INA214 26V, bi-directional, high-precision current sense amplifier | TI.com

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26V, bi-directional, high-precision current sense amplifier

26V, bi-directional, high-precision current sense amplifier - INA214
Datasheet
INA21x Voltage Output, Low- or High-Side Measurement, Bidirectional, Zero-Drift Series, Current-Shunt Monitors datasheet (Rev. J)
 

Description

The INA21x are voltage-output, current-shunt monitors (also called current-sense amplifiers) that 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 –0.3 V to 26 V, independent of the supply voltage. Six fixed gains are available: 50 V/V, 75 V/V, 100 V/V, 200 V/V, 500 V/V, or 1000 V/V. The low offset of the zero-drift architecture enables current sensing with maximum drops across the shunt as low as 10-mV full-scale.

These devices operate from a single 2.7-V to 26-V power supply, drawing a maximum of 100 µA of supply current. All versions are specified over the extended operating temperature range (–40°C to +125°C), and offered in SC70 and UQFN packages.

Features

  • Wide Common-Mode Range: –0.3 V to 26 V
  • Offset Voltage: ±35 µV (Maximum, INA210)(Enables Shunt Drops of 10-mV Full-Scale)
  • Accuracy:
    • Gain Error (Maximum Over Temperature):
      • ±0.5% (Version C)
      • ±1% (Versions A and B)
    • 0.5-µV/°C Offset Drift (Maximum)
    • 10-ppm/°C Gain Drift (Maximum)
  • Choice of Gains:
    • INA210: 200 V/V
    • INA211: 500 V/V
    • INA212: 1000 V/V
    • INA213: 50 V/V
    • INA214: 100 V/V
    • INA215: 75 V/V
  • Quiescent Current: 100 µA (Maximum)
  • SC70 and Thin UQFN Packages: All Models

INA214 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 26
-0.3 ≤ 
V ≤ 26
-40 ≤ 
C ≤ 125

Parametrics

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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)
INA214 Order now 26     -0.3     60     0.1     100     0.5
1.0    		 10     105     30     26     2.7     0.115     1     0     Bi-directional
Low-side Capable    		 Catalog     -40 to 125     SC70 | 6
UQFN | 10    		 6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)    
INA211 Order now 26     -0.3     35     0.1     500     0.5
1.0    		 10     105     7     26     2.7     0.115     1     0     Bi-directional
Low-side Capable    		 Catalog     -40 to 125     SC70 | 6
UQFN | 10    		 6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)    
INA212 Order now 26     -0.3     35     0.1     1000     0.5
1.0    		 10     105     4     26     2.7     0.115     1     0     Bi-directional
Low-side Capable    		 Catalog     -40 to 125     SC70 | 6
UQFN | 10    		 6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
10UQFN: 3 mm2: 1.4 x 1.8 (UQFN | 10)    
INA213 Order now 26     -0.3