National Semiconductor ADC12V170 Скачать руководство пользователя | Manualshive

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www.national.com

Rev 0.0

October 2007

Evaluation Board User’s Guide for

ADC12V170: 12-Bit, 170 MSPS Analog to Digital Converter

with LVDS Outputs

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Содержание ADC12V170

Страница 1: ...N www national com Rev 0 0 October 2007 Evaluation Board User s Guide for ADC12V170 12 Bit 170 MSPS Analog to Digital Converter with LVDS Outputs ...

Страница 2: ... 0 0 Figure 1 ADC12V170 Evaluation Board Connector and Jumper Locations Analog Input FIN 150 MHz Single Ended Clock Input 5 0V Power Connector ADC CLK_SEL DF Jumper PD Jumper Clock Buffer Reverse Side Analog Input Network Analog Input FIN 150 MHz FutureBus Connector ...

Страница 3: ...quencies greater than 150 MHz 2 ADC12V170LFEB low frequency version for input frequencies less than 150 MHz Please refer to the input circuit configurations described in the Analog Input Section 4 2 of this guide The location and description of the components on the ADC12V170 evaluation board can be found in Figure 1 as well as Section 5 0 Schematic and Section 7 0 Bill of Materials of this user s...

Страница 4: ...urther improve the noise performance of the ADC by filtering out the broadband noise of the clock source All results in the ADC12V170 datasheet are obtained with a tunable bandpass filter made by Trilithic Inc in the clock signal path The noise performance of the ADC12V170 can be improved further by making the edge transitions of the clock signal entering the ADC clock input pin 11 CLK very sharp ...

Страница 5: ...the ADC12V170 to provide the 1 5V common mode voltage required for the differential analog inputs VIN and VIN The ADC12V170 evaluation board is factory assembled with VRM connected to the transformer center tap through a 49 9Ω resistor to provide the necessary common mode voltage to the differential analog input 4 4 Board Outputs The digitized 12 bit output word from the ADC12V170 evaluation board...

Страница 6: ... the first half of the clock period and these lines will carry bit D10 during the second half of the clock period Similarly pins A10 B10 will carry D1 during the first half of the clock period and these pins will carry D0 during the second half of the clock period The DRDY signal which is used to capture the data is also in LVDS format and it is available at pins A4 D4 DRDY on the FutureBus connec...

Страница 7: ...ADC12V170 Evaluation Board User s Guide N 7 www national com Rev 0 0 5 0 Evaluation Board Schematic Figure 4 Signals ...

Страница 8: ...ADC12V170 Evaluation Board User s Guide N 8 www national com Rev 0 0 5 0 Schematic cont Figure 5 Power Distribution ...

Страница 9: ...ADC12V170 Evaluation Board User s Guide N 9 www national com Rev 0 0 6 0 Evaluation Board Layout Figure 6 Layer 1 Signal ...

Страница 10: ...ADC12V170 Evaluation Board User s Guide N 10 www national com Rev 0 0 6 0 Evaluation Board Layout cont Figure 7 Layer 2 Ground ...

Страница 11: ...ADC12V170 Evaluation Board User s Guide N 11 www national com Rev 0 0 6 0 Evaluation Board Layout cont Figure 8 Layer 3 Power ...

Страница 12: ...ADC12V170 Evaluation Board User s Guide N 12 www national com Rev 0 0 6 0 Evaluation Board Layout cont Figure 9 Layer 4 Signal ...

Страница 13: ...c_7343 Kemet 15 2 L1 L2 Ferrite Bead Core SMD FERRITE BEAD CORE 4 5X3 2X1 8 Panasonic ECG 16 1 JTAG Jumper 1x8 JUMPER BLOCK USING 8 PIN SIP HEADER Samtec 17 1 PD Jumper 2X2 2X2 JUMPER BLOCK HEADER CUT TO SIZE FROM 2X6 HEADER Samtec 18 1 CLK_SEL DF Jumper 2X4 2X4 JUMPER BLOCK HEADER CUT TO SIZE FROM 2X6 HEADER Samtec 19 1 Shunt PLACE SHUNT ACROSS PINS 7 8 ON CLK_SEL DF JUMPER FCI Electronic 20 1 U1...

Страница 14: ...ANTALUM 6 3V 10 sm c_7343 Kemet 15 2 L1 L2 Ferrite Bead Core SMD FERRITE BEAD CORE 4 5X3 2X1 8 Panasonic ECG 16 1 JTAG Jumper 1x8 JUMPER BLOCK USING 8 PIN SIP HEADER Samtec 17 1 PD Jumper 2X2 2X2 JUMPER BLOCK HEADER CUT TO SIZE FROM 2X6 HEADER Samtec 18 1 CLK_SEL DF Jumper 2X4 2X4 JUMPER BLOCK HEADER CUT TO SIZE FROM 2X6 HEADER Samtec 19 1 Shunt PLACE SHUNT ACROSS PINS 7 8 ON CLK_SEL DF JUMPER FCI...

Страница 15: ...tain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury to the user 2 A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its sa...

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