Texas Instruments ADS5525 - Manual

1 Overview 1.1 EVM Basic Functions User's Guide SLWU028B – January 2006 – Revised November 2006 This manual assists users in using the ADS5525/27/45/46/47 evaluation module (EVM) for evaluating theperformance of the ADS5525/27/45/46/47 (ADCs). The EVM provides a powerful and robust capability ineval...

www.ti.com 2 EVM Quick Start Guide 2.1 EVM LVDS Output Mode Quick Start (Default) 2.2 EVM CMOS Output Mode Quick Start EVM Quick Start Guide The ADC has two basic modes of output operation, ensuring compatibility in a broad range of systems.Follow the steps below to get the EVM operating quickly wit...

www.ti.com 3 Circuit Description 3.1 Schematic Diagram 3.2 Circuit Function 3.2.1 Configuration Options 3.2.2 Power Circuit Description The schematic diagram for the EVM is in Section 5.3 of this document. The following paragraphs describe the function of individual circuits. See the data sheet for ...

www.ti.com f IN − Input Frequency − MHz SNR − Signal-to-Noise Ratio − dBFS G001 9.97 19.94 30.13 40.33 50.13 60.13 69.59 79.87 89.75 100.33 130.13 170.13 68 69 70 71 72 73 74 1 Decoupling Cap Baseline-All Decoupling Caps 3.2.3 Analog Inputs Circuit Description Table 2. EVM Power Options BANANA JACK ...

www.ti.com 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 f − Frequency − MHz Amplitude − dBFS G002 1 −135 −120 10 −130 −110 −100 −90 −80 −70 −60 −50 −40 −30 −20 −10 0 2 3 4 5 x 3.2.4 Clock Input 3.2.5 Digital Outputs Circuit Description The schematics present various interface options between ...

www.ti.com Circuit Description Table 3. Output Connector J4 J4 PIN ADS5525/27 DESCRIPTION ADS5545/46/47 DESCRIPTION 1 CLK CLK 2 GND GND 3 NC NC 4 GND GND 5 Reserved Reserved 6 GND GND 7 Reserved Reserved 8 GND GND 9 NC Data bit 0 (LSB) 10 GND GND 11 NC Data bit 1 12 GND GND 13 Data bit 0 (LSB) Data ...

www.ti.com C001 3.2.6 Test Points Circuit Description Figure 3. Eye Diagram of Data on Header J4. For added EVM visibility and control, several test points are provided. Table 4 summarizes the test points available. SLWU028B – January 2006 – Revised November 2006 11 Submit Documentation Feedback

www.ti.com 3.2.7 LED Operation Circuit Description Table 4. Test Points TP DESCRIPTION TP1 ADC common mode, input or outputdepending on the setting of SW1, switch 4 TP3 THS4509 power down TP4 ADC output enable TP5 AGND TP6 AGND TP7 AGND TP8 DGND TP9 FPGA M0 pin; determines which FPGA logicfile to lo...

www.ti.com 4 Expansion Options 4.1 Custom FPGA Code 4.2 Expansion Slot 4.3 Optional USB SPI Interface Expansion Options The EVM offers several exciting possibilities to expand the capabilities of the EVM. This allows the utmostflexibility when prototyping an ADC circuit under conditions that mimic t...

www.ti.com 5 Physical Description 5.1 PCB Layout K001 Physical Description This chapter describes the physical characteristics and PCB layout of the EVM. The EVM is constructed on a 6-layer, 0.062-inch thick PCB using FR-4 material. The individual layers areshown in Figure 4 through Figure 9 . The l...

www.ti.com 5.2 Bill of Materials Physical Description 20 SLWU028B – January 2006 – Revised November 2006 Submit Documentation Feedback

www.ti.com Physical Description Table 5. Bill of Materials NOT VALUE FOOTPRINT QTY PART NUMBER VENDOR DIGI-KEY NUMBER REF DESIGNATOR INSTALLED CAPACITORS 47- µ F, tantalum, 20%, 10-V 7343 4 ECS-T1AD476R Panasonic PCS2476CT-ND C65, C66, C68, C69 10- µ F, 10-V, 20% 3528 5 ECS-T1AX106R Panasonic PCS210...

www.ti.com 5.3 PCB Schematics Physical Description The schematics for the EVM are on the following pages. SLWU028B – January 2006 – Revised November 2006 25 Submit Documentation Feedback

A B C D D C B A ti 12500 TI Boulevard. Dallas, Texas 75243 Title: SHEET: OF: FILE: SIZE: DATE: REV: 11-Jul-2006 Drawn By: Engineer: C4 .1uF C5 .1uF CLKM CLKP CLKPCLKM ADS5545 B 1 7 J. VENABLE Y. DEWONCK C10 .1uF + C9 10uF + C8 10uF AVDD DRVDD C6 .1uF C7 .1uF INP INM INP INM IREF CM CM S1 SW-PB C1 .1...

www.ti.com Physical Description EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT,DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by ...

www.ti.com Physical Description FCC Warning This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT,DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be afinished end-product fit for general consumer use. It generates, uses, and can radiate radiofrequency en...