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User's Guide

SLAU455A–August 2012–Revised October 2012

ADS58H4x (ADS58H40/ADS58H43) EVM

This document serves as a user’s guide for the ADS58H4x (ADS58H40/ADS58H43) Evaluation Module

(EVM). The EVM provides a platform for evaluating the ADS58H40 or the ADS58H43, a quad-channel,

14-bit telecommunications analog-to-digital converter (ADC) operating at sampling rates of up to 250

MSPS. Designed for low-power consumption and high spurious free dynamic range (SFDR), the ADC has

low-noise performance and outstanding SFDR over a large input-frequency range.

The four ADC channels are separated into two blocks with two ADCs each. Each block can individually be

configured into three different operating modes: 11-bit Operating mode, 11-bit SNRBoost mode, 14-bit

High Resolution Burst mode.

This EVM is ideally suited for mating with the TSW1400 Capture Card for performing a data capture into a

capture buffer, uploading the sample data to a PC, performing an FFT, and reporting on SNR, SFDR, and

other performance metrics.

For more information regarding the ADS58H4x and the related evaluation tools, please refer to the

following:

• ADS58H40 – Quad 14-bit 250-MSPS ADC with SNRBoost and Burst Mode (SBAS589)

• TSW1400 – High-Speed Data Capture and Pattern Generation Platform (SLWU079)

• ADS58H40 EVM Configuration Software (SLAC533). This software is compatible for both ADS58H40

and ADS58H43.

Contents

1 Introduction .................................................................................................................. 2

1.1 EVM Block Diagram ............................................................................................... 2

1.2 EVM Power Supply ................................................................................................ 3

1.3 EVM Connectors and Jumpers ................................................................................... 4

1.4 EVM ADC Input Circuit Configurations .......................................................................... 6

2 Software Control ............................................................................................................ 7

2.1 Installation Instructions ............................................................................................ 7

2.2 Software Operation ................................................................................................ 7

3 Basic Test Procedure ..................................................................................................... 10

3.1 Test Block Diagram .............................................................................................. 10

3.2 Test Set-up Connection .......................................................................................... 11

3.3 ADS58H4x Software Quick Start Guide ....................................................................... 11

3.4 ADS58H4x and TSW1400 Setup Guide ....................................................................... 11

List of Figures

1 Simplified ADS58H4x EVM Block Diagram.............................................................................. 2

2 Simplified ADS58H4x EVM Power Supply .............................................................................. 3

3 ADS58H4x EVM Connector and Jumper Locations.................................................................... 4

4 ADS58H4x ADC Input Circuit ............................................................................................. 6

5 ADS58H4x Clock Input Circuit ............................................................................................ 6

6 ADS58H4x Main Panel..................................................................................................... 8

7 ADS58H4x SNRBoost/Burst Mode Panel ............................................................................... 9

8 ADS58H4x and TSW1400 Test Setup Block Diagram ............................................................... 10

9 Select ADS58H40 in the High Speed Converter Pro GUI Program ................................................ 12

SLAU455A–August 2012–Revised October 2012 ADS58H4x (ADS58H40/ADS58H43) EVM

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Summary of content (21 pages)

