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dc1846af

DEMO MANUAL DC1846A

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.

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Summary of Contents for DC1846A

Page 1: ...nology Corporation All other trademarks are the property of their respective owners A DC590 USB serial controller board is used for SPI com munication with the LTC6947 controlled by the supplied FracN...

Page 2: ...the DC590 to one of your computer s USB ports with the included USB cable FracNWizard Installation The FracNWizard software is used to communicate with the LTC6947 synthesizer It uses the DC590 to tr...

Page 3: ...uirements and Characteristics table Be sure to terminate any unused RF output with 50 or poor spurious performance may result 2 Choose the MUTE jumper setting JP1 GND 3 3V MUTE position Select GND to...

Page 4: ...le is required in the loop filter to limit the op amp s noise contribution to the VCO phase noise Selecting Loop Filter Type The DC1846A can use either an active or a passive loop filter depending upo...

Page 5: ...V 22mA 5V VCO Power Supply Input V VCO turret Low noise and spur free 5V 30mA REF Reference Frequency Input J2 SMA connector Low noise 100MHz 6 to 10dBm into 50 see Note RF and RF Two Outputs J6 and J...

Page 6: ...DGE LAUNCH E F JOHNSON 142 0701 851 19 0 J3 J4 CONN SMA 50 Straight OPT 20 4 J9 J10 J11 J12 JACK BANANA KEYSTONE 575 4 21 1 J13 HEADER 7 DUAL PIN 2mm MOLEX 87831 1420 22 0 L1 IND 0402 OPT 23 2 L2 L3 I...

Page 7: ...RINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLO...

Page 8: ...MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FO...

Page 9: ...ogy Corporation is believed to be accurate and reliable However noresponsibilityisassumedforitsuse LinearTechnologyCorporationmakesnorepresenta tion that the interconnection of its circuits as describ...

Page 10: ...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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