Texas Instruments INA281EVM User Manual Download Page 10 | Manualshive

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Schematic, PCB Layout, and Bill of Materials

10

SBOU244 – June 2020

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Copyright © 2020, Texas Instruments Incorporated

INA281EVM

6.2

PCB Layout

through

illustrate the PCB layout for the INA281EVM.

Figure 3. INA281EVM Top Overlay

Figure 4. INA281EVM Bottom Overlay

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Summary of Contents for INA281EVM

Page 1: ...ule EVM This EVM is designed to evaluate the performance of the INA281 voltage output current shunt monitor in a variety of configurations Throughout this document the terms evaluation board evaluatio...

Page 2: ...Keep work area clean and orderly b Qualified observer s must be present anytime circuits are energized c Effective barriers and signage must be present in the area where the TI HV EVM and its interfac...

Page 3: ...ight 2020 Texas Instruments Incorporated INA281EVM 3 Personal Safety a Wear personal protective equipment for example latex gloves or safety glasses with side shields or protect EVM in an adequate luc...

Page 4: ...upply voltages between 2 7 V and 20 V and draws a typical of 1 7 mA at room temperature Table 1 INA281 Gain Option Summary Product Gain V V INA281A1 and INA281B1 20 INA281A2 and INA281B2 50 INA281A3 a...

Page 5: ...inouts of the A and B versions the layouts and test point locations are also different Each of the PCB cutouts consists of one INA281Xn device where X is A or B and n is 1 2 3 4 or 5 and test points a...

Page 6: ...d Vin J1_Xn tabs Given the internal GND reference of the device make sure that the Vin pin is the more positive of the two inputs 2 Additionally if the differential voltage supply is a floating supply...

Page 7: ...Vin and Vin pads which are sensed by IN and IN input pins If used make sure R1_Xn has proper power dissipation for the selected current load The chosen resistor must have a 2512 footprint 5 4 U1_Xn I...

Page 8: ...show how the board is laid out they are not intended to be used for manufacturing INA281EVM PCBs 6 1 Schematics Figure 1 shows the schematic of the INA281EVM for all gain versions for the A pinout The...

Page 9: ...ww ti com Schematic PCB Layout and Bill of Materials 9 SBOU244 June 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated INA281EVM Figure 2 INA281EVM Schematic Gain B1 Pane...

Page 10: ...0 SBOU244 June 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated INA281EVM 6 2 PCB Layout Figure 3 through Figure 9 illustrate the PCB layout for the INA281EVM Figure 3...

Page 11: ...Schematic PCB Layout and Bill of Materials 11 SBOU244 June 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated INA281EVM Figure 5 INA281EVM Top Layer Figure 6 INA281EVM Bo...

Page 12: ...B Layout and Bill of Materials www ti com 12 SBOU244 June 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated INA281EVM Figure 7 INA281EVM Top Solder Figure 8 INA281EVM Bo...

Page 13: ...www ti com Schematic PCB Layout and Bill of Materials 13 SBOU244 June 2020 Submit Documentation Feedback Copyright 2020 Texas Instruments Incorporated INA281EVM Figure 9 INA281EVM Drill Drawing...

Page 14: ...3_A5 R3_B1 R3_B2 R3_B3 R3_B4 R3_B5 R4_A1 R4_A2 R4_A3 R4_A4 R4_A5 R4_B1 R4_B2 R4_B3 R4_B4 R4_B5 30 0 RES 0 5 0 1 W AEC Q200 Grade 0 0603 0603 ERJ 3GEY0R00V Panasonic TP1_A1 TP1_A2 TP1_A3 TP1_A4 TP1_A5...

Page 15: ...SOT23 5 INA281B4IDBVR Texas Instruments U1_B5 1 INA281 4 V to 110 V 1 3 MHz Current Sense Amplifier SOT23 5 INA281B5IDBVR Texas Instruments C2_A1 C2_A2 C2_A3 C2_A4 C2_A5 C2_B1 C2_B2 C2_B3 C2_B4 C2_B5...

Page 16: ...e resources are subject to 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 reprod...

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