Texas Instruments ADS1605 User Manual
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Texas Instruments ADS1605 User Manual

Texas Instruments ADS1605 User Manual

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ADS1605 and ADS1606 EVM
User's Guide
April 2004
Data Acquistion
SLAU122A

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Summary of Contents for Texas Instruments ADS1605

  • Page 1 ADS1605 and ADS1606 EVM User’s Guide April 2004 Data Acquistion SLAU122A...
  • Page 2 TI product or service and is an unfair and deceptive business practice. TI is not responsible or liable for any such statements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions:...
  • Page 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 incorporating the goods.
  • Page 4 EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Mailing Address: Texas Instruments Post Office Box 655303 Dallas, Texas 75265 Copyright  2004, Texas Instruments Incorporated...
  • Page 5 About This Manual This user’s guide describes the characteristics, operation, and use of the ADS1605/6 EVM 16-bit analog-to-digital evaluation board. A complete circuit description as well as schematic diagram and bill of materials are included. Contact the Product Information Center or e-mail dataconvapps@list.ti.com...
  • Page 6 Trademarks TI Logo, TMS320C2000, TMSC3205000, TMS320C6000, and Code Composer Studio are trademarks of Texas Instruments.

  • Page 7: Table Of Contents

    ..........EVM BOM, ADS1605/06 EVM Layouts and Schematics .
  • Page 8 5−1 ADS1605 Bill of Materials ............

  • Page 9: Evm Overview

    Chapter 1 EVM Overview Topic Page Features ........... . . Introduction .

  • Page 10: Features

    Basic system-level logic decoding. 1.2 Introduction The ADS1605 EVM is a high speed high resolution delta sigma (∆Σ) analog-to- digital converter. It features a data rate of 5 MSPS, a bandwidth (−3 dB) of 2.45 MHz and a passband ripple of less than ±0.0025 dB.

  • Page 11: Analog Input

    Analog Input Table 1−1. Analog Interface Reference Reference Factory Set Condition Description Description Designator Designator 1−2 2−3 Analog Input options Selects AIN_N source Installed Not installed Selects AIN source Installed Not installed Reference voltage options Selects VREFN source Installed Not installed Selects VCOM source Installed Not installed...

  • Page 12: Modulator Clock

    To Analog Input 1.6 Modulator Clock The ADS1605 and ADS1606 partition the modulator clock as part of the analog section. There are two options available. The clock may either be supplied via the on-board 40-MHz oscillator, or externally via J5. This option is useful for low-jitter coherent sampling during testing.

  • Page 13: Digital Interface

    Chapter 2 Digital Interface The chapter describes the EVM digital interface consisting of the following subsections: Topic Page Board-Level Control ......... . . External Interface .

  • Page 14: Switch Function Control

    2.1 Board-Level Control 2.1.1 DIP Switch Options There are optional settings for the ADS1605/06 that are set and controlled manually via a DIP switch – SW1. The functions controlled by this switch are summarized below. Table 2−1. Switch Function Control...

  • Page 15: Resetting The Ads1605 And Ads1606

    2.1.3 Resetting the ADS1605 and ADS1606 The ADS1605 and ADS1606 are synchronously reset on the EVM when the RESET pin is asserted LOW. This can be accomplished by issuing a write command (WR) via the host system or momentarily depressing switch SW2.

  • Page 16: External Interface

    Platform based DSK with standard expansion connectors to connect to the EVM. Figure 2−1 shows the arrangement of DSK, interface card and EVM. Figure 2−1. Arrangement of DSK, Interface Card and EVM ADS1605/06 EVM 5−6K Interface Card DSK Platform For interfaces to other platforms, such as C2000 DSP and programmable...

  • Page 17: Data Connector Pinout

    Data Connector Pinout 2.3 Data Connector Pinout The data from the ADC is available at J2/P2. The assignment and function of each pin is given in Table 2−5. Table 2−5. Assignment and Function at J2/P2 Pin Number Function Pin Number Function IO Ground IO Ground...

  • Page 19: Power Distribution

    Chapter 3 Power Distribution The ADS1605/6EVM board requires various power sources for operation. A dual ±6 Vdc supply for best performance of the analog front−end. If a ±6 Vdc supply is not readily available, a ±5 Vdc supply will be sufficient. This voltage is delivered by P4/J4 pins 1 &...

  • Page 20: Using The Evm With A Ti Dsk

    see Figure 3−2 for details. If The User Chooses to Use a DSK The Voltage Can be Derived Directly From The DSK, Check Apply ±6 V (or ±5 V) for the Apply +5 V for the Analog The Jumper Settings. Analog Front-End Here Section of the ADC Here Alternatively, Supply Power via...

  • Page 21: Using The Evm With An External Reference Voltage

    8−40 V for external voltage reference Figure 3−2. Using the EVM with an External Reference Voltage Power Distribution...

