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dc1975fa

DEMO MANUAL DC1975A

QUICK START PROCEDURE

DC1975A is easy to set up to evaluate the performance of 

the LTC2270 A/D converter. Refer to Figure 1 for proper 

measurement equipment setup and follow the procedure 

in the Setup section. 

SETUP
The DC890 USB demonstration circuit was supplied with 

the  DC1975  demonstration  circuit.  Follow  the  DC890 

Quick Start Guide to install the required software and for 

connecting the DC890 to the DC1975 and to a PC.

Figure 1. DC1975A Setup

dc1975 F01

SINGLE-ENDED ENCODE 

CLOCK FROM DC1075

DIFFERENTIAL 

ANALOG INPUT

CHANNEL 2

JUMPERS ARE SHOWN 

IN DEFAULT POSITIONS

PARALLEL DATA 

OUTPUT TO DC890

DIFFERENTIAL 

ANALOG INPUT

CHANNEL 1

4.5V TO 6V

+

Содержание LTC2270

Страница 1: ...ta sheet for proper input networks for different input frequencies Design files for this circuit board are available at http www linear com demo PARAMETER CONDITIONS MIN TYP MAX UNITS Supply Voltage D...

Страница 2: ...SETUP The DC890 USB demonstration circuit was supplied with the DC1975 demonstration circuit Follow the DC890 Quick Start Guide to install the required software and for connecting the DC890 to the DC1...

Страница 3: ...nput range of 0 8 VSENSE GND TP2 TP6 TP7 Ground Connection This demo board only has a single ground plane One of these turrets should be tied to the GND terminal of the power supply being used Extra G...

Страница 4: ...to the inputs of the differential driver board to avoid reflections from impedance discontinuities at the driven end of a long transmissionline Most filters do not present 50 outside the passband In...

Страница 5: ...vailable on P1 which could be collected via a logic analyzer or other data collection system if populated with a SAMTEC MEC8 150 type connector or collected by the DC890 QuikEval II data acquisition b...

Страница 6: ...nfiguremenu gotoADCConfiguration Check the Config Manually box and use the following configura tion options see Figure 2 Manual Configuration Settings Bits 16 Alignment 16 FPGA Ld CMOS Channs 2 Bipola...

Страница 7: ...degrees Clock Duty Cycle Enable or disables duty cycle stabilizer n Stabilizer off default Duty cycle stabilizer disabled n Stabilizer on Duty cycle stabilizer enabled Output Current Selects the LVDS...

Страница 8: ...R MURATA GRM21BR61C106KE15L Test Pattern Selects digital output test patterns n Off default ADC data presented at output n All Out 1 All digital outputs are 1 n All Out 0 All digital outputs are 0 n C...

Страница 9: ...S 0603 10k 5 1 10W NIC NRC06J103TRF 25 5 R41 R42 R43 R44 R45 RES 0603 1k 5 1 10W VISHAY CRCW06031K00JNED 26 2 R46 R48 RES 0603 3k 1 1 10W VISHAY CRCW06033K00FKEA 27 1 R47 RES 0603 180k 1 1 10W VISHAY...

Страница 10: ...10 dc1975fa DEMO MANUAL DC1975A SCHEMATIC DIAGRAM Figure 5 2 Channel High Speed Low Power ADC Family LVDS...

Страница 11: ...to be accurate and reliable However noresponsibilityisassumedforitsuse LinearTechnologyCorporationmakesnorepresenta tion that the interconnection of its circuits as described herein will not infringe...

Страница 12: ...DING 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 CONS...

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