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A

B

C

A1

A0

A2

Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7

RESET

RD

CONVST

1

1

1

W1

W2

W3

SN74AHC138

G

DC_CS

5

Related Documentation From Texas Instruments

Related Documentation From Texas Instruments

Figure 2. Decoding Control Signals Using the Address Bus

To obtain a copy of any of the following TI documents, call the Texas Instruments Literature Response
Center at (800) 477-8924 or the Product Information Center (PIC) at (972) 644-5580. When ordering,
identify this booklet by its title and literature number. Updated documents can also be obtained through
our website at www.ti.com.

Data Sheets

Literature Number:

ADS8401

ADS8405

ADS8411

THS4031

OPA627

SBOS165

REF3040

SN74AHC138

SN74AHC245

ADS8401/ADS8405/ADS8411EVM User's Guide

SLAU114A – December 2004

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Содержание ADS8401EVM

Страница 1: ...S8405EVM ADS8411EVM BOM 8 Appendix B ADS8401 ADS8405 ADS8411EVM Layout 10 Appendix C ADS8401 ADS8405 ADS8411EVM Schematic 14 List of Figures 1 ADS8411 Input Buffer Circuit 3 2 Decoding Control Signals...

Страница 2: ...P1 20 REF External reference input 1 All odd numbered pins of P1 are tied to AGND The factory recommends the analog input to any SAR type converter be buffered and low pass filtered This input buffer...

Страница 3: ...three reference sources via solder jumper pads SJP1 SJP2 and SJP3 Set SJP1 SJP2 and SJP3 to select from the three reference voltage sources See Table 2 for jumper settings See Appendix C for the full...

Страница 4: ...or memory See Table 4 for jumper settings Note that the evaluation module does not allow the chip select CS line of the converter to be assigned to different memory locations It is therefore suggested...

Страница 5: ...d pin active low J3 5 CONVST Convert start pin active low J3 7 BYTE BYTE mode pin used for 8 bit buses J3 9 RESET Reset pin active low J3 11 BUSY Converter status output High when a conversion is in p...

Страница 6: ...require signal supply operation and smaller input voltage range the THS4031 can be replaced with the single supply amplifier like OPA300 or OPA355 Pad jumper SJP7 should be shorted between pads 1 and...

Страница 7: ...ts call the Texas Instruments Literature Response Center at 800 477 8924 or the Product Information Center PIC at 972 644 5580 When ordering identify this booklet by its title and literature number Up...

Страница 8: ...1 k R6 R10 Panasonic ECG or ERJ 6ENF1001V Resistor 1 k 1 10 W 1 0805 SMD alternate 11 5 10 k R16 R17 R18 Panasonic ECG or ERJ 3EKF1002V Resistor 10 k 1 16 W 1 0603 SMD R19 R20 alternate 12 4 1 nF C3...

Страница 9: ...16 bit 1 25 MSPS ADS8411 U4 1 Texas Instruments ADS8411IPFBT ADS8411 16 bit 2 MSPS 36 3 SN74AHC245PWR U5 U6 U7 Texas Instruments SN74AHC245PWR Octal bus transceiver 3 state 37 1 SN74AHC138PWR U8 Texa...

Страница 10: ...www ti com Appendix B ADS8401 ADS8405 ADS8411EVM Layout Appendix B Figure B 1 Toplayer Layer 1 ADS8401 ADS8405 ADS8411EVM Layout 10 SLAU114A December 2004...

Страница 11: ...www ti com Appendix B Figure B 2 Ground Plane Layer 2 ADS8401 ADS8405 ADS8411EVM Layout SLAU114A December 2004 11...

Страница 12: ...www ti com Appendix B Figure B 3 Power Plane Layer 3 ADS8401 ADS8405 ADS8411EVM Layout 12 SLAU114A December 2004...

Страница 13: ...www ti com Appendix B Figure B 4 Bottom Layer Layer 4 ADS8401 ADS8405 ADS8411EVM Layout SLAU114A December 2004 13...

Страница 14: ...Appendix C ADS8401 ADS8405 ADS8411EVM Schematic Appendix C The following pages contain the schematics for the ADS8401EVM ADS8405EVM and ADS8411EVM ADS8401 ADS8405 ADS8411EVM Schematic 14 SLAU114A Dec...

Страница 15: ...P1 VA VA B_DB 15 0 DB 15 0 CS RD CONVST BYTE RESET B_BUSY BUSY B_CS B_RD B_CONVST B_BYTE B_RESET AVCC VA VA BVDD A0 A1 A2 DC_CS Power Digital Buffer J2 B_DB 15 0 DB 15 0 B_DB0 B_DB1 B_DB2 B_DB3 B_DB4...

Страница 16: ...C35 NI C33 0 22uF R5 NI EXT_REF R4 200 DB 15 0 R11 NI TP4 3 1 2 SJP2 1 2 SJP3 R6 1000 C49 10uF REFIN 1 REFOUT 2 NC 3 VA 4 AGND 5 IN 6 IN 7 AGND 8 VA 9 VA 10 AGND 11 AGND 12 AGND 14 AGND 15 DB15 16 DB1...

Страница 17: ...uF B_RD 1 16 2 15 3 14 4 13 5 9 12 6 8 10 11 7 RP3 1K VBD OE DIR A1 A2 A3 A4 A5 A6 A7 A8 B1 B2 B3 B4 B5 B6 B7 B8 VCC GND U7 SN74AHC245PWR C58 0 1uF B_RD DB 17 0 DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 D...

Страница 18: ...OVE NEITHER PARTY SHALL BE Liable to the other FOR ANY INDIRECT SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES TI currently deals with a variety of customers for products and therefore our arrangement wi...

Страница 19: ...ute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual pro...

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