Texas Instruments (TI) (NASDAQ: TXN) claims the industry’s first current-sense amplifier to integrate a high-precision, low-drift shunt resistor, which can deliver highly accurate measurements over a wide temperature range. TI’s INA250 integrates the shunt resistor with a bi-directional, zero-drift current-sense amplifier to support both low-side and high-side implementations. Its accuracy and low drift reduce or may eliminate designers’ calibration effort for many systems. This integration also enables lower system cost and a smaller board footprint compared to competitive solutions.
By enabling high-accuracy measurement along with low system cost and a small board footprint, the INA250 current-sense amplifier delivers higher performance to applications such as test and measurement, communications load monitoring, and power supplies. Test and measurement designers can achieve required performance levels and potentially eliminate calibration while reducing cost up to 76 percent. High-performance enterprise and telecom equipment designers can achieve distributed measurement to maximize system efficiency and enhance system management.
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Reduces system cost up to 76 percent and the board footprint up to 66 percent compared to competitive solutions by integrating the shunt resistor.And low power consumption: Maximum power consumption of 300 µA minimizes the load that the measurement methodology adds to the system.
The INA250 evaluation module (EVM) enables designers to quickly and easily evaluate the device’s accuracy. The INA250EVMis available from the TI store and authorized distributors for US$49. INA250 TINA-TI and TINA-TI Spice models are available for download.
source: http://www.powerpulse.net/story.php?storyID=32603
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