

DC2071A SETUP

Figure 2. 0V to 4.096V Fully Differential AC/DC Coupled Driver

BNC

C77

10µF

6.3V

R94

C79

OPT

1206

C74

10µF

6.3V

CM2

R91

OPT

R97

OPT

JP6

+IN1

COUPLING

AC DC

3 2 1

A

IN1

+

0V TO

4.096V

J2

BNC

C91

10µF

6.3V

R109

C92

OPT

1206

C89

10µF

6.3V

CM2

R106

OPT

R110

OPT

JP8

–IN1

COUPLING

AC DC

3 2 1

A

IN1

0V TO

4.096V

J3

R95

24.9Ω

R101

24.9Ω

C84

OPT

C80

15pF

C90

15pF

R108

OPT

R107

24.9Ω

V–

C86

OPT

R104

24.9Ω

R105

10Ω

R96

10Ω

R137

OPT

R92

OPT

V+

C82

0.1µF

+

CH0

CH1

+

C75

0.1µF

4

2

3

8

8

7

1

5

6

4

LT6237

U24B

U24A

LT6237

Figure 3. ±8.192V Single-Ended to Differential DC Coupled Driver

BNC

R112

R116

20K

R120

4.99K

R134

20Ω

R113

R121

C96

OPT

A

IN2

±8.192V

J4

R1

LT5400-4

1

2

3

4

8

7

6

5

R2

R3

R132, 20Ω

R133, 20Ω

R4

EP

+

LT1469

U25B

U25A

CH2

VCM

CH3

C105

0.01µF

C0G

8

3

2

1

OP AMP–

OP AMP+

C93

10µF

25V

0805

C98

10µF

25V

0805

C99

10µF

6.3V

4

+

8

5

6

7

9

4

LT1469

R125

20K

R126

10K

C102

0.01µF

C0G

R135

20Ω

C106

0.01µF

C0G

Summary of Contents for DC2071A

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

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