Texas Instruments VCA5807 Скачать руководство пользователя страница 8 | Manualshive

Страница: 8 / 39

Texas Instruments VCA5807 Скачать руководство пользователя страница 8

Software Installation and Operation

The VCA LNA+VCA+PGA+LPF tab: The settings of the Low Noise Amplifier (LNA), VCA, Programmable
Gain Amplifier (PGA), and the Low Pass Filter (LPF) are adjusted in this tab.

•

LNA: Adjusts the gain of each channel, adjust the active termination resistors, and disable the LNA
offset Integrator

•

VCA: Adjusts the digital Time Gain Control (TGC) Attenuator

•

PGA: Adjusts the PGA gain, Clamp Level, and disable both the overload clamp and the offset
integrator

•

LPF: Adjusts the LPF frequency

Figure 4. VCA LNA+VCA+PGA+LPF Tab of the VCA5807EVM GUI

8

VCA5807 Development Guide

SLOU352 – November 2012

Submit Documentation Feedback

Copyright © 2012, Texas Instruments Incorporated

«
...
6
7
8
9
10
...
»

Содержание VCA5807

Страница 1: ...27 Contents 1 VCA5807 Overview 3 1 1 Important Disclaimer Information 3 2 Overview 3 2 1 Introduction 3 2 2 Default Configuration 4 3 Software Installation and Operation 5 3 1 Minimum Requirements 5 3 2 Installing the Software PC Application 5 3 3 GUI Overview 6 4 Hardware 11 4 1 Introduction 11 4 2 Board Configuration 12 4 3 Power 13 4 4 Clock Buffer 13 4 5 VCA Inputs 13 4 6 VCA5807 Device 13 4 7...

Страница 2: ... Second Layer Ground 23 14 Third Layer Power 24 15 Fourth Layer Signal 25 16 Fifth Layer Ground 26 17 Bottom Layer Signal 27 18 Schematic 1 of 10 28 19 Schematic 2 of 10 29 20 Schematic 3 of 10 30 21 Schematic 4 of 10 31 22 Schematic 5 of 10 32 23 Schematic 6 of 10 33 24 Schematic 7 of 10 34 25 Schematic 8 of 10 35 26 Schematic 9 of 10 36 27 Schematic 10 of 10 37 List of Tables 1 Related Document ...

Страница 3: ...ermore the user is fully responsible for the contact interface between the human body and electronics consequently the user is responsible for preventing electrical hazards such as shock electrostatic discharge and electrical overstress of electric circuit components 2 Overview 2 1 Introduction This document is intended as a step by step guide through the VCA5807 Evaluation Module EVM setup and te...

Страница 4: ...uration 1 P1 Power supplies connector 2 JP2 and JP3 are set to enable 3 3 V and 5 V power supplies to the device 3 JP15 Enables onboard VCNT 4 P17 Disables PDB_Global 5 P15 Chooses the device Common Mode for the I V Amp Common Mode 6 P16 Chooses Vss as 5 V for low side power supply on I V Amp 4 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instr...

Страница 5: ...PC Application The GUI software to evaluate the VCA5807 device is available at the Texas Instruments web site at www ti com VCA5807 Before installing the software make sure the VCA5807EVM is not connected to the PC If using a machine with Windows 7 it is recommended to have administrator rights to avoid problems during installation Unzip the installer file to a temporary directory and then double ...

Страница 6: ...ble by clicking the Software Reset button located at the bottom right of the GUI The VCA Introduction tab This tab gives a block diagram of the VCA5807 device Figure 2 Introduction Tab of the VCA5807EVM GUI 6 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 7: ...WARE POWER RST tab This tab allows the execution of different power down options Figure 3 Hardware Power RST Tab of the VCA5807EVM GUI 7 SLOU352 November 2012 VCA5807 Development Guide Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 8: ... adjust the active termination resistors and disable the LNA offset Integrator VCA Adjusts the digital Time Gain Control TGC Attenuator PGA Adjusts the PGA gain Clamp Level and disable both the overload clamp and the offset integrator LPF Adjusts the LPF frequency Figure 4 VCA LNA VCA PGA LPF Tab of the VCA5807EVM GUI 8 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback ...

