background image

8

dc1485af

DEMO MANUAL DC1485A

ASSEMBLY DRAWINGS

Содержание DC1485A

Страница 1: ...t allows all of the LTC2757 s features to be exercised including system level gain and offset adjustments L LT LTC LTM Linear Technology and the Linear logo are registered trademarks and SoftSpan is a trademark of Linear Technology Corporation All other trademarks are the property of their respective owners Design files for this circuit board are available at http www linear com demo DAC CONNECTION...

Страница 2: ...Run the evaluation software supplied with DC590ordownloaditfromwww linear com software The correct control panel will be loaded automatically The softwareautomaticallysetstheLTC2757outputsaccording to the entries in the control panel A square wave option is available to test settling time MSPAN jumper should be in the lower position if software span control is desired Additional software documenta...

Страница 3: ...he MSB D0 is the LSB S0 S2 Span Input Output Pins S0 S1 and S2 are used to program and to read back the output range of the DAC _D S Data Span Select This pin is used to select acti vation of the data or span I O pins D0 to D17 or S0 to S2 respectively along with their respective dedicated registers for write or read operations Update operations ignore _D S since all updates affect both data and s...

Страница 4: ...dLT1236reference recommended SettoREG to be supplied by regulated supply from DC590 Controller and remove the jumper to supply externally Analog Connections Turret Posts VOUT DAC Voltage Output VREF DACReferenceVoltage IftheonboardLT1236refer ences are selected the voltage may be measured at these points If a remote reference is selected then an external reference must be applied to these points V...

Страница 5: ...NEA 350 19 3 R7 R8 R3 RES Chip 1k 1 16W 5 0603 VISHAY CRCW06031K00JNEA 525 20 6 R4 R9 R20 R21 R22 R23 RES Chip 100Ω 1 16W 5 0402 VISHAY CRCW0402100RJNED 1050 21 1 R5 RES Chip 10Ω 1 16W 5 0603 VISHAY CRCW060310R0JNEA 175 22 1 R6 RES Chip 4 02k 1 16W 1 0603 VISHAY CRCW06024K02FKED 175 23 8 R11 R16 R17 R18 R19 R27 R29 R30 RES Chip 4 99k 1 16W 1 0402 VISHAY CRCW04024K99FKED 1400 24 4 R24 R25 R26 R31 R...

Страница 6: ... QF QG QH Q H U6 LTC6655AHMS8 5 1 2 3 4 5 6 7 8 SHDN VIN GND GND GND VOUT_S VOUT_F GND JP5 EXT GND 1 3 2 E9 RVOS U10 74VHC595MTC 10 8 14 11 12 16 13 15 1 2 3 4 5 6 7 9 SCLR GND SER SCK RCK VCC G QA QB QC QD QE QF QG QH Q H R9 100 R6 4 02K 0603 C2 0 1uF C23 100pF R27 4 99K C17 100pF U9 74VHC595MTC 10 8 14 11 12 16 13 15 1 2 3 4 5 6 7 9 SCLR GND SER SCK RCK VCC G QA QB QC QD QE QF QG QH Q H R2 10K 0...

Страница 7: ...7 dc1485af DEMO MANUAL DC1485A ASSEMBLY DRAWINGS ...

Страница 8: ...8 dc1485af DEMO MANUAL DC1485A ASSEMBLY DRAWINGS ...

Страница 9: ...9 dc1485af DEMO MANUAL DC1485A PCB LAYOUT AND FILM Top Silkscreen Top Solder Paste Top Solder Mask ...

Страница 10: ...10 dc1485af DEMO MANUAL DC1485A PCB LAYOUT AND FILM Layer 1 Top Layer Layer 2 GND Plane 1 Layer 3 GND Plane 2 PWR Traces ...

Страница 11: ...11 dc1485af DEMO MANUAL DC1485A PCB LAYOUT AND FILM Layer 4 Bottom Layer Bottom Solder Mask ...

Страница 12: ...12 dc1485af DEMO MANUAL DC1485A PCB LAYOUT AND FILM Bottom Solder Paste Bottom Silkscreen ...

Страница 13: ...nology Corporation is believed to be accurate and reliable However noresponsibilityisassumedforitsuse LinearTechnologyCorporationmakesnorepresentation that the interconnection of its circuits as described herein will not infringe on existing patent rights PC FAB DRAWING ...

Страница 14: ...LUDING 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 CONSEQUENTIAL DAMAGES The user assumes all responsibility and liability for proper and safe handling of the goods Further the user releases LTC from all claims arising from the handling or use of the go...

Отзывы: