peculiarity
Typical value，TA = 25 ° C
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Input offset voltage
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± 1 mV maximum
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TCV'soperating system
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± 15 μV/°C maximum
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Common-Mode Rejection Ratio (CMRR)
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80 dB minimum
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Output voltage swing
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Rail to rail
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bandwidth
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80 kHz
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Operating temperature range (ambient)
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-40°C to 125°C
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Supply voltage
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4.75V to 5.5V
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Supply current
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at 1mA
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illustrate
The LMP8270 is a fixed gain differential amplifier A - 2V to 16V input common-mode voltage range and 4.75V to 5.5V supply voltage range. The LMP8270 is part of the LMP precision amplifier family that will detect, amplify and filter small differential signals in the presence of high common-mode voltages. The gain is fixed at 20, which is sufficient, in most cases, to drive the full scale of the ADC. This gain is a preamplifier that implements two stages, one with 10 fixed gain and a fixed gain of 2 stage amplifiers. The internal signal path between these two stages is brought out by two pins, A1 and A2, which provide a filter network connection.
The LMP8270 will make the device suitable for load dump events such as automotive applications with an extended common-mode input voltage range.
apply
- Fuel injection control
- High- and low-side drive current sensing configurations
- Power management system
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