Страница 9: ... tab as well as the phases of each CW channel 1 8 the CW CLK and the feedback resistors to control the gain CH7 and CH8 are brought to the CW pins by using the PGA Test Mode Figure 5 VCA CW Mode Tab 9 SLOU352 November 2012 VCA5807 Development Guide Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 10: ...be played back at any time by clicking on the Exec CMD File button This tab also displays the Write Status and the ability to see the digital waveform of the SCLK SDATA and SEN pins Figure 6 VCA Debugging Recording Tab 10 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 11: ...tors For the default configuration as shown in Figure 1 it is unnecessary to have an external sampling clock and external Vcntl supply The onboard CMOS clock and onboard Vcntl are used Figure 7 HW Setup 11 SLOU352 November 2012 VCA5807 Development Guide Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 12: ...tor After power up is complete three green LEDs and three red LEDs LED 41 LED42 and LED 43 are turned Locations of LEDs are shown in Figure 8 Figure 8 PCB Layout With Jumper Positions 12 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 13: ...og input signals for CH1 through CH8 Connect to a signal generator If the signal is too noisy apply a bandpass filter between the generator and the SMA to get a better result Use TP3 TP10 to see the input signal to the board 4 6 VCA5807 Device The VCA5807 device is a suitable ultrasound analog front end solution for high end systems and portable systems This device contains eight channels of VCA a...

Страница 14: ...Hardware www ti com 4 8 CW Mode Figure 9 CW Mode Hardware Configuration 14 VCA5807 Development Guide SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 15: ...E LED41 LED42 and LED43 on the VCA5807EVM should all illuminate Select 500 Ω for the gain control feedback resistor Figure 10 Switching to CW Mode 15 SLOU352 November 2012 VCA5807 Development Guide Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 16: ...om 0 V to 1 5 V If using the external Vcntl then a DC voltage source must be connected to J14 The default setup uses onboard Vcntl VR2 is used to make onboard Vcntl adjustments 4 10 Serial Interface The serial interface of the board is located on the bottom right hand side USB1 is the USB interface connector P13 and P14 are test points for the USB data bus From pin 1 to pin 9 the signals are D0 D4...

Страница 17: ...h the VCA5807EVM GUI Execute a software reset with the GUI and verify the current consumption drops from 0 762 A to 0 646 A Enable the Active Termination Resistor of 50 Ohms check the box on the LNA VCA PGA LPF tab This tab is also used to vary the gain on each channel However with the default settings as shown in the gain should be 42 dB overall Therefore with an input signal of 5 MHz at 32 dBm l...

Страница 18: ... C109 C116 C118 CAP SMT 0402 CAPACITOR SMT 0402 CER 15000p C119 C121 C123 F 16V 10 X7R 11 1 AVX 04025C102KAT2A C32 CAP SMT 0402 CAPACITOR SMT 0402 CER 1000pF 50V 10 X7R 12 4 AVX 04025C332KAT2A C22 C23 C24 C41 CAP SMT 0402 CAPACITOR SMT 0402 CER 3300pF 50V 10 X7R 13 2 AVX 04025A470JAT2A C175 C176 CAP SMT 0402 CAPACITOR SMT 0402 CER 47pF 5 0V 5 NPO 14 7 AVX 06033C104JAT2A C5 C7 C8 C12 C15 C88 C90 CA...

Страница 19: ...15 VCON_OPAMP IC SMT SOIC 8 HIGH SPEED LOW NOISE DIFFERENTIAL I O AMPLIFIERS 41 1 TI TPS79633DCQR U1 IC SMT SOT223 6 ULTRALOW NOISE HI PSRR FAST RF 1 A LDO LINEAR REGULATOR 3 3V 42 1 TI BURR BROWN OPA830IDBV U43 IC SMT SOT23 5 LOW POWER SINGLE SUPPLY WIDEBAND OPAMP 43 8 TI BURR BROWN OPA842IDBV U35 U36 U37 U38 U39 U40 U41 IC SMT SOT23 5 WIDEBAND LOW DIST UNITY GAIN U44 STABLE VOLTAGE FEEDBACK OPAM...

Страница 20: ...SHAY TNPW060349R9BEEA R9 R36 R37 RES SMT 0603 RESISTOR SMT 0603 THIN FILM 49 9 OHM 0 1 1 10W 77 1 KYCON STX 3000 JX1 STEREO PHONE STEREO PHONE JACK THU 3 JACK THU 3 PIN PIN 3 5mm 78 3 KEYSTONE ELECTRONICS 5000 TP2 TP33VA TP5V TESTPOINT THU 1P TESTPOINT THU MINIATURE 0 1LS 120TL RED 79 4 KEYSTONE ELECTRONICS 5001 GND1 GND2 GND3 GND4 TESTPOINT THU 1P TESTPOINT THU MINIATURE 0 1LS 120TL BLACK 80 2 KE...

Страница 21: ... R776 R777 UNINSTALLED VISHAY_0402_1x0 5x0 35mm_016H 107 16 COMPONENTS CORP TP105 01 04 TP34 TP35 TP36 TP37 TP38 UNINSTALLED TEST POINTS THU SMALL TL 70 TP39 TP40 TP41 TP42 TP43 YELLOW DNI TP44 TP45 TP46 TP47 TP48 TP49 108 1 ADVANCED CONNECTEK MNE20 5K5P10 USB1 CONN SMT 5P MINI AB USB OTG RECEPTACLE R A SMT TYPE Use 670 1523 1 ND instead 109 11 EFJOHNSON 142 0721 891 J2 J4 J6 J8 J14 J17 J28 J29 CO...

