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Table 2-1. Analog Input Terminal Blocks (J1 - J5).......................................................................................................................

Table 2-2. Key Voltage Test Points..............................................................................................................................................

Table 3-1. PHI Connector Pin Functions......................................................................................................................................

Table 3-2. DEBUG Header Pins (J7).........................................................................................................................................

Table 5-1. Default Jumper Settings............................................................................................................................................

Table 5-2. Nominal Voltages: Default Configuration..................................................................................................................

Table 7-1. ADS131B26Q1EVM-PDK Bill of Materials................................................................................................................

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ADS131B26Q1EVM-PDK Evaluation Module

Содержание ADS131B26Q1EVM-PDK

Страница 1: ...y current and battery pack voltage with high resolution and accuracy The EVM allows evaluation of all aspects of the ADS131B26 Q1 This user s guide covers the operation of the ADS131B26Q1EVM PDK Throu...

Страница 2: ...re 2 3 ADC3A Voltage Input Circuit Schematic 8 Figure 3 1 External ADC Clock Options Schematic 10 Figure 4 1 DC DC Converter and Transformer Driver Circuit Schematic 11 Figure 4 2 ADC Analog and Digit...

Страница 3: ...gs 13 Table 5 2 Nominal Voltages Default Configuration 14 Table 7 1 ADS131B26Q1EVM PDK Bill of Materials 24 Trademarks LabVIEW is a registered trademark of National Instruments All trademarks are the...

Страница 4: ...tions DC DC converter output provides APWR and DPWR supplies which the ADC uses to generate AVDD and DVDD with the respective integrated low dropout regulators LDOs APWR and DPWR can be provided exter...

Страница 5: ...software and power is supplied to the EVM The default installation path is C Program Files x86 Texas Instruments ADS131B26 Q1 EVM 5 When the GUI finishes loading and is connected to the EVM hardware t...

Страница 6: ...input or general purpose digital input output 10 V to 10 V Gain 4 VPB GPIO0B 3 Differential current negative input Shorted to AGND default CNB 4 Differential current positive input 0 mA to 12 5 mA Ga...

Страница 7: ...and ADC2B The ADS131B26 Q1 features two multiplexed 16 bit ADC channels that are intended to measure shunt temperature using external temperature sensors and other voltages in the system For demonstr...

Страница 8: ...5 At gain 4 which allows an input voltage from 10 V to 10 V on the positive voltage measurement inputs VPA and VPB The negative voltage measurement inputs VNA and VNB are connected to AGND by default...

Страница 9: ...controller side of the EVM ISO_GPIO0 MHD J9 6 General purpose digital input output 0 or missing host detect output ISO_GPIO1 J9 8 General purpose digital input output 1 ISO_GPIO2 FAULT J9 10 General p...

Страница 10: ...digital circuitry inside the device The ADC modulator frequency fMOD is equal to one half the clock frequency fMOD fCLK 2 and controls the timing of the input sample and hold switches inside each delt...

Страница 11: ...ing frequency This clock operates asynchronously to the ADS131B26 Q1 internal clock CLK 8 192 MHz However the EVM also supports an external ADC clock which can be provided either by enabling the onboa...

Страница 12: ...analog and digital ADC supply options Figure 4 2 ADC Analog and Digital Supply Options Schematic 4 3 Power Supply and Voltage Reference Decoupling The power supply and ADC voltage reference pins for...

Страница 13: ...ult shunts Figure 5 1 ADS131B26Q1 PDK Jumper Default Settings Table 5 1 Default Jumper Settings Designator Position Function JP1 1 2 RCAPA is selected as bias voltage for the TMP61 JP2 2 3 Selects the...

Страница 14: ...tware folder of the ADS131B26Q1EVM PDK and run the GUI installer to install the EVM GUI software on your computer CAUTION Manually disable any antivirus software running on the computer before downloa...

Страница 15: ...Install this driver software anyway The ADS131B26Q1EVM PDK requires the LabVIEW run time engine and may prompt for the installation of this software as shown in Figure 5 4 if not already installed Fi...

Страница 16: ...on changes In the Data Capture Configuration section are basic settings and controls to initiate a data capture from the main ADC channels OSR13A and OSR13B allow data rates to be configured for ADC1A...

Страница 17: ...gister Map Configuration tool has three distinct views that summarize the current register map configuration At the top of the window is a tabular view where registers are listed in order of ascending...

