INA200EVM

User's Guide SBOU135 – August 2014 INA200EVM User's Guide This user’s guide describes the characteristics, operation, and use of the INA200EVM evaluation module. It discusses how to set up and configure the software and hardware, and reviews various aspects of the program operation. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the INA200EVM. This document also includes an electrical schematic, printed circuit board (PCB) layout drawings, and a parts list for the EVM. 1 2 3 Contents Overview ..................................................................................................................... 2 INA200EVM Hardware ...................................................................................................... 3 Schematic, PCB Layout, and Bill of Materials ........................................................................... 5 List of Figures 1 INA200 Test Board Block Diagram ........................................................................................ 3 2 INA200 Test Board Schematic ............................................................................................. 5 3 INA200EVM Component Placement ...................................................................................... 6 4 PCB Top Layer ............................................................................................................... 7 5 PCB Bottom Layer ........................................................................................................... 8 1 INA200EVM Kit Contents ................................................................................................... 2 2 Related Documentation ..................................................................................................... 2 3 INA200 Test Board BOM List of Tables .................................................................................................. SBOU135 – August 2014 Submit Documentation Feedback INA200EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 9 1 Overview 1 www.ti.com Overview The INA200 is a high-side, current-shunt monitor with an open-drain comparator and reference. The INA200EVM has one PCB. The EVM consists of the INA200 device, screw-terminals and test points for external hardware connections, placeholder pads to add components for filtering, pin-socketed resistors to adjust the comparator input voltage, and a comparator reset button with an optional jumper to hold reset low. 1.1 INA200EVM Kit Contents Table 1 summarizes the contents of the INA200EVM kit. The included hardware is pictured on the front page. Contact the nearest Texas Instruments Product Information Center if any component is missing. Make sure to check the INA200 product folder on the TI web site at www.ti.com for any further information regarding this product. Table 1. INA200EVM Kit Contents 1.2 Item Quantity INA200 test board 1 Related Documentation from Texas Instruments The following documents provide information regarding Texas Instruments' integrated circuits used in the assembly of the INA200EVM. This user's guide is available from the TI web site under literature number SBOU135. Any letter appended to the literature number corresponds to the document revision that is current at the time of the writing of this document. Newer revisions may be available from the TI web site (http://www.ti.com), or call the Texas Instruments' Literature Response Center at (800) 477-8924 or the Product Information Center at (972) 644-5580. When ordering, identify the document by both title and literature number. Table 2. Related Documentation Document Literature Number INA200 product data sheet SBOS374 All trademarks are the property of their respective owners. 2 INA200EVM User's Guide SBOU135 – August 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated INA200EVM Hardware www.ti.com 2 INA200EVM Hardware The INA200EVM requires a 2.7-V to 18-V power supply. Connect the VIN+ and VIN– pins across an external shunt resistor in series with a –16-V to 80-V supply to find the current flowing through that resistor. Use a voltmeter on the OUT pin to measure the voltage output. The comparator input (CMP_IN) is directly connected to the OUT pin through an optional resistor network in order to drive the comparator high and low appropriately for the comparator voltage level. 2.1 Theory of Operation for the INA200EVM A block diagram of the INA200 test board hardware is shown in Figure 1. The INA200 test board contains four, two-pin headers, giving access to all eight pins of the INA200 for evaluation. Support circuitry is included on the PCB but can be removed or bypassed if needed. Vsource V+ INA200 V+ VIN+ OUT VIN- CMPIN GND Rshunt CMPOUT /RESET V+ Figure 1. INA200 Test Board Block Diagram 2.2 INA200EVM Features The INA200EVM provides basic functional evaluation of this device. The fixture layout is not intended to be a model for the target circuit, nor is it laid out for electromagnetic compatibility (EMC) testing. The layout of the INA200EVM printed circuit board (PCB) is designed to provide the following features: • Ease of access to all device pins • Multiple input signal options • Space for optional input filtering capacitors and resistors • An adjustable resistor divider from the analog output to the comparator input • A pushbutton reset for the comparator The INA200EVM allows connection to both sides of a remote shunt resistor to measure current, or omit the shunt resistor and apply a differential voltage directly to the device input. This flexibility allows testing device operation in a simulated manner, as well as an actual application. Refer to the product data sheet for comprehensive information about the INA200, INA201, and INA202 family of devices. SBOU135 – August 2014 Submit Documentation Feedback INA200EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 3 INA200EVM Hardware 2.3 www.ti.com Quick Start Setup and Use Follow these procedures to set up and use the INA200EVM: 1. Connect an external dc supply voltage between 2.7 V and 18 V to the PS1 terminal. 