Страница 22: ...chematics B 1 PCB Layout Figure 12 through Figure 17 show the PCB layouts for this EVM Figure 12 Top Layer Signal 22 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 23: ...www ti com PCB Layout Figure 13 Second Layer Ground 23 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 24: ...PCB Layout www ti com Figure 14 Third Layer Power 24 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 25: ...www ti com PCB Layout Figure 15 Fourth Layer Signal 25 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 26: ...PCB Layout www ti com Figure 16 Fifth Layer Ground 26 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 27: ...www ti com PCB Layout Figure 17 Bottom Layer Signal 27 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 28: ...ND3 GND4 TP 5V C1 C68 C152 C69 U2 TP2 TP1 C4 Schematics www ti com B 2 Schematics Figure 18 through Figure 27 show the schematics for this EVM in landscape mode for readability Figure 18 Schematic 1 of 10 28 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 29: ...139 C140 C97 CLK_BUF CLK_BUF C129 C128 C75 C16 C93 C130 C34 C94 LED41 LED42 LED43 X1 R44 OSC1 C32 C31 R27 R29 R26 R28 R23 R30 R24 R43 www ti com Schematics Figure 19 Schematic 2 of 10 29 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 30: ...R77 C107 C108 C109 C118 C116 C119 C121 C123 C104 C77 C79 C81 C83 C85 C87 C126 TP10 TP6 TP9 TP5 TP8 TP4 TP7 TP3 Schematics www ti com Figure 20 Schematic 3 of 10 30 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 31: ...30 R831 R832 R836 R835 R834 R833 TP34 TP35 TP36 TP37 TP38 TP39 TP40 TP41 TP42 TP43 TP44 TP45 TP46 TP47 TP48 TP49 DUT1 www ti com Schematics Figure 21 Schematic 4 of 10 31 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 32: ... C338 C337 C354 R844 C328 C311 C312 R794 C336 C355 R845 J26 U42 C335 C320 C339 R837 R848 R849 C321 C319 R851 R850 R846 R847 C357 C358 J27 R810 R809 R798 R797 R800 R799 R802 R801 R796 R795 R812 R811 R804 R803 R793 U43 U35 R852 R736 C360 C291 C290 R855 C359 C267 C265 R854 R853 R734 R738 R776 R777 J33 J30 J32 J36 J34 J35 J31 J29 J28 Schematics www ti com Figure 22 Schematic 5 of 10 32 PCB Layout and ...

Страница 33: ...17 R76 R25 R42 R78 C28 C100 C30 C29 C26 C25 C102 C27 www ti com Schematics Figure 23 Schematic 6 of 10 33 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 34: ...5 C59 C58 C62 C63 R91 R95 U13 VR1 C64 C171 C172 C162 C161 R51 R52 R54 R55 R56 VCON_OPAMP C53 C60 Schematics www ti com Figure 24 Schematic 7 of 10 34 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 35: ...10 U10 JP56 JP57 JP53 C21 C20 C47 C48 JP52 C22 C23 C24 C41 R37 R36 C45 C18 R41 R22 R20 R21 C19 C46 www ti com Schematics Figure 25 Schematic 8 of 10 35 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 36: ...re are two ground planes here We isolate the USB circuit from the rest of the board The circuits are only coupled through the opto isolators Serial Interface Schematics www ti com Figure 26 Schematic 9 of 10 36 PCB Layout and Schematics SLOU352 November 2012 Submit Documentation Feedback Copyright 2012 Texas Instruments Incorporated ...

Страница 37: ... C89 C14 C13 C73 This Circuit provides 3 options for populating Op Amps for maximum flexibility ALL Bypass Caps in this circuit need to be tied close to the pin Differential could fit between the single ended amps in the layout www ti com Schematics Figure 27 Schematic 10 of 10 37 SLOU352 November 2012 PCB Layout and Schematics Submit Documentation Feedback Copyright 2012 Texas Instruments Incorpo...

Страница 38: ...esponsible 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 information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Страница 39: ... 401 Building No 5 JiuGe Business Center Lane 2301 Yishan Rd Minhang District Shanghai China Sales Direct 86 21 6401 6692 Email amall ameya360 com QQ 800077892 Skype ameyasales1 ameyasales2 Customer Service Email service ameya360 com Partnership Tel 86 21 64016692 8333 Email mkt ameya360 com ...

Отзывы:

Нет отзывов