Страница 18: ...Settings for ADC1A and ADC3A and Global Settings for ADC1B and ADC3B which contain the register settings from addresses 82h and C2h respectively Below the global channel settings are individual ADC c...

Страница 19: ...teps Steps 0 through 7 are displayed on the page by default and steps 8 through 15 can be displayed by selecting the corresponding tab on the bottom of each section Each step allows the following sett...

Страница 20: ...ollects the specified number of samples for all channels but some conversion data are missed from the faster channels reducing the effective data rate Initiate a data capture by specifying the number...

Страница 21: ...of non coherent sampling The 7 Term Blackman Harris window is the default option and has sufficient dynamic range to resolve the frequency components of a 24 bit ADC The None option corresponds to not...

Страница 22: ...t s Rule by default This method minimizes the mean squared error in the bin approximation assuming the data follows a Gaussian distribution Alternatively select Custom under the Binning Rule drop down...

Страница 23: ...of measurements after each DRDYn falling edge For demonstration purposes the GUI configures ADC1A and ADC1B to use the highest OSR setting which produces the minimum data rate and allows the maximum t...

Страница 24: ...C19 C22 C23 C25 C28 C44 C45 8 1uF CAP CERM 1 uF 25 V 10 X7R 0603 603 C0603C105K 3RACTU Kemet C24 1 0 22uF CAP CERM 0 22 uF 25 V 5 X7R 0603 603 C0603C224J 3RAC7867 Kemet C29 C35 C40 C42 4 10uF CAP CERM...

Страница 25: ...103 07 G S Samtec JP4 JP5 2 Header 100mil 2x1 Gold TH 2x1 Header TSW 102 07 G S Samtec LBL1 1 Thermal Transfer Printable Labels 0 650 W x 0 200 H 10 000 per roll PCB Label 0 650 x 0 200 inch THT 14 4...

Страница 26: ...R72 R73 R74 R75 R76 R77 R78 R79 R80 R81 R82 11 100k RES 100 k 1 0 1 W 0603 603 RC0603FR 0 7100KL Yageo R83 R84 R85 R86 R87 R88 R89 R90 R91 R92 R93 R94 12 33 RES 33 0 1 0 1 W 0603 603 RC0603FR 0 733RL...

Страница 27: ...Speed Robust EMC Six Channel Digital Isolators DW0016B SOIC 16 DW0016B ISO7762FQD WQ1 Texas Instruments ISO7762FQD WRQ1 Texas Instruments U4 1 High Speed Robust EMC Reinforced Six Channel Digital Iso...

Страница 28: ...2 Top Layer Figure 7 3 Ground Layer Figure 7 4 Power Layer Figure 7 5 Bottom Layer Figure 7 6 Bottom Silkscreen ADS131B26Q1EVM PDK Bill of Materials PCB Layout and Schematics www ti com 28 ADS131B26Q...

Страница 29: ...52 1 96k R56 13 7k R58 13 7k R59 1 96k R63 AGND ADC2B_V3B V3B AGND ADC2B_V4B V4B ADC2B_V6B V6B AGND ADC2B_V1B V1B AGND ADC2B_V2B V2B 10 5k R17 ADC2B_V5B V5B 10 5k R36 100nF C4 100nF C11 100nF C13 100n...

Страница 30: ...3V3 ISO_GND Digital Interface EVM_ID_PWR 0 R103 ISO_GND EVM_ID_SCL EVM_ID_SDA 0 R101 0 R102 ISO_GND WP EVM_REG_5V5 ISO_GND ISO_SDI ISO_CS ISO_SCLK ISO_DRDY ISO_RESET ISO_GPIO2 FAULT ISO_GPIO1 ISO_GPIO...

Страница 31: ...ther than TI b the nonconformity resulted from User s design specifications or instructions for such EVMs or improper system design or c User has not paid on time Testing and other quality control tec...

Страница 32: ...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 in...

Страница 33: ...instructions set forth by Radio Law of Japan which includes but is not limited to the instructions below with respect to EVMs which for the avoidance of doubt are stated strictly for convenience and s...

Страница 34: ...any interfaces electronic and or mechanical between the EVM and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electr...

Страница 35: ...R DAMAGES ARE CLAIMED THE EXISTENCE OF MORE THAN ONE CLAIM SHALL NOT ENLARGE OR EXTEND THIS LIMIT 9 Return Policy Except as otherwise provided TI does not offer any refunds returns or exchanges Furthe...

Страница 36: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

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