  • Page 23: Getting The Most From Your Evm

    Chapter 4 Getting the Most From Your EVM In general there are two hardware directions that the user can take with the EVM. Topic Page Stand-Alone EVM ..........DSP Interface .

  • Page 24: Stand-Alone Evm

    . For the example programs available with the ADS1605 EVM, the plug-in is not needed, as all the files are provided. The program itself performs the following steps: Initialization of global variables by calling the function dc_configure() with the settings of the ADS1605.

  • Page 25: Jumper Settings For J13 And J14 On The 5−6K Interface Card

    Figure 4−1. Jumper Settings for J13 and J14 on the 5−6K Interface Card Make sure that all jumpers on the ADS1605/1606 EVM are set to the factory defaults, as described in the chapters 1 and 2 of this User’s Guide Additionally, set the jumper W11 to position 2−3 to configure the interrupt...

  • Page 26: Ccs Project Menu

    DSP Interface Figure 4−2. CCS Project Menu Figure 4−3. CCS Project Open Dialog Once the project is open, expand the project tree by clicking on the (+) in front of it and expand the source files as well. The project window should in Figure 4−4.

  • Page 27: Ccs Project View

    Program selecting file ADS1605−CXXXX.out from the Debug submenu, where the XXXX in the filename stands for the platform you use (5510, 6711, 6713, 6416). Now open the main.c source file by double-clicking on the file name in the project view and scroll down to the line, where the read command for the ADS1605 is issued (dc_rblock() function).

  • Page 28: Ccs Context Menu

    DSP Interface Figure 4−5. CCS Context Menu With this done, a new dialog window with the properties of the graph appears. Here, a few values must be entered, whereas most of the settings can be left in the default position: Start Address: This is the starting location of the acquisition buffer containing the data to be graphed.

  • Page 29: Ccs Graph Property Windows

    DSP Interface DSP Data Type: Select 16−bit signed integer from the drop−down list, as the ADS1605 is a 16−bit converter Sampling Rate (Hz): This field contains the sampling frequen- cy for acquisition buffer samples, such as for analog to digital conversion.

  • Page 30: Ccs Window With Graph

    DSP Interface Figure 4−7. CCS Window With Graph...

  • Page 31: Evm Bom, Ads1605/06 Evm Layouts And Schematics

    ....... . . 5-13 EVM BOM, ADS1605/06 EVM Layouts and Schematics...

  • Page 32: Evm Bill Of Materials

    EVM Bill of Materials 5.1 EVM Bill of Materials The following tables contains a complete Bill of Materials for the ADS1605 and ADS1606 EVM. Table 5−1. ADS1605 Bill of Materials Value Ref Des Description Vendor Part number 0.001 µF C6, C9, C16,...
  • Page 33 C26, C82, Panasonic ECJ−3YB0J226M ceramic X5R 1206 22 µF Capacitor tantalum 22 µF Kemet T494A226M010AS 10V 20% SMD Resistor array 33 Ω 33 R RP1, RP2, CTS Corporation 742C083330JTR RP3, RP4, 8-terminal 4-resistor SMD EVM BOM, ADS1605/06 EVM Layouts and Schematics...
  • Page 34 279−RN73CA−392R R9, R10, R12, tolerance 10 PPM 392 R R13, R17, R21, R22, R23, R25, R26, R27, R28, R29, ADS1605 PWB 6455109 16 Bit 5MSPS ADC W FIFO Texas ADS1605IPAPT Instruments Switch dip 8 pos half pitch ITT Industries TDA08H0SK1 J1, J3 2 x 10 x 0.1 SMT 20-pin...
  • Page 35 Panasonic EVQ−PJU04K 240 GF SMD AIN, TP1, SMT Test Point Keystone 5015 TP2, TP3, Electronics TP4, VREF AGND Turret terminal test point Cambion 180−7337−02−05 IO_GND IO_GND IO_GND IO_GND Silicon Transistor NPN Infineon SMBT3906INCT−ND EVM BOM, ADS1605/06 EVM Layouts and Schematics...

  • Page 36: Ads1606 Bill Of Materials

    EVM Bill of Materials Table 5−2. ADS1606 Bill of Materials Value Ref Des Description Vendor Part number 0.001 µF C6, C9, C16, Capacitor ceramic 1000 pF AVX Corporation 06035A102JAT2A C17, C66 5% 50 V NP0 0603 0.01 µF C1, C22, C28, Capacitor 10000 pF 50 V Kemet C0603C103J5RACTU...
  • Page 37 RP1, RP2, CTS Corporation 742C083330JTR RP3, RP4, 8-terminal 4-resistor SMD 36.5 K RES 36.5 kΩ 1/10W 1% Panasonic ERJ−6ENF3652V 0805 SMD 40−Pin header 2 x 20 x 0.1 SMT square Samtec TSM−120−01−T−DV post header EVM BOM, ADS1605/06 EVM Layouts and Schematics...
  • Page 38 EVM Bill of Materials Value Ref Des Description Vendor Part number 40−Pin socket 2 x 20 x 0.1 SMT Samtec SSW−120−22−F−D−VS−K strip 47 µF Capacitor 47 µF 16 V C63, C69, Panasonic ECS−T1CD476R C74, C77, tantalum TE SMD C74, C77, C92, C96 Resistor 49.9 Ω...
  • Page 39 Panasonic EVQ−PJU04K 240 GF SMD AIN, TP1, SMT Test Point Keystone 5015 TP2, TP3, Electronics TP4, VREF AGND Turret terminal test point Cambion 180−7337−02−05 IO_GND IO_GND IO_GND IO_GND Silicon Transistor NPN Infineon SMBT3906INCT−ND EVM BOM, ADS1605/06 EVM Layouts and Schematics...