2. Connect the desired input to the PS2 terminal. This input is either a remote shunt resistor or a differential voltage source with a common-mode voltage of –16 V to 80 V referenced to GND. 2.4 Voltage Inputs The PS2 terminal (VIN+ and VIN–) is used to connect to a remote shunt resistor or a differential voltage source. The voltage differential is multiplied by the 20-V/V device gain of the INA200. Other devices in this family are the INA201 with 50-V/V gain, and the INA202 with 100-V/V gain. The full-scale sense input voltage (VSENSE) is defined as VIN+ – VIN–, and has a maximum input of (V+ – 0.25) / gain. VSENSE must be greater than 20 mV for operation in the linear response range of the device. 2.5 Comparator Input, R1, and R2 To take advantage of the onboard comparator in the INA200, connect the analog output through a resistor divider to the comparator input. The negative input of the comparator is internally connected to a 0.6-V reference, and the positive comparator input is connected to the CMPIN pin of the device. Adjust R1 and R2 (shown in Figure 2) to set the comparator trip point for the intended application, where CMPIN = (OUT × R2) / (R1 + R2) = 0.6 V. For example, if measuring current across a 10-mΩ shunt resistor, and the comparator must be tripped if an excess of 10 A is measured, then: 10 A × 10 mΩ = 100 mV, and 100 mV × 20 V/V gain = 2 V. To divide 2 V down to 0.6 V, select R1 and R2 so that R2 / (R1 + R2) = 0.3. A combination that works for this example is R1 = 5.1 kΩ and R2 = 2.2 kΩ. 4 INA200EVM User's Guide SBOU135 – August 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Schematic, PCB Layout, and Bill of Materials www.ti.com 3 Schematic, PCB Layout, and Bill of Materials 3.1 Schematic Figure 2 shows the complete schematic of the INA200 test board. R1 and R2 work as a voltage divider of the INA output to the comparator input. R3 is a pull-up resistor for the reset button. R4 is a pull-up resistor for the open-drain comparator ouput pin. C1 is a bypass capacitor for V+. C2 along with R5 and R6 create an optional filter for the VIN+ and VIN– inputs. V+ V+ PS1 1 2 C1 0.1µF ED555/2DS GND GND R2 R1 1.00k 1.00k GND VIN+ PS2 2 1 OUT CMPIN R5 U1 47 8 C2 0.022µF R6 ED555/2DS 7 47 VIN1 2 3 RESET 3 4 5 GND J1 5-146261-1 2 1 4-1437565-1 V+ VIN+ V+ VIN- OUT CMPIN CMPOUT RESET GND 1 2 CMPOUT 6 R4 4 4.7k V+ INA200AIDGK R3 100k GND /RESET V+ Figure 2. INA200 Test Board Schematic SBOU135 – August 2014 Submit Documentation Feedback INA200EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 5 Schematic, PCB Layout, and Bill of Materials 3.2 www.ti.com PCB Layout Figure 3 shows the component placement on the INA200EVM test board. There are no components on the bottom layer. Figure 4 and Figure 5 show the top and bottom layers, respectively, of the test board. Figure 3. INA200EVM Component Placement 6 INA200EVM User's Guide SBOU135 – August 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Schematic, PCB Layout, and Bill of Materials www.ti.com Figure 4. PCB Top Layer SBOU135 – August 2014 Submit Documentation Feedback INA200EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 7 Schematic, PCB Layout, and Bill of Materials www.ti.com Figure 5. PCB Bottom Layer 8 INA200EVM User's Guide SBOU135 – August 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Schematic, PCB Layout, and Bill of Materials www.ti.com 3.3 Bill of Materials Table 3 lists the bill of materials (BOM) for the INA200 test board. Table 3. INA200 Test Board BOM Qty RefDes 8 /RESET, CMPIN, CMPOUT, GND, OUT, V+, VIN+, VIN- Description Part Number MFR Test Point, Compact, SMT 5016 Keystone 1 C1 CAP, CERM, 0.1uF, 50V, +/-20%, X7R, 1206 12065C104MAT2A AVX Corp. 4 H1, H2, H3, H4 Bumpon, Hemisphere, 0.375 X 0.235, Black SJ61A2 3M 1 J1 Header, 100mil, 2x1, Gold plated, TH 5-146261-1 TE Connectivity ED555/2DS ON Shore Technology RES, 1.00k ohm, 1%, 0.25W, TH CMF501K0000FHEB Vishay Dale Socket, Mini Spring, Tin, TH 5050935-2 TE Connectivity 4 PS1, PS2, PS3, PS4 Terminal Block, 6A, 3.5mm Pitch, 2-Pos, TH 2 R1, R2 4 R1-1, R1-2, R2-1, R2-2 1 R3 RES, 100k ohm, 5%, 0.25W, 1206 CRCW1206100KJNEA Vishay Dale 1 R4 RES, 4.7k ohm, 5%, 0.25W, 1206 CRCW12064K70JNEA Vishay Dale 2 R5, R6 RES, 0 ohm, 5%, 0.25W, 1206 CRCW12060000Z0EA Vishay Dale 1 RESET Switch, Tactile, SPST-NO, 0.05A, 12V, SMT 4-1437565-1 TE Connectivity 1 U1 High-Side Measurement Current-Shunt Monitor with Open-Drain Comparator and Reference, DGK0008A INA200AIDGK Texas Instruments SBOU135 – August 2014 Submit Documentation Feedback INA200EVM User's Guide Copyright © 2014, Texas Instruments Incorporated 9 ADDITIONAL TERMS AND CONDITIONS, WARNINGS, RESTRICTIONS, AND DISCLAIMERS FOR EVALUATION MODULES Texas Instruments Incorporated (TI) markets, sells, and loans all evaluation boards, kits, and/or modules (EVMs) pursuant to, and user expressly acknowledges, represents, and agrees, and takes sole responsibility and risk with respect to, the following: 1. User agrees and acknowledges that EVMs are intended to be handled and used for feasibility evaluation only in laboratory and/or development environments. Notwithstanding the foregoing, in certain instances, TI makes certain EVMs available to users that do not handle and use EVMs solely for feasibility evaluation only in laboratory and/or development environments, but may use EVMs in a hobbyist environment. All EVMs made available to hobbyist users are FCC certified, as applicable. Hobbyist users acknowledge, agree, and shall comply with all applicable terms, conditions, warnings, and restrictions in this document and are subject to the disclaimer and indemnity provisions included in this document. 