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User's Guide SLAU455A – August 2012 – Revised October 2012 ADS58H4x (ADS58H40/ADS58H43) EVM This document serves as a user’s guide for the ADS58H4x (ADS58H40/ADS58H43) Evaluation Module (EVM). The EVM provides a platform for evaluating the ADS58H40 or the ADS58H43, a quad-channel, 14-bit telecommunications analog-to-digital converter (ADC) operating at sampling rates of up to 250 MSPS.
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Introduction www.ti.com 10 Load ADC Firmware Prompt ............................................................................................. 12 11 ADS58H4x 11-bit Operating Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz............ 13 12 ADS58H4x 11-bit SNRBoost Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz ........... 14 13 TSW1400 Trigger Option .................................................................................................
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Introduction www.ti.com The clock input is supplied by way of a single-ended signal to an SMA connector and transformer coupled producing a differential clock signal for the ADS58H4x. Power to the EVM is typically supplied by a single 6-V power brick. Banana jacks may also be used to supply power to the EVM. All necessary voltages for the ADS58H4x are derived from the 6-V input connection. 1.2 EVM Power Supply Figure 2 illustrates the power supply options available on the EVM.
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Introduction 1.3 www.ti.com EVM Connectors and Jumpers USB LVDS J4 LVDS D3 D4 TRIG HIRE RDY S J5 D2 USB_PWR 1 D1 6VDC 1 JP6 SW1 1 RESET JP2 JP4 JP1 JP5 JP8 TRIG RDY JP3 1 SW2 TRIG EN JP10 HIRES 1 JP9 SNRB_EN JP11 PDN 1 1 J6 J1 JP12 TRIG IN JP7 RESET J3 J2 GND PWR IN 1 J14 CHA DNI CHD DNI ADS58H4x J13 J7 J12 J8 J10 CLKIN CH B J9 DNI J11 DNI CHC Figure 3.
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Introduction www.ti.com Table 2. ADS58H4x EVM Connectors (continued) Reference Designator Description J13 CH D input (positive) J14 CH D input (negative) DNI The on-board jumper options allow configuration of on-board power supplies and ADC options. Many of the jumper selections that involve DC inputs or static control signals are by way of push-on square post jumpers. The jumper options are listed in Table 3. The table indicates the default settings of the jumpers as the EVM is normally shipped.
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Introduction www.ti.com LED D1 is lit indicating the presence of the 6-V supply voltage to the EVM, while LED D2 is lit indicating the presence of the USB to serial converter power. LEDs D3 and D4 indicate the status of the ADS58H4x High Resolution Burst Mode. Table 5 lists the description of each LED indicator. Table 5. ADS58H4x EVM LED Indicators Reference Designator 1.
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Software Control www.ti.com 2 Software Control 2.1 Installation Instructions • • • • • 2.2 Open the ADS58H40_Installer_vxpx folder (xpx represents the latest version, which is 2.0 at the time of this writing) Run Setup.
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Software Control 2.2.1 www.ti.com Control Options Figure 6.
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Software Control www.ti.com Figure 7. ADS58H4x SNRBoost/Burst Mode Panel 2.2.2 • • • 2.2.3 Register Control Send All: Sends the register configuration to all devices Save Regs: Saves the register configuration for all devices Load Regs: Load a register file for all devices.
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Basic Test Procedure 3 www.ti.com Basic Test Procedure This section outlines the basic test procedure for testing the EVM. 3.1 Test Block Diagram The test set-up for evaluation of the EVM with the TSW1400 Capture Card is shown in Figure 8. As seen in this figure, the evaluation setup involves a clock from a high-quality signal generator and a sine wave for the analog input from a high-quality signal generator.
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Basic Test Procedure www.ti.com 3.2 Test Set-up Connection 1. Connect the J5 connector of the EVM to the J3 connector of TSW1400 EVM 2. Connect 5 V to the J12 supply input connector of the TSW1400 and 6 V to the J1 supply input connector of the EVM 3. Provide a sample clock at J10 SMA connector of the EVM 4. Provide a sine wave for the analog input at J6, J8, J11, or J13 SMA connectors of the EVM 5. Connect a USB cable from the TSW1400 to the programming computer 6.
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Basic Test Procedure www.ti.com Figure 9. Select ADS58H40 in the High Speed Converter Pro GUI Program 2. When prompted Do you want to update the Firmware for ADC?, select Yes Figure 10. Load ADC Firmware Prompt 3. Select Single Tone FFT Test under Test Selection 4. Select the number of sample points (and resulting number of FFT bins). The example shown in Figure 11 has 65536 samples. 5. Enter the ADS58H4x sampling rate. The example shown in Figure 11 has the sample rate set at 245.76 MSPS. 6.
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Basic Test Procedure www.ti.com 8. Press the Capture button on the High Speed Data Converter Pro GUI. Observe an FFT result similar to that of Figure 11. Figure 11. ADS58H4x 11-bit Operating Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz If the basic capture at this point is correct, then the front panel options of the SPI GUI and the front panel options of the TSW1400 GUI may be varied. The two examples below show the 11-bit SNRBoost mode and the 14-bit High Resolution Burst Mode.
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Basic Test Procedure www.ti.com Figure 12. ADS58H4x 11-bit SNRBoost Mode, Single Tone Test Result: Fs = 245.76 MSPS, Fin = 170 MHz Single tone FFT test (ADS58H4x 14-bit High Resolution Burst Mode) 1. Select the ADS58H40-14b device. 2. After selecting Single Tone FFT Test under Test Selection, enter the sample rate, input frequency, and the number of samples. 3. Select channel A, B, C, or D depending on which channel is connected to the signal generator. 4.
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Basic Test Procedure www.ti.com Figure 13. TSW1400 Trigger Option 5. In the EVM GUI, enable High Resolution Burst Mode of the channels under evaluation. Set the desired high- and low-resolution samples. The example shown in Figure 14 has both high samples and low samples set to maximum. This ensures that the entire FFT is analyzed with 14-bit capture for accurate SNR and SFDR calculations. 6. ADS58H4x Trigger Options • If the ADS58H4x has auto-trigger enabled, set the J12 jumper to the 2-3 position.
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Basic Test Procedure www.ti.com Figure 14. ADS58H4x 14-bit High-Resolution Mode, Single Tone Test Result: Fs = 245.
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments (TI) provides the enclosed Evaluation Board/Kit/Module (EVM) under the following conditions: The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies TI from all claims arising from the handling or use of the goods.
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FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
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【Important Notice for Users of this Product in Japan】】 This development kit is NOT certified as Confirming to Technical Regulations of Radio Law of Japan If you use this product in Japan, you are required by Radio Law of Japan to follow the instructions below with respect to this product: 1. 2. 3. Use this product in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.
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EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For Feasibility Evaluation Only, in Laboratory/Development Environments. Unless otherwise indicated, this EVM is not a finished electrical equipment and not intended for consumer use.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.