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Texas Instruments AMC7834 Скачать руководство пользователя страница 9

AMC7834EVM Hardware Overview

9

SLAU608B – December 2014 – Revised May 2016

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Copyright © 2014–2016, Texas Instruments Incorporated

AMC7834 Evaluation Module

4.2

Connecting the Hardware

To connect the SDM-USB-DIG to the EVM board, align and firmly connect the female and male ends of
the 20-pin connectors (see

). Verify the connection is snug, as loose connections may cause

intermittent operation.

Figure 6. Typical Hardware Connections on the AMC7834EVM

4.3

Connecting the USB Cable to the SDM-USB-DIG

shows the typical response when connecting the SDM-USB-DIG platform to a USB port of a PC

for the first time. The PC usually responds with a popup dialog window that states

Found New Hardware,

USB Device

. The popup window then changes to

Found New Hardware, Virtual COM Port (CDC)

. This

popup indicates that the device is ready for use. The CDC driver is used for communication between the
SDM-USB-DIG and PC.

Figure 7. Confirmation of SDM-USB-DIG Platform Driver Installation

4.4

AMC7834EVM Power Configurations

This section describes the various power configurations that can be used by the EVM.

The AMC7834EVM provides terminal blocks for external supplies as well as (optional) onboard power
conditioning to convert a 24-V supply into a +5-V, –5-V, and +2.5-V supply. Jumpers JP11, JP12, JP13,
and JP14 allow the AVDD / DVDD, VCC, AV

ss

, and IOVDD inputs to be configured to use these onboard

supplies, or external supplies through the terminal blocks. The reference can also be connected to the
o2.5-V supply or the external REFIN or REF_ADC/CMP pins located on J3-17 and J3-18,
respectively

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Содержание AMC7834

Страница 1: ...6 3 AMC7834EVM Software Setup 7 3 1 Operating Systems for AMC7834EVM Software 7 3 2 AMC7834EVM Software Installation 7 4 AMC7834EVM Hardware Overview 8 4 1 Electrostatic Discharge Warning 8 4 2 Connec...

Страница 2: ...25 CH FALR CT Menu 21 26 Alarmout 21 27 Alarmout 21 28 GPIO Page 22 29 GPIO Write Read 22 30 AMC7834EVM Schematic 1 of 2 23 31 AMC7834EVM Schematic 2 of 2 24 32 AMC7834EVM PCB Components Layout 25 Li...

Страница 3: ...site www ti com 1 The 24 V wall adapter is not included with the evaluation module EVM Optionally a 24 V 750 mA center positive wall adapter can be separately purchased to interface to the onboard 2 1...

Страница 4: ...r the EVM A personal computer PC runs software that communicates with the SDM USB DIG platform which generates the power and digital signals used to communicate with the EVM board An optional 24 V wal...

Страница 5: ...put 4 DIG_GPIO3 GPIO control output or measure input 5 SDA I2 C data signal SDA 6 DIG_GPIO4 GPIO control output or measure input 7 DIG_GPIO1 GPIO Control Output or Measure Input 8 DIG_GPIO5 GPIO contr...

Страница 6: ...tform The SDM USB DIG platform is a general purpose data acquisition system that is used on select TI EVMs The core component of the platform is the MSP430F5528 an ultra low power 16 bit MCU The micro...

Страница 7: ...der on the TI website After the software is downloaded on the PC navigate to the AMC7834EVM_Installer folder and run the setup exe file as shown in Figure 4 When the software is launched an installati...

Страница 8: ...ode connected transistor Q1 JP6 Installed Reference Selection Installed REF_ADC CMP connects to onboard 2 5 V supply Not Installed External reference signal is applied to REF_ADC CMP JP7 Shunt on 1 2...

Страница 9: ...t states Found New Hardware USB Device The popup window then changes to Found New Hardware Virtual COM Port CDC This popup indicates that the device is ready for use The CDC driver is used for communi...

Страница 10: ...connect to the J3 header which is described in Table 6 Table 6 AMC7834EVM ADC SENSE Signal Connections Name Connector Description ADC1 J3 15 ADC channel 1 input ADC2 J3 13 ADC channel 2 input ADC3 J3...

