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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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LMP8640 bảng dữ liệu(PDF) 1 Page - National Semiconductor (TI) |
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LMP8640 bảng dữ liệu(HTML) 1 Page - National Semiconductor (TI) |
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1 / 16 page  LMP8640/LMP8640HV September 7, 2010 Precision High Voltage Current Sense Amplifier General Description The LMP8640 and the LMP8640HV are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high input common mode voltages with a supply voltage range from 2.7V to 12V. The LMP8640 accepts input signals with common mode volt- age range from -2V to 42V, while the LMP8640HV accepts input signal with common mode voltage range from -2V to 76V. The LMP8640 and LMP8640HV have fixed gain for ap- plications that demand accuracy over temperature. The LMP8640 and LMP8640HV come out with three different fixed gains 20V/V, 50V/V, 100V/V ensuring a gain accuracy as low as 0.25%. The output is buffered in order to provide low output impedance. This high side current sense amplifier is ideal for sensing and monitoring currents in DC or battery powered systems, excellent AC and DC specifications over temperature, and keeps errors in the current sense loop to a minimum. The LMP8640 and LMP8640HV are ideal choice for industrial, automotive and consumer applications, and it is available in TSOT-6 package. Features Typical values, T A = 25°C ■ High common-mode voltage range — LMP8640 -2V to 42V — LMP8640HV -2V to 76V ■ Supply voltage range 2.7V to 12V ■ Gain options 20V/V; 50V/V; 100V/V ■ Max gain error 0.25% ■ Low offset voltage 900µV ■ Input bias current 13 μA ■ PSRR 85 dB ■ CMRR (2.1V to 42V) 103 dB ■ Temperature range -40°C to 125°C ■ 6-Pin TSOT Package Applications ■ High-side current sense ■ Vehicle current measurement ■ Motor controls ■ Battery monitoring ■ Remote sensing ■ Power management Typical Application 30071462 LMP™ is a trademark of National Semiconductor Corporation. © 2010 National Semiconductor Corporation 300714 www.national.com |
Số phần tương tự - LMP8640 |
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Mô tả tương tự - LMP8640 |
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