Résumé du contenu de la page N° 1
User’s Guide
December 2001 AAP High-Speed Data Converter (Dallas)
SLAU077
Résumé du contenu de la page N° 2
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the t
Résumé du contenu de la page N° 3
EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product
Résumé du contenu de la page N° 4
EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the specified input and output ranges as described in the EVM user’s guide. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power. Applying loads outside of the specified output range may result in unintended operation and/or possible permanent da
Résumé du contenu de la page N° 5
Information About Cautions and Warnings Preface Read This First About This Manual This user’s guide is to assist the user with the operation of the EVM using the ADS5102/3 devices. How to Use This Manual This document contains the following chapters: Chapter 1—Overview Chapter 2—Physical Description Chapter 3—Circuit Description Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a si
Résumé du contenu de la page N° 6
Contents FCC Warning This equipment is intended for use in a laboratory test environment only. It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to subpart J of part 15 of FCC rules, which are designed to provide reasonable protection against radio frequency interference. Operation of this equipment in other environments may cause interference with radio communications, in which case the user at his own
Résumé du contenu de la page N° 7
Contents Contents 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 EVM Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.3 Power Requirements . . . . . .
Résumé du contenu de la page N° 8
Contents Tables 1–1 Two Pin Jumper List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1–2 Three Pin Jumper List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 2–1 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 3–1 Reference Voltage Adjustment Ranges .
Résumé du contenu de la page N° 9
Chapter 1 Overview This user’s guide gives a general overview of the ADS5102/3 evaluation module (EVM) and provides a general description of the features and functions to be considered while using this module. Topic Page 1.1 Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.2 EVM Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 1.3 Power Requirements . . . . . . . . .
Résumé du contenu de la page N° 10
Purpose 1.1 Purpose The ADS5102/3 EVM provides a platform for evaluating the ADS5102/3 analog-to-digital converter (ADC) under various signal, reference, and supply conditions. Use this document in combination with the EVM schematic diagram supplied. 1.2 EVM Basic Functions Analog input to the ADC is provided via two external SMA connectors. The single-ended input the user provides is converted into a differential signal at the input of the device. One input uses a differential amplifier, while
Résumé du contenu de la page N° 11
ADS5102/3 EVM Operational Procedure 1.4 ADS5102/3 EVM Operational Procedure The ADS5102/3 EVM provides a flexible means of evaluating the ADS5102/3 in a number of modes of operation. A basic setup procedure that can be used as a board confidence check is as follows: 1) Verify all jumper settings against the schematic jumper list in Table 1–1 and Table 1–2: Table 1–1.Two Pin Jumper List Jumper Function Installed Removed Default W10 External REFT feed External Internal Removed W11 External REFB fe
Résumé du contenu de la page N° 12
ADS5102/3 EVM Operational Procedure 3) Switch power supplies on. 4) Use a function generator with 50-Ω output to input a 40-MHz, 1.5-V offset, 3-V amplitude square wave signal into J3 to be used as the ADC clock. (p-p) Note: The frequency of the clock must be within the specification for the device speed grade. 5) Use a function generator with 50-Ω output to input a 1.5-V offset, 3-V (p-p) amplitude square wave signal into J4 to be used as the buffered output clock. Note: This signal must be the
Résumé du contenu de la page N° 13
Chapter 2 Physical Description This chapter describes the physical characteristics and PCB layout of the EVM and lists the components used on the module. Topic Page 2.1 PCB Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2 2.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5 Physical Description 2-1
Résumé du contenu de la page N° 14
PCB Layout 2.1 PCB Layout The EVM is constructed on a 4-layer, 104 mm (4.1 inch) x 114 mm (4.5 inch) x 1,57 mm (0.062 inch) thick PCB using FR–4 material. Figure 2–1 through Figure 2–4 show the individual layers. Figure 2–1. Top Layer 2-2
Résumé du contenu de la page N° 15
PCB Layout Figure 2–2. Inner Layer 1, Ground Plane Physical Description 2-3
Résumé du contenu de la page N° 16
PCB Layout Figure 2–3. Inner Layer 2, Power Plane 2-4
Résumé du contenu de la page N° 17
Bill of Materials Figure 2–4. Bottom Layer 2.2 Bill of Materials Table 2–1 lists the parts used in constructing the EVM. Table 2–1.Bill of Materials Description QTY Part Number MFG. REF DES 47 µ F, tantalum, 10%, 10 V 5 10TPA47M SANYO C72–C76 0.1 µ F,16 V, 10% capacitor 31 ECJ–1VB1C104K Panasonic C12–C37, C62–C66 10 µ F, 10 V, 10% capacitor 9 GRM42X5R106K10 Murata C51–C54, C67–C71 0.01 µ F, 50 V,10% capacitor 4 AVX C47–C49 C60 10 AVX C40–C46, C58, C59, C77 1.0 µ F, 10 V, 10% capacitor 22 pF, 50
Résumé du contenu de la page N° 18
Bill of Materials Table 2–1. Bill of Materials (Continued) Description Qty. Part Number Mfg. Ref. Des. 470 pF,16 V, 10% capacitor 5 C3–C7 2.2 µ F,16 V, 10% capacitor 1 C61 Ferrite bead 5 FB1–FB5 3 ERJ–3EKF499R0V Panasonic R9–R11 499-Ω resistor, 1/16 W, 1% 523-Ω resistor, 1/16 W, 1% 1 ERJ–3EKF523R0V Panasonic R12 49.9-Ω resistor, 1/16 W, 1% 9 ERJ–3EKF49R9V Panasonic R1–R8, R13 1-kΩ resistor, 1/16 W, 1% 2 R21, R22 2.49-kΩ resistor, 1/16 W, 1% 1 R23 475-Ω resistor, 1/16 W, 1% 2 R24, R26 953-Ω resis
Résumé du contenu de la page N° 19
Chapter 3 Circuit Description This chapter describes the circuit function and shows the schematic for the EVM. Topic Page 3.1 Circuit Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 Circuit Description 3-1
Résumé du contenu de la page N° 20
Circuit Function 3.1 Circuit Function The following paragraphs describe the function of the individual circuits. See the data sheet for device operating characteristics. 3.1.1 Analog Inputs The ADC has either transformer-coupled inputs or differential-amplifier inputs from a single-ended source. The inputs are provided via the SMA connectors J1 and J2 on the EVM, which must be configured as follows: For a differential amplifier input to the ADC, a single ended source is connected to J1. R36 an