Страница 11: ...ble 9 AMC7834EVM DAC Signal Connections Name Connector Description DAC1 J5 7 DAC1 bipolar DAC output DAC2 J5 5 DAC2 bipolar DAC output DAC3 J5 3 DAC3 bipolar DAC output DAC4 J5 1 DAC4 bipolar DAC outp...

Страница 12: ...al Definition Name Connector Description GPIO1 J6 13 General Purpose I O GPIO1 GPIO2 J6 15 General Purpose I O GPIO2 GPIO3 J6 17 General Purpose I O GPIO3 GPIO4 J6 19 General Purpose I O GPIO4 Sleep1...

Страница 13: ...GUI Power On If the SDM USB DIG has a faulty connection or is not connected at all the GUI launches in simulation mode In simulation mode NOT CONNECTED Simulating is displayed in the top right area o...

Страница 14: ...ean checkboxes in the Register Data column as displayed in Figure 11 Figure 11 Low Level Configuration Page This low level configuration page also provides the option to save the register map settings...

Страница 15: ...M is currently configured to use the onboard 2 5 V reference Figure 13 displays the options for internal or external reference operation These options can be selected in the Powerdown Mode drop down m...

Страница 16: ...tially and repeatedly When one set of conversions is complete the ADC multiplexer returns to the first channel and repeats the process Stop the auto conversion process by pressing Start Conv button ag...

Страница 17: ...i com AMC7834EVM Software Overview 17 SLAU608B December 2014 Revised May 2016 Submit Documentation Feedback Copyright 2014 2016 Texas Instruments Incorporated AMC7834 Evaluation Module Figure 17 ADC C...

Страница 18: ...Additional DAC reference configurations are illustrated in Table 7 After the DAC reference configuration is set the DACs can be programmed and released from the clamp voltage by unchecking the Enable...

Страница 19: ...DACs that have been set in synchronous mode in the DAC Sync register The Read DACs button also reads from the DAC data registers and updates the input fields with the read values The DAC read buttons...

Страница 20: ...opriate channel s mux Once the channels are active the Low Limit and High Limit fields are available for edit see Figure 24 Figure 24 Low Level Configuration Page The Write Settings button is used to...

Страница 21: ...T terminal By default the ALARMOUT terminal is active low the polarity of the ALARMOUT terminal can be configured by setting the ALARMOUT POLARITY bit in the ALARMOUT configuration register Figure 26...

Страница 22: ...Module Figure 28 GPIO Page Use the GPIO Block section of the GPIO tab as shown in Figure 29 to set the various GPIO functions To perform a write or read set the W R Function pull down to either Write...

Страница 23: ...3 JP9 1 2 3 JP8 GND GND 1 2 J1 1 2 J2 REF_IN REF_OUT REF_IN REF_OUT REF_ADC CMP REF_ADC CMP GND GND GND C10 0 1uF GND C11 0 1uF VDD VCC VDD C12 0 1uF VSS GND C13 0 1uF GND GND VDD C7 0 1uF IOVDD C9 0...

Страница 24: ...1 NC 2 FB 3 NC 4 NC 5 NC 6 GND 7 NC 8 NC 9 NC 10 NC 11 NC 12 EN 13 NR SS 14 IN 15 IN 16 NC 17 NC 18 NC 19 OUT 20 PAD U5 TPS7A3301RGW 47 F C26 47 F C27 NI R37 NI R39 0 R40 NI R41 NI R42 0 R43 NI R44 NI...

Страница 25: ...d May 2016 Submit Documentation Feedback Copyright 2014 2016 Texas Instruments Incorporated AMC7834 Evaluation Module 6 2 AMC7834EVM PCB Components Layout Figure 32 shows the layout of the components...

Страница 26: ...0 01 T DV P 21 1 J7 Connector DC Jack 2 1X5 5 mm TH CUI Inc PJ 102A 22 13 JP1 JP2 JP3 JP4 JP5 JP7 JP8 JP9 JP10 JP11 JP12 JP13 JP14 Header TH 100mil 3x1 Gold plated 230 mil above insulator Samtec Inc T...

Страница 27: ...Bumpon Hemisphere 0 44 X 0 20 Clear 3M SJ 5303 CLEAR Revision History NOTE Page numbers for previous revisions may differ from page numbers in the current version Changes from A Revision January 2016...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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