LMP8602 60V Fixed Gain Precision Amplifiers

Texas Instruments' common mode, 50x gain, bidirectional precision current sensing amplifiers

image of Texas Instruments' LMP8602 60V Fixed Gain Precision AmplifiersTexas Instruments' 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 –22 V to +60 V when operating from a single 5 V supply. With a 3.3 V supply, the input common mode voltage range is from –4 V to +27 V. 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.

Features Applications
  • TCVos: 10 µV/°C maximum
  • CMRR: 90 dB minimum
  • Input offset voltage: 1 mV maximum
  • CMVR at VS = 3.3 V: −4 V to 27 V
  • CMVR at VS = 5.0 V: −22 V to 60 V
  • 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

Fixed Gain Precision Amplifiers

ImageManufacturer Part NumberDescriptionAmplifier TypeNumber of CircuitsAvailable Quantity
LMP8602QMME/NOPB datasheet linkIC OPAMP CURR SENSE 60KHZ 8VSSOPLMP8602QMME/NOPBIC OPAMP CURR SENSE 60KHZ 8VSSOPCurrent Sense11200 - Immediate
9250 - Factory Stock
LMP8602QMME/NOPB product page link
LMP8602QMA/NOPB datasheet linkIC OPAMP CURR SENSE 60KHZ 8SOICLMP8602QMA/NOPBIC OPAMP CURR SENSE 60KHZ 8SOICCurrent Sense11498 - Immediate
LMP8602QMA/NOPB product page link
LMP8602MME/NOPB datasheet linkIC OPAMP CURR SENSE 60KHZ 8VSSOPLMP8602MME/NOPBIC OPAMP CURR SENSE 60KHZ 8VSSOPCurrent Sense11122 - Immediate
10000 - Factory Stock
LMP8602MME/NOPB product page link
LMP8602MA/NOPB datasheet linkIC OPAMP CURR SENSE 60KHZ 8SOICLMP8602MA/NOPBIC OPAMP CURR SENSE 60KHZ 8SOICCurrent Sense1924 - Immediate
7885 - Factory Stock
LMP8602MA/NOPB product page link
Published: 2010-09-21