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dc1281af

DEMO MANUAL DC1281A

QUICK START PROCEDURE

Figure 1. DC1281A Setup (Zoom for Detail)

Demonstration circuit 1281A is easy to set up to evaluate 
the performance of the LTC2209 A/D converters. Refer to 
Figure 1 for proper measurement equipment setup and 
follow the procedure below: 

Setup

If a DC890 QuikEval™ II Data Acquisition and Collection 
System was supplied with the DC1281A demonstration 
circuit, follow the DC890 Quick Start Guide to install the 
required software and for connecting the DC890 to the 
DC1281A and to a PC.

DC1281A Demonstration Circuit Board Jumpers

The DC1281A demonstration circuit board should have 
the following jumper settings as default: (as per Figure 1):

  J2: Mode (VCC) 2’s Complement DCS Off

  J3: SHDN: (Run) Dither (Off)

  J4: RAND (Off) PGA 1x

  J9: Unused Power Connector

3.6V OR 3.3V

RAND

MODE

PGA

DITHER

ENCODE CLOCK

SHDN

ANALOG

INPUT

Содержание DC1281A

Страница 1: ...com demo TA 25 C Table 1 DC1281A Variants DC1281A VARIANTS ADC PART NUMBER RESOLUTION MAXIMUM SAMPLE RATE INPUT FREQUENCY SUPPLY VOLTAGE 1281A A LTC2209 16 Bit 160Msps 1MHz to 80MHz 3 3V 1281A B LTC2209 16 Bit 160Msps 80MHz to 160MHz 3 3V 1281A E LTC2209 3BCPBF 16 Bit 180Msps 1MHz to 80MHz 3 6V 1281A F LTC2209 3BCPBF 16 Bit 180Msps 80MHz to 160MHz 3 6V 1281A G LTC2209 3CDPBF 16 Bit 185Msps 1MHz to...

Страница 2: ...sition and Collection System was supplied with the DC1281A demonstration circuit follow the DC890 Quick Start Guide to install the required software and for connecting the DC890 to the DC1281A and to a PC DC1281A Demonstration Circuit Board Jumpers The DC1281A demonstration circuit board should have the following jumper settings as default as per Figure 1 J2 Mode VCC 2 s Complement DCS Off J3 SHDN...

Страница 3: ...ed prior to this final amplifier and a relatively lower Q filter used between the amplifier and the demo circuit Encode Clock Note Thisisnotalogic compatibleinput Itisterminated with 50Ω Apply an encode clock to the SMA connector on the DC1281A demonstration circuit board marked J7 ENCODE INPUT This is a transformer coupled input terminated on the secondary side in two steps 100Ω at the transforme...

Страница 4: ... in the DC890 Quick Start Guide and in the online help available within the PScope program itself Figure 2 ADC Configuration PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER PART NUMBER 1 5 C1 C3 C6 C7 CAP X7R 0 01μF 16V 10 0603 AVX 0603YC103KAT 2 2 C13 C17 CAP X5R 2 2μF 10V 20 0805 AVX 0805ZD225MAT 3 3 C14 C24 C38 CAP X5R 4 7μF 10V 20 0805 AVX 0805ZD475MAT 4 15 C15 C16 C20 C22 C25 C32 ...

Страница 5: ...5 BUFFER LVDS SINGLE FAIRCHILD FIN1101K8X 29 4 Z STAND OFF STAND OFF NYLON 0 25 tall KEYSTONE 8831 SNAP ON 30 5 SHUNT 0 079 CENTER SAMTEC 2SN BK G 31 2 STENCIL 20 20 STENCIL 1281A 20 20 32 1 FAB PCB DEMO CIRCUIT 1281A DC1281A A 1 1 DC1281A GENERAL BOM 2 1 C8 CAP NPO 4 7pF 50V 0 25pF 0402 AVX 04025A4R7CAT2A 3 2 C9 C10 CAP NPO 8 2pF 50V 0 25pF 0402 AVX 04025A8R2CAT2A 4 1 L1 IND 56nH 5 0603 MURATA LQ...

Страница 6: ...D 7 1 T1 BALUN RF SMT 1 1 M A COM MABA 007159 000000 PbF 8 1 T2 TRANSFORMER WBC1 1L Coilcraft WBC1 1L 9 1 U2 ADC 16 BIT 180MSPS LINEAR LTC2209CUP 3BCPBF DC1281A G 1 1 DC1281A GENERAL BOM 2 1 C8 CAP NPO 4 7pF 50V 0 25pF 0402 AVX 04025A4R7CAT2A 3 2 C9 10 CAP NPO 8 2pF 50V 0 25pF 0402 AVX 04025A8R2CAT2A 4 1 L1 IND 56nH 5 0603 MURATA LQP18MN56NG02D 5 2 R36 R44 RES 86 6Ω 1 1 16W 0603 VISHAY CRCW060386R...

Страница 7: ...orporation 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 SCHEMATIC DIAGRAM ...

Страница 8: ...UDING 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 goo...

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