INA190 40V, Bi-Directional, Low-/High-Side, Zero-Drift, Voltage Output CSA w/low bias current and enable | TI.com

INA190 (ACTIVE)

40V, Bi-Directional, Low-/High-Side, Zero-Drift, Voltage Output CSA w/low bias current and enable

 

Description

The INA190 series of devices are voltage-output, current-shunt monitors (also called current-sense amplifiers). These devices are commonly used for overcurrent protection, precision current measurement for system optimization, or in closed-loop feedback circuits. This series of devices can sense drops across shunts at common-mode voltages from –0.2 V to +40 V, independent of the supply voltage. Five fixed gains are available: 25 V/V, 50 V/V, 100 V/V, 200 V/V, or 500 V/V. The low input bias current of the INA190 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.

These devices operate from a single 1.7-V to 5.5-V power supply, and draw a maximum of 65 µA of supply current when enabled; only 0.1 µA when disabled. All versions are specified over the extended operating temperature range of –40°C to +125°C, and offered in a UQFN package.

Features

  • Low Supply Voltage, VVS: 1.7 V to 5.5 V
  • Wide Common-Mode Voltage: –0.2 V to +40 V
  • Low Shutdown Current: 100 nA (Max)
  • Low Input Bias Currents: 500 pA (Typ)
    (Enables Microamp Current Measurement)
  • Low Offset Voltage, VOS: ±15 µV (Max)
  • Accuracy:
    • Gain Error: ±0.2% (A1 Devices)
    • Offset Drift: 0.13-µV/°C (Max)
    • Gain Drift: 5-ppm/°C (Max)
  • Gain Options:
    • INA190A1: 25 V/V
    • INA190A2: 50 V/V
    • INA190A3: 100 V/V
    • INA190A4: 200 V/V
    • INA190A5: 500 V/V
  • Quiescent Current: 50 µA at 25°C (Typ)
  • Package: 1.8-mm x 1.4-mm UQFN-10

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Parametrics Compare all products in Current sense amplifiers analog output

 
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 (#)
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
INA190 INA199 INA210
40     26     26    
-0.1     -0.1     -0.3    
15     150     35
60
100    
0.05     0.1     0.1    
100
200
25
50
500    
50     100
1000
200
50
500
75    
0.2
0.3
0.4    
1.5
1    
0.5
1.0    
5     10     10    
132     100     105    
45
37
35
32
27    
80
30
14    
80
40
30
14
7
4    
5.5     26     26    
1.7     2.7     2.7    
0.09     0.115     0.115    
1     1     1    
Bi-directional
Low-side Capable    
Bi-directional
Low-side Capable    
Bi-directional
Low-side Capable    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
UQFN | 10     SC70 | 6
UQFN | 10    
SC70 | 6
UQFN | 10    
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)     6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)    
6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)    

Design tool

INA190 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125