Texas Instruments ADS5102 EVM manual

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Table of contents for the manual

  • Page 1

    ADS5102/3 EVM December 2001 AAP High-Speed Data Converter (Dallas) User ’ s Guide SLAU077[...]

  • Page 2

    IMPORT ANT NOTICE T exas 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 orde[...]

  • Page 3

    EVM IMPORT ANT NOTICE T exas 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 EV ALUA TION PURPOSES ONL Y 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[...]

  • Page 4

    EVM W ARNINGS 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 representativ[...]

  • Page 5

    Information About Cautions and Warnings v 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 Descrip[...]

  • Page 6

    Contents vi 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 fre[...]

  • Page 7

    Contents vii Contents 1 Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Purpose 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 EVM Basic Funct[...]

  • Page 8

    Contents viii T ables 1 – 1 T wo Pin Jumper List 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 2 Three Pin Jumper List 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1 Bill of Materials 2-5[...]

  • Page 9

    1-1 Overview 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. T opic Page 1.1 Purpose 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

  • Page 10

    Purpose 1-2 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. Th[...]

  • Page 11

    ADS5102/3 EVM Operational Procedure 1-3 Overview 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) V erify all jumper settings against the schematic jumper list in T [...]

  • Page 12

    ADS5102/3 EVM Operational Procedure 1-4 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 (p-p) amplitude square wave signal into J3 to be used as the ADC clock. Note: The frequency of the clock must be within the specification for the device speed grade. 5) Use a function generator wi[...]

  • Page 13

    2-1 Physical Description Physical Description This chapter describes the physical characteristics and PCB layout of the EVM and lists the components used on the module. T opic Page 2.1 PCB Layout 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 Bill of Materials 2-5 . . . . . . . . . . . . [...]

  • Page 14

    PCB Layout 2-2 2.1 PCB Layout The EVM is constructed on a 4-layer , 104 mm (4.1 inch) x 1 14 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. T op Layer[...]

  • Page 15

    PCB Layout 2-3 Physical Description Figure 2 – 2. Inner Layer 1, Ground Plane[...]

  • Page 16

    PCB Layout 2-4 Figure 2 – 3. Inner Layer 2, Power Plane[...]

  • Page 17

    Bill of Materials 2-5 Physical Description Figure 2 – 4. Bottom Layer 2.2 Bill of Materials T able 2 – 1 lists the parts used in constructing the EVM. T able 2 – 1. Bill of Materials Description QTY Part Number MFG. REF DES 47 µ F , tantalum, 10%, 10 V 5 10TP A47M SANYO C72 – C76 0.1 µ F ,16 V , 10% capacitor 31 ECJ – 1VB1C104K Panasoni[...]

  • Page 18

    Bill of Materials 2-6 T able 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 499- Ω resistor , 1/16 W , 1% 3 ERJ – 3EKF499R0V Panasonic R9 – R1 1 523- Ω resistor , 1/16 W , 1% 1 ERJ – 3EKF523R0V Pana[...]

  • Page 19

    3-1 Circuit Description Circuit Description This chapter describes the circuit function and shows the schematic for the EVM. T opic Page 3.1 Circuit Function 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.2 Schematic Diagram 3-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 20

    Circuit Function 3-2 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[...]

  • Page 21

    The following paragraphs describe the function of the individual circuits. See the data sheet for device operating characteristics. 3-3 Circuit Description 3.1.3 Clock Inputs The EVM provides separate inputs for the ADC clock and output buffer clock. This allows the user to send a modified version of the ADC clock (inverted, delayed, etc.) with the[...]

  • Page 22

    Schematic Diagram 3-4 T able 3 – 2. Output Connector J15 J15 Pin Description J15 Pin Description 1 NC 21 Data Bit 6 2 GND 22 GND 3 Output clock 23 Data Bit 5 4 GND 24 GND 5 NC 25 Data Bit 4 6 GND 26 GND 7 NC 27 Data Bit 3 8 GND 28 GND 9 NC 29 Data Bit 2 10 GND 30 GND 11 NC 31 Data Bit 1 12 GND 32 GND 13 NC 33 Data Bit 0 (MSB) 14 GND 34 GND 15 Dat[...]

  • Page 23

    1234 56 A B C D 6 5 4 3 2 1 D C B A  12500 TI Boulev ard. Dall as, T ex as 75243 Ti tl e: SHEET: OF: FILE : SIZE: DA TE: REV : 5-Dec-2001 Drawn By : Engineer: Revi si o n His tor y REV ECN Number A pproved Sh eet1 _Rev A.S ch DOCUM ENTCONT RO L # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RP1 100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 RP2 100 C40[...]

  • Page 24

    1234 56 A B C D 6 5 4 3 2 1 D C B A FILE : Drawn By : Engineer:  12500 TI Boulev ard. Dall as, T ex as 75243 Ti tl e: SHEET: OF: SIZE: DA TE: REV : 5-Dec-2001 DOCUM ENTCONT RO L # ADS 5102 A 24 C77 1 uF C61 2. 2 uF +5V A R23 2. 49K R22 1K R21 1K 1 2 3 R27 1k R18 10K C24 0. 1 uF R30 100 C25 0. 1 uF C6 470 pF C55 0. 047 uF C27 0. 1 uF +5V A R5 [...]

  • Page 25

    1234 56 A B C D 6 5 4 3 2 1 D C B A FILE : Drawn By : Engineer:  12500 TI Boulev ard. Dall as, T ex as 75243 Ti tl e: SHEET: OF: SIZE: DA TE: REV : 5-Dec-2001 DOCUM ENTCONT RO L # C29 0. 1 uF AVDD ADC Analog Su ppl y (+1.8V) C31 0. 1 uF DVDD ADC D igital Su ppl y (+ 1. 8V) C33 0. 1 uF DRV DD ADC D riv er Su ppl y (+1.8V/3. 3v ) C30 0. 1 uF +5[...]

  • Page 26

    1234 56 A B C D 6 5 4 3 2 1 D C B A FILE : Drawn By : Engineer:  12500 TI Boulev ard. Dall as, T ex as 75243 Ti tl e: SHEET: OF: SIZE: DA TE: REV : 5-Dec-2001 DOCUM ENTCONT RO L # /OE1 1 1Y 1 2 1Y 2 3 1Y 3 5 1Y 4 6 2A1 41 2A2 40 2A3 38 2A4 37 1A1 47 1A2 46 1A3 44 1A4 43 2Y 1 8 2Y 2 9 2Y 3 11 2Y 4 12 VCC 7 GND 4 /OE2 48 /OE3 25 /OE4 24 3A1 36 [...]