2. Unless otherwise indicated, EVMs are not finished products and not intended for consumer use. EVMs are intended solely for use by technically qualified electronics experts who are familiar with the dangers and application risks associated with handling electrical mechanical components, systems, and subsystems. 3. User agrees that EVMs shall not be used as, or incorporated into, all or any part of a finished product. 4. User agrees and acknowledges that certain EVMs may not be designed or manufactured by TI. 5. User must read the user's guide and all other documentation accompanying EVMs, including without limitation any warning or restriction notices, prior to handling and/or using EVMs. Such notices contain important safety information related to, for example, temperatures and voltages. For additional information on TI's environmental and/or safety programs, please visit www.ti.com/esh or contact TI. 6. User assumes all responsibility, obligation, and any corresponding liability for proper and safe handling and use of EVMs. 7. Should any EVM not meet the specifications indicated in the user’s guide or other documentation accompanying such EVM, the EVM may be returned to TI within 30 days from the date of delivery for a full refund. THE FOREGOING LIMITED WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY TI TO USER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. TI SHALL NOT BE LIABLE TO USER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES RELATED TO THE HANDLING OR USE OF ANY EVM. 8. No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine, process, or combination in which EVMs might be or are used. TI currently deals with a variety of customers, and therefore TI’s arrangement with the user is not exclusive. TI assumes no liability for applications assistance, customer product design, software performance, or infringement of patents or services with respect to the handling or use of EVMs. 9. User assumes sole responsibility to determine whether EVMs may be subject to any applicable federal, state, or local laws and regulatory requirements (including but not limited to U.S. Food and Drug Administration regulations, if applicable) related to its handling and use of EVMs and, if applicable, compliance in all respects with such laws and regulations. 10. User has sole responsibility to ensure the safety of any activities to be conducted by it and its employees, affiliates, contractors or designees, with respect to handling and using EVMs. Further, user is responsible to ensure that any interfaces (electronic and/or mechanical) between EVMs and any human body are designed with suitable isolation and means to safely limit accessible leakage currents to minimize the risk of electrical shock hazard. 11. User shall employ reasonable safeguards to ensure that user’s use of EVMs will not result in any property damage, injury or death, even if EVMs should fail to perform as described or expected. 12. User shall be solely responsible for proper disposal and recycling of EVMs consistent with all applicable federal, state, and local requirements. Certain Instructions. User shall operate EVMs within TI’s recommended specifications and environmental considerations per the user’s guide, accompanying documentation, and any other applicable requirements. Exceeding the specified ratings (including but not limited to input and output voltage, current, power, and environmental ranges) for EVMs may cause property damage, personal injury or death. If there are questions concerning these ratings, user should contact a TI field representative prior to connecting interface electronics including input power and intended loads. Any loads applied outside of the specified output range may result in unintended and/or inaccurate operation and/or possible permanent damage to the EVM and/or interface electronics. Please consult the applicable EVM user's guide prior to connecting any load to the EVM output. If there is uncertainty as to the load specification, please contact a TI field representative. During normal operation, some circuit components may have case temperatures greater than 60°C as long as the input and output are maintained at a normal ambient operating temperature. These components include but are not limited to linear regulators, switching transistors, pass transistors, and current sense resistors which can be identified using EVMs’ schematics located in the applicable EVM user's guide. When placing measurement probes near EVMs during normal operation, please be aware that EVMs may become very warm. As with all electronic evaluation tools, only qualified personnel knowledgeable in electronic measurement and diagnostics normally found in development environments should use EVMs. Agreement to Defend, Indemnify and Hold Harmless. User agrees to defend, indemnify, and hold TI, its directors, officers, employees, agents, representatives, affiliates, licensors and their representatives harmless from and against any and all claims, damages, losses, expenses, costs and liabilities (collectively, "Claims") arising out of, or in connection with, any handling and/or use of EVMs. User’s indemnity shall apply