LMP8602 60V Fixed Gain Precision Amplifiers



National Semiconductor LMP8602 60V Fixed Gain Precision Amplifiers

National Semiconductor's common mode, 50x gain, bidirectional precision current sensing amplifiers

National Semiconductor's LMP8602 is a fixed gain precision amplifier. The device will amplify and filter small differential signals in the presence of high common mode voltages. The input common mode voltage range is –22V to +60V when operating from a single 5V supply. With a 3.3V supply, the input common mode voltage range is from –4V to +27V. The LMP8602 is a member of the Linear Monolithic Precision (LMP ®) family and is ideal for unidirectional and bidirectional current sensing applications. Several parameter values of these amplifiers are 100% tested, and some values are also 100% tested over temperature.

The LMP8602 devices have a precise gain of 50x, which is adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 10x and an output stage buffer amplifier with a gain of 5x. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain.   LMP8602 Datasheet

  Features   Applications
  • TCVos: 10µV/°C maximum
  • CMRR: 90dB minimum
  • Input offset voltage: 1mV maximum
  • CMVR at VS = 3.3V: −4V to 27V
  • CMVR at VS = 5.0V: −22V to 60V
  • Operating ambient temperature range:
    −40°C to 125°C
  • Single supply bidirectional operation
  • All minimum / maximum limits 100% tested
  • High side and low side driver configuration current sensing
  • Bidirectional current measurement
  • Current loop to voltage conversion
  • Automotive fuel injection control
  • Transmission control
  • Power steering
  • Battery management systems
  • RoHS Compliant

National Semiconductor
Part Number
Digi-Key
Part Number
Automotive Enhancements Package  
LMP8602MME/NOPB LMP8602MMETR-ND - 8-MSOP, Micro8™,
8-uMAX, 8-uSOP
LMP8602 Datasheet
LMP8602QMME/NOPB LMP8602QMMETR-ND Incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies 8-MSOP, Micro8™,
8-uMAX, 8-uSOP
LMP8602MA/NOPB LMP8602MA-ND - 8-SOIC
(3.9mm Width)
LMP8602QMA/NOPB LMP8602QMA-ND Incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies 8-SOIC
(3.9mm Width)