National Semiconductor TSW3070EVM, User Manual

Page 1: ...e an active interface implementation using a wide bandwidth operational amplifier and a THS3091 and THS3095 to showcase an operational amplifier with large voltage swing Also included on board are a C...

Page 2: ...ircuit Board Layout 27 10 1 Design Resources 27 List of Figures 1 Block Diagram 4 2 Home Menu Showing EVM Status 10 3 DAC5682Z Register Configuration and Block Diagram Menu 11 4 DAC5682Z Register and...

Page 3: ...rally acceptable with no degradation in performance The OPA circuits have been designed to have a combined output gain of 2 2x whereas the THS3091 and THS3095 circuit has a gain of 3 3x The resistor n...

Page 4: ...by 16 can be replaced with a divide by 4 or 8 with a 90 degree phase shift if desired This device is used to lock the onboard 800 MHz VCXO and 10 MHz reference For further information about the CDCM7...

Page 5: ...higher external operational amplifier supplies The amplifier circuits can be further optimized by following the guidelines in the application report SBAA135 This optimization can be performed once the...

Page 6: ...Incorporated TSW3070EVM Amplifier Interface to Current Sink DAC Arbitrary Waveform Generator Demonstration The destination directory for the installer is displayed It is recommended to leave the defa...

Page 7: ...016 Submit Documentation Feedback Copyright 2008 2016 Texas Instruments Incorporated TSW3070EVM Amplifier Interface to Current Sink DAC Arbitrary Waveform Generator Demonstration Click Next again to s...

Page 8: ...Demonstration Restart the PC as directed 4 2 DAC5682Z EVM Driver Installation Once the PC has restarted connect the provided USB cable to the PC and connector J13 of the EVM Power up TSW3070EVM using...

Page 9: ...o complete the driver installation If a DAC5682 EVM driver has been previously installed Windows Hardware Wizard may not require the drivers to be installed and these steps will not be required The so...

Page 10: ...gs DAC5682Z data path and help window 5 2 Software Boxes The DAC5682Z software interface controls are divided into boxes The functionality of these boxes is described in Table 2 Table 2 Software Box D...

Page 11: ...evised May 2016 Submit Documentation Feedback Copyright 2008 2016 Texas Instruments Incorporated TSW3070EVM Amplifier Interface to Current Sink DAC Arbitrary Waveform Generator Demonstration Figure 3...

Page 12: ...8 Revised May 2016 Submit Documentation Feedback Copyright 2008 2016 Texas Instruments Incorporated TSW3070EVM Amplifier Interface to Current Sink DAC Arbitrary Waveform Generator Demonstration Figure...

Page 13: ...view Table 3 contains a complete reference of all the software controls Table 3 Software Feature Descriptions Control Name Input Output Description MENU BOX EVM Home Input Displays EVM Home Box DAC568...

Page 14: ...he DLL is bypassed and the LVDS data source is responsible for providing correct setup and hold timing DLL Sleep Input Output When set the DLL is put into sleep mode Auto DLL Input When set the DLL is...

Page 15: ...B Input Output Offset adjustment value for the B data path DAC A LPF Input Output Enables a 95 kHz low pass filter corner on the DACA current source bias When disabled a 472 Hz filter corner is used D...

Page 16: ...erence and VCXO frequencies and M and N values If this frequency differs from the VCXO frequency it is displayed in red OUTPUT SETTINGS Y0 Y4 Dividers Input Selects the output dividers of the CDCM7005...

Page 17: ...own of THS3091 and THS3095 Vamp Pin 1 2 JP12 CDC_PD Low active power down of CDCM7005 3 3 VCLK Pin 1 2 JP13 VCXOB Choose internal VCXO or external VCXO INB Internal VCXO Pin 1 2 JP14 VCXO_P Choose int...

Page 18: ...The test setup for the TSW3070EVM is shown in Figure 6 This setup shows the TSW3100 pattern generator supplying an LVDS signal to the TSW3070EVM see the TSW3100 product folder http www ti com tool ts...

Page 19: ...differential in to single ended out configuration The gain of the OPA695 has been set to 2 2x and the THS3091 and THS3095 have been set to a gain of 3 3x The input on the OPA695 has an effective 25 l...

Page 20: ...ruments Incorporated TSW3070EVM Amplifier Interface to Current Sink DAC Arbitrary Waveform Generator Demonstration A low pass filter LPF is between the DAC outputs and the OPA695 THS3091 and THS3095 T...

Page 21: ...0 1 Marker 1 T1 2 28 dBm 11 093589744 MHz 2 Delta 2 T1 0 02 dB 2 003205128 MHz 3 Delta 3 T1 80 00 dB 2 003205128 MHz 4 Delta 4 T1 79 19 dB 4 006410256 MHz www ti com Demonstration Kit Test Configurati...

Page 22: ...Test Configuration Test Equipment 7 1 Test www ti com 22 SLWU055A May 2008 Revised May 2016 Submit Documentation Feedback Copyright 2008 2016 Texas Instruments Incorporated TSW3070EVM Amplifier Interf...

Page 23: ...and if it is capable of reading the serial number from the EVM This determines if the communication between the board and the PC is correct The HOME menu of the DAC GUI software indicates this status...

Page 24: ...file for loading the DAC5682z called DLL_4X_Interp reg5682 can be found on the provided CD To load this file click on the Load Regs button on the right center side of the GUI Navigate to the correct l...

Page 25: ...default set up to output signals through the OPA695 THS3091 and THS3095 These devices can be individually bypassed to a transformer output if needed To bypass the OPA695 move R6 to R109 and R15 to R13...

Page 26: ...the situation merits remove the ferrite beads that connect the OPA695 to the VAMP supplies FB10 FB11 To connect external supplies the VAMP amplifier net must be disconnected from the onboard 5V net T...

Page 27: ...nly be modified by bearing in mind the design of the DAC termination and operational amplifier configuration Both outputs of the amplifiers are intended to drive 50 test equipment 10 Schematic Bill of...

Page 28: ...ing the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repa...

Page 29: ...transmitter has been approved by Industry Canada to operate with the antenna types listed in the user guide with the maximum permissible gain and required antenna impedance for each antenna type indic...

Page 30: ...ified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pass transistors current sens...

Page 31: ...REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE L...

Page 32: ...sponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related inf...