Texas Instruments ADS8402 EVM Manuel d'utilisateur

ADS8402/ADS8412EVMDecember 2003 Data AcquistionUser’s GuideSLAU126

Features1-21.1 Features- Full-featured evaluation board for the high-speed ADS8402 (1.25 MSPS)and the ADS8412 (2 MSPS) high speed, 16-bit, single chan

2-1Analog Interface Analog InterfaceThe ADS8402/ADS8412EVM analog-to-digital converter has a unipolardifferential input. A unipolar differential input

Signal Conditioning2-22.1 Signal ConditioningThe ADS8402/ADS8412EVM comes installed with the unity gain buffer (U2)wired for single-ended in to differ

Reference2-3Analog InterfaceFigure 2-1. Input Buffer Circuit1 kΩ1 kΩ+VCCVI0.1 µF1 µF25 Ω(+) IN(-) IN6800 pF1 µF0.1 µF1 kΩ-VCC-+60 pF1 kΩ60 pFVOCM25 Ω-

2-4

3-1Digital Interface Digital InterfaceThe ADS8402/ADS8412 EVM is designed for easy interfacing to multipleplatforms. Samtec part numbers SSW-110-22-F-

3-2Table 3-2.Jumper Settings for Decoder OutputsReference DesignatorDescriptionJumper SettingsReference Designator Description1-2 2-3W2Set A[2..0] = 0

4-1Power Supply Requirements Power Supply RequirementsThe EVM accepts four power supplies.- A dual ±Vs dc supply for the dual supply op-amps. Recommen

4-2

5-1Using the EVM Using the EVMThe ADS8402/ADS8412EVM serves three functions:1) As a reference design2) As a prototype board3) As a software test platf

IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvemen

As a Reference Board5-25.1 As a Reference BoardAs a reference design, the ADS8402/ADS8412EVM contains the essentialcircuitry to showcase the analog-to

6-1ADS8402/ADS8412EVM BOM, Layout, and Schematic ADS8402/ADS8412EVM BOM, Layout, andSchematicThis chapter contains the ADS8402/ADS8412EVM bill of mate

ADS9393EVM Bill of Materials6-26.1 ADS9393EVM Bill of MaterialsTable 6-1 contains a complete bill of materials for theADS8402/ADS8412EVM. The schemati

ADS9393EVM Bill of Materials6-3ADS8402/ADS8412EVM BOM, Layout, and SchematicItemNo.QTY Value Designator Footprint Mfg Mfg’s Part Number Description22

ADS8402/ADS8412EVM Layout6-46.2 ADS8402/ADS8412EVM LayoutFigure 6-1. Top Layer—Layer 1Figure 1.

ADS8402/ADS8412EVM Layout6-5ADS8402/ADS8412EVM BOM, Layout, and SchematicFigure 6-2. Ground Plane—Layer 2

ADS8402/ADS8412EVM Layout6-6Figure 6-3. Power Plane—Layer 3

ADS8402/ADS8412EVM Layout6-7ADS8402/ADS8412EVM BOM, Layout, and SchematicFigure 6-4. Bottom Layer—Layer 4

ADS8402/ADS8412EVM Schematic6-86.3 ADS8402/ADS8412EVM SchematicThe following pages contain the schematic for the ADS8402/ADS8412EVM.

1 2 3 4 56ABCD654321DCBAti12500 TI Boulevard. Dallas, Texas 75243TITLE:SHEET: OF:FILE: SIZE:REV:Drawn By:Engineer:Revision HistoryREV ECN Number Appr

EVM IMPORTANT NOTICETexas Instruments (TI) provides the enclosed product(s) under the following conditions:This evaluation kit being sold by TI is int

1 2 3 4 5 6ABCD654321DCBAti12500 TI Boulevard. Dallas, Texas 75243TITLE:SHEET: OF:FILE: SIZE:REV:Drawn By:Engineer:Revision HistoryREV ECN Number App

1 2 3 4 56ABCD654321DCBAti12500 TI Boulevard. Dallas, Texas 75243TITLE:SHEET: OF:FILE: SIZE:REV:Drawn By:Engineer:Revision HistoryREV ECN Number Appr

EVM WARNINGS AND RESTRICTIONSIt is important to operate this EVM within the input voltage range of ±6 V and the output voltagerange of 0 V and 5.5 V.E

Related Documentation From Texas Instrumentsiii PrefaceRead This FirstAbout This ManualThis users guide describes the characteristics, operation, and

ContentsivFCC WarningThis equipment is intended for use in a laboratory test environment only. It gen-erates, uses, and can radiate radio frequency en

Contentsv Contents1 EVM Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ContentsviFigures1-1 Input Buffer Circuit 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1EVM Overview EVM OverviewThis chapter contains the features of the ADS8402/ADS8412.Topic Page1.1 Features 1-2. . . . . . . . . . . . . . . . . . .