whether Claims arise under law of tort or contract or any other legal theory, and even if EVMs fail to perform as described or expected. Safety-Critical or Life-Critical Applications. If user intends to use EVMs in evaluations of safety critical applications (such as life support), and a failure of a TI product considered for purchase by user for use in user’s product would reasonably be expected to cause severe personal injury or death such as devices which are classified as FDA Class III or similar classification, then user must specifically notify TI of such intent and enter into a separate Assurance and Indemnity Agreement. RADIO FREQUENCY REGULATORY COMPLIANCE INFORMATION FOR EVALUATION MODULES Texas Instruments Incorporated (TI) evaluation boards, kits, and/or modules (EVMs) and/or accompanying hardware that is marketed, sold, or loaned to users may or may not be subject to radio frequency regulations in specific countries. General Statement for EVMs Not Including a Radio For EVMs not including a radio and not subject to the U.S. Federal Communications Commission (FCC) or Industry Canada (IC) regulations, TI intends EVMs to be used only for engineering development, demonstration, or evaluation purposes. EVMs are not finished products typically fit for general consumer use. EVMs may nonetheless generate, use, or radiate radio frequency energy, but have not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or the ICES-003 rules. Operation of such EVMs may cause interference with radio communications, in which case the user at his own expense will be required to take whatever measures may be required to correct this interference. General Statement for EVMs including a radio User Power/Frequency Use Obligations: For EVMs including a radio, the radio included in such EVMs is intended for development and/or professional use only in legally allocated frequency and power limits. Any use of radio frequencies and/or power availability in such EVMs and their development application(s) must comply with local laws governing radio spectrum allocation and power limits for such EVMs. It is the user’s sole responsibility to only operate this radio in legally acceptable frequency space and within legally mandated power limitations. Any exceptions to this are strictly prohibited and unauthorized by TI unless user has obtained appropriate experimental and/or development licenses from local regulatory authorities, which is the sole responsibility of the user, including its acceptable authorization. U.S. Federal Communications Commission Compliance For EVMs Annotated as FCC – FEDERAL COMMUNICATIONS COMMISSION Part 15 Compliant Caution This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications could void the user's authority to operate the equipment. FCC Interference Statement for Class A EVM devices This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at its own expense. FCC Interference Statement for Class B EVM devices This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. 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 installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. • Consult the dealer or an experienced radio/TV technician for help. Industry Canada Compliance (English) For EVMs Annotated as IC – INDUSTRY CANADA Compliant: This Class A or B digital apparatus complies with Canadian ICES-003. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Concerning EVMs Including Radio Transmitters This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Concerning EVMs Including Detachable Antennas Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. This radio 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 indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Canada Industry Canada Compliance (French) Cet appareil numérique de la classe A ou B est conforme à la norme NMB-003 du Canada Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de l'utilisateur pour actionner l'équipement. Concernant les EVMs avec appareils radio Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. Concernant les EVMs avec antennes détachables Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. Le présent émetteur radio a été approuvé par Industrie Canada pour fonctionner avec les types d'antenne énumérés dans le manuel d’usage et ayant un gain admissible maximal et l'impédance requise pour chaque type d'antenne. Les types d'antenne non inclus dans cette liste, ou dont le gain est supérieur au gain maximal indiqué, sont strictement interdits pour l'exploitation de l'émetteur. Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright © 2014, Texas Instruments Incorporated spacer Important Notice for Users of EVMs Considered “Radio Frequency Products” in Japan EVMs entering Japan are NOT certified by TI as conforming to Technical Regulations of Radio Law of Japan. If user uses EVMs in Japan, user is required by Radio Law of Japan to follow the instructions below with respect to EVMs: 1. 2. 3. Use EVMs in a shielded room or any other test facility as defined in the notification #173 issued by Ministry of Internal Affairs and Communications on March 28, 2006, based on Sub-section 1.1 of Article 6 of the Ministry’s Rule for Enforcement of Radio Law of Japan, Use EVMs only after user obtains the license of Test Radio Station as provided in Radio Law of Japan with respect to EVMs, or Use of EVMs only after user obtains the Technical Regulations Conformity Certification as provided in Radio Law of Japan with respect to EVMs. Also, do not transfer EVMs, unless user gives the same notice above to the transferee. 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