Texas Instruments LMP860x/LMP860x-Q1 60V Current Sensing Amplifiers

Texas Instruments LMP860x/LMP860x-Q1 60V Fixed Gain Current Sensing Precision Amplifiers amplify and filter small differential signals in the presence of high common-mode voltages. The input common-mode voltage range of these devices 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. Texas Instruments LMP860x/LMP860x-Q1 fixed gain current sensing precision amplifiers are members of the LMP® family and are ideal for use in unidirectional and bidirectional current sensing applications. The LMP8602/LMP8602-Q1 has a precise gain of 50x, while the LMP8603/LMP8603-Q1 has a precise gain of 100x. These precise gain figures can drive an ADC to its full-scale value in most targeted applications. The LMP8602-Q1 and LMP8603-Q1 incorporate enhanced manufacturing and support processes for the automotive market, including defect detection methodologies.

Features

  • Gain = 20x for LMP8601 and LMP8601-Q1
  • Gain = 50x for LMP8602 and LMP8602-Q1
  • Gain = 100x for LMP8603 and LMP8603-Q1
  • 10µV/°C maximum TCVOS
  • 90dB minimum CMRR
  • 1mV maximum input offset voltage
  • CMVR at VS = 3.3V: –4V to 27V
  • CMVR at VS = 5V: –22V to 60V
  • Single-supply bidirectional operation
  • All minimum and maximum limits are 100% tested
  • Q1 devices qualified for automotive applications
  • Q1 devices ACE-Q100 qualified with the following results
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
    • Device temperature grade 0: –40°C to 150°C (LMP8601EDRQ1 only)
    • Device HBM ESD classification level 2 (3A on inputs)
    • Device CDM ESD classification level C6
    • Device MM ESD classification level M2

Applications

  • 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

Functional Block Diagram

Block Diagram - Texas Instruments LMP860x/LMP860x-Q1 60V Current Sensing Amplifiers
Paskelbta: 2012-03-05 | Atnaujinta: 2022-03-11