This user’s guide describes the characteristics, operation, and use of the INA310EVM. This EVM is designed to evaluate the performance of the INA310x. Throughout this document, the terms evaluation board, evaluation module, and EVM are synonymous with the INA310EVM. This document includes a schematic, reference printed circuit board (PCB) layouts, and a complete bill of materials (BOM).
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Always follow TI's set-up and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure your personal safety and those working around you. Contact TI's Product Information Center http://ti.com/customer support for further information.
Save all warnings and instructions for future reference.
Failure to follow warnings and instructions may result in personal injury, property damage or death due to electrical shock and burn hazards.
The term TI HV EVM refers to an electronic device typically provided as an open framed, unenclosed printed circuit board assembly. It is intended strictly for use in development laboratory environments, solely for qualified professional users having training, expertise and knowledge of electrical safety risks in development and application of high voltage electrical circuits. Any other use and/or application are strictly prohibited by Texas Instruments. If you are not suitable qualified, you should immediately stop from further use of the HV EVM.
As a precautionary measure, it is always good engineering practice to assume that the entire EVM may have fully accessible and active high voltages.
Limitation for safe use:
EVMs are not to be used as all or part of a production unit.
The INA310x is an ultra-precise current sense amplifier that can measure voltage drops across shunt resistors over a wide common-mode range from –4 V to 110 V, independent of supply voltage with an integrated comparator. The high precision current measurement accuracy is achieved through a combination of low offset voltage (20 µV, maximum), small gain error (0.15%, maximum) and a high DC CMRR (160 dB, typical). The INA310x has a high signal bandwidth of 1.3 MHz designed for high voltage DC current measurements and high-speed applications like fast overcurrent protection.
The INA310x incorporates an open-drain comparator and internal reference that provides a 0.6-V threshold. An external resistive divider sets the current trip point. The comparator includes a latching capability that can be made transparent by grounding (or leaving open) the RESET pin.
The INA310x operates from a single 2.7-V to 20-V supply and draws 1.6 mA of supply current. The INA310x is available in five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address a wide dynamic range of current-sensing applications.
The INA310x is specified over an operating temperature range of −40°C to +125°C and is offered in a space-saving 8-pin VSSOP package.
EVM ORDERABLE | PRODUCT | GAIN | MAX GAIN ERROR | MAX OFFSET VOLTAGE |
---|---|---|---|---|
INA310AEVM | INA310A1 | 20 V/V | 0.15% | ±20 µV |
INA310A2 | 50 V/V | |||
INA310A3 | 100 V/V | |||
INA310A4 | 200 V/V | |||
INA310A5 | 500 V/V | |||
INA310BEVM | INA310B1 | 20 V/V | 0.5% | ±150 µV |
INA310B2 | 50 V/V | |||
INA310B3 | 100 V/V | |||
INA310B4 | 200 V/V | |||
INA310B5 | 500 V/V |