INA186-Q1 Automotive, 40V, low- and high-side current sense amplifier with picoamp bias current | TI.com

INA186-Q1
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Automotive, 40V, low- and high-side current sense amplifier with picoamp bias current

 

Description

The INA186-Q1 is an automotive, bidirectional, 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 an SC70 package.

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 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 (typ)
  • Low power:
    • Low supply voltage, VS: 1.7 V to 5.5 V
    • Low quiescent current, IQ: 48 µA (typ)
  • Accuracy:
    • Gain error, EG: ±1% (max)
    • Gain drift: 10 ppm/°C (max)
    • Offset voltage, VOS: ±50 µV (max)
    • Offset drift: 0.5 µV/°C (max)
  • 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

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INA186-Q1 Error Analysis guide
0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
1.7 ≤ 
V ≤ 5.5
-0.2 ≤ 
V ≤ 40
-40 ≤ 
C ≤ 125
X Scale:

Parametrics

Compare all products in Current sense amplifiers analog output Email Download to Excel
Part number Order Common mode voltage (Max) (V) Common mode voltage (Min) (V) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Typ) (uV/C) Gain (V/V) Gain error (%) Gain error drift (+/-) (Max) (ppm/°C) CMRR (Min) (dB) Bandwidth (kHz) Supply voltage (Max) (V) Supply voltage (Min) (V) Iq (Max) (mA) Number of channels (#) Comparators (#) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA186-Q1 Order now 40     -0.2     50     0.05     100
200
25
50
500    
0.9     10     120     45
37
35
32
27    
5.5     1.7     0.09     1       Bi-directional
Low-side Capable    
Automotive     -40 to 125     SC70 | 6     6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)    
INA190-Q1 Order now 40     -0.2     15     0.01     100
200
25
50
500    
0.2
0.3
0.4    
7     132     45
37
35
32
27    
5.5     1.7     0.09     1     0     Bi-directional
Low-side Capable    
Automotive     -40 to 125     SC70 | 6     6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)    
INA199-Q1 Order now 26     -0.3     150     0.1     100
200
50    
1.5
1    
10     100     80
30
14    
26     2.7     0.115     1     0     Bi-directional
Low-side Capable    
Automotive     -40 to 125     SC70 | 6     6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)    
INA210-Q1 Order now 26     -0.3     35
60
100