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ADS5102/3 EVM December 2001 AAP High-Speed Data Converter (Dallas) User ’ s Guide SLAU077.
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.
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.
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.
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.
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 wit.
Contents vii Contents 1 Overview 1-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 Purpose 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents viii T ables 1 – 1 T wo Pin Jumper List 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 2 Three Pin Jumper List 1-3 . . . . . . . . . . . . . . . . . . . . . . .
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 . . . .
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.
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.
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.
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 . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
PCB Layout 2-3 Physical Description Figure 2 – 2. Inner Layer 1, Ground Plane.
PCB Layout 2-4 Figure 2 – 3. Inner Layer 2, Power Plane.
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.
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.
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 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.
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.
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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.
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