• INA186A1QDCKRQ1 SC70-6
INA186A1QDCKRQ1 SC70-6

INA186A1QDCKRQ1

Current Sense Amplifiers AEC-Q100, 40-V, bidirectional, high-precision current sense amplifier w/ picoamp input bias & ENABLE 6-SC70 -40 to 125

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Overview of INA186A1QDCKRQ1

The INA186-Q1 is an automotive, low-power, voltage-output, current-sense amplifier (also called a current-shunt monitor). This device is commonly used for monitoring systems directly connected to an automotive 12-V battery. The INA186-Q1 can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. In addition, the input pins have an absolute maximum voltage of 42V.

The low input bias current of the INA186-Q1 permits the use of larger current-sense resistors, thus providing accurate current measurements in the microamp range. The low offset voltage of the zero-drift architecture extends the dynamic range of the current measurement. This feature allows for smaller sense resistors with lower power loss, while still providing accurate current measurements.

The INA186-Q1 operates from a single 1.7-V to 5.5-V power supply, and draws a maximum of 90 µA of supply current . Five fixed gain options are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The device is specified over the operating temperature range of –40°C to +125°C, and offered in SC70, SOT-23 (5), and SOT-23 (8) packages. The SC70 and SOT-23 (DDF) packages supports bidirectional current measurement, whereas the SOT-23 (DBV) only supports current measurement in one direction.

INA186A1QDCKRQ1

Key Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Wide common-mode voltage range, VCM: –0.2 V to +40 V with survivability up to 42 V (recommended for automotive 12-V battery applications)
  • Low input bias currents, IIB: 500 pA (typical)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typical)
  • Accuracy:
    • Common-mode rejection ratio: 120 dB (minimum)
    • Gain error, EG: ±1% (maximum)
    • Gain drift: 10 ppm/°C (maximum)
    • Offset voltage, VOS: ±50 µV (maximum)
    • Offset drift: 0.5 µV/°C (maximum)
  • Bidirectional current sensing capability
  • Gain options:
    • INA186A1-Q1: 25 V/V
    • INA186A2-Q1: 50 V/V
    • INA186A3-Q1: 100 V/V
    • INA186A4-Q1: 200 V/V
    • INA186A5-Q1: 500 V/V

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product type Analog output Common-mode voltage (max) (V) 40
Common-mode voltage (min) (V) -0.2 Input offset (±) (max) (µV) 50
Input offset drift (±) (typ) (µV/°C) 0.05 Voltage gain (V/V) 25, 50, 100, 200, 500
CMRR (min) (dB) 120 Bandwidth (kHz) 27, 33, 35, 37, 45
Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 1.7
Iq (max) (mA) 0.09 Number of channels 1
Comparators (#) 0 Gain error (%) 1
Gain error drift (±) (max) (ppm/°C) 10 Slew rate (V/µs) 0.3
Features Bidirectional, High precision, Low-side Capable Rating Automotive
TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125

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Warranty, Returns, and Additional Information

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    Parts Quality Guarantee: 365 days

    Returns for refund: within 90 days

    Returns for Exchange: within 90 days

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