  • Page 40: Ads1605/06 Evm Layout Details

    ADS1605/06 EVM Layout Details 5.2 ADS1605/06 EVM Layout Details Figure 5−1. Top Tracking Layer 5-10...

  • Page 41: Internal Power And Ground Layers

    ADS1605/06 EVM Layout Details Figure 5−2. Internal Power and Ground Layers EVM BOM, ADS1605/06 EVM Layouts and Schematics 5-11...

  • Page 42: Bottom Tracking Layer

    ADS1605/06 EVM Layout Details Figure 5−3. Bottom Tracking Layer 5-12...

  • Page 43: Ads1605/06 Evm Schematics

    ADS1605/06 EVM Schematics 5.3 ADS1605/06 EVM Schematics The schematics shown on the following pages. EVM BOM, ADS1605/06 EVM Layouts and Schematics 5-13...
  • Page 44 HOST_A2 HOST_A3 RESET* RESET* +12v DRDY_OUT HEADER 10 X 2 AGND IO_GND Power 12500 TI Boulevard. Dallas, Texas 75243 Title: ADS1605 / 06 Block Diagram Engineer: Joe Purvis DOCUMENTCONTROL # REV: 6455110 Drawn By: Joe Purvis FILE: DATE: 17-Nov-2003 SIZE: SHEET: Block Diagram.Sch...
  • Page 45 AGND AGND OPA2822U .01uF AINN 49.9R 0.1uF 10uF AIN_N 100pF AGND AGND 12500 TI Boulevard. Dallas, Texas 75243 Title: ADS1605 / 06 Analog Input Engineer: Joe Purvis DOCUMENTCONTROL # 6455110 REV: Drawn By: Joe Purvis FILE: DATE: 17-Nov-2003 SIZE: SHEET:...
  • Page 46 36.5K 0.1uF REFEN* REFEN DOUT[07] DOUT[06] DRATE 4 / 8* DRATE DOUT[05] DOUT[04] AGND AVDD AGND 0.1uF ADS1605 / 06 DRDY B_DRDY B_OTR DVDD3.0V 0.1uF 0.1uF DVDD3.0V 12500 TI Boulevard. Dallas, Texas 75243 Title: DGND DGND ADS1605 / 06 Engineer:...
  • Page 47 AGND 12.1K AGND .001uF AGND OPA2822U TO ANALOG INPUT CIRCUIT 3.01K 10uF .01uF 12500 TI Boulevard. Dallas, Texas 75243 Title: ADS1605 / 06 Voltage Reference AGND Engineer: Joe Purvis AGND DOCUMENTCONTROL # REV: 6455110 Drawn By: Joe Purvis FILE: DATE:...
  • Page 48 IO_GND IOVDD C106 C109 0.1uF IO_GND B_DRDY B_OTR DRDY 12500 TI Boulevard. Dallas, Texas 75243 IO_GND SN74AHC541 Title: ADS1605 / 06 Data Bus Buffers Engineer: Joe Purvis DOCUMENTCONTROL # REV: 6455110 Drawn By: Joe Purvis FILE: DATE: 17-Nov-2003 SIZE: SHEET:...
  • Page 49 12500 TI Boulevard. Dallas, Texas 75243 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF SN74AHC1G86 SN74AHC1G86 SN74AHC1G32 SN74AHC1G04 SN74AHC1G04 Title: SN74AHC32 ADS1605 / 06 Digital Interface Engineer: Joe Purvis DOCUMENTCONTROL # REV: 6455110 IO_GND IO_GND IO_GND IO_GND IO_GND IO_GND Drawn By: Joe Purvis...
  • Page 50 AGND1 IO_GND1 220uH IO_GND DVDD3.0V 47uF 4.7uF 0.1uF AGND IO_GND MOD_AGND AGND 12500 TI Boulevard. Dallas, Texas 75243 Title: ADS1605 / 06 Power J4/P4 Engineer: Joe Purvis DOCUMENTCONTROL # REV: 6455110 Drawn By: Joe Purvis FILE: DATE: 17-Nov-2003 SIZE: SHEET:...
  • Page 51 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments ADS1606EVM ADS1605EVM...

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