INA253 80V, Low-/High-Side, Bi-Directional, CSA w/PWM Rejection & Precision Integrated Shunt Resistor | TI.com

INA253 (ACTIVE)

80V, Low-/High-Side, Bi-Directional, CSA w/PWM Rejection & Precision Integrated Shunt Resistor

80V, Low-/High-Side, Bi-Directional, CSA w/PWM Rejection & Precision Integrated Shunt Resistor - INA253
 

Sample Availability

Prototype samples are available. Order Now

Description

The INA253 is a voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253 is designed to monitor bi-directional currents over a wide command mode range from
–4 V to 80 V, independent of the supply voltage. Three fixed gains are available: 100 mV/A, 200 mV/A, and 400 mV/A. The integration of the precision resistor with a zero-drift chopped amplifier provides calibration equivalent measurement accuracy, ultra-low temperature drift performance of 15 ppm/°C, and an optimized Kelvin layout for the sensing resistor.

The INA253 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals to enable real time continuous current measurements. The measurements are critical for in-line current measurements in a motor drive application and for Solenoid valve control applications.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 3 mA of supply current. All gain versions are specified over the extended operating temperature range (–40°C to 125°C) and are available in an 20-pin TSSOP package.

Features

  • Precision Integrated Shunt Resistor
    • Shunt Resistor: 2 mΩ
    • Shunt Inductance: 3 nH
    • Shunt Resistor Tolerance: 0.1% (Max)
    • ±15 A Continuous from – 40°C to 85°C
    • 0°C to 125°C Temperature Coefficient:
      10 ppm/°C
  • Higher –3 dB Bandwidth of 380 Khz
  • Enhanced PWM rejection
  • Excellent CMRR
    • >120-dB DC CMRR
    • 90-dB AC CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain Error: 0.75% (Max)
      • Gain Drift: 45 ppm/°C (Max)
    • Offset:
      • Offset Current: ±12.5 mA (Max)
      • Offset Drift: 125 µA/°C (Max)
  • Wide Common-Mode Range: –4 V to 80 V
  • Available Gains: 100 mV/A, 200 mV/A,
    and 400 mV/A
  • Quiescent Current: 3 mA (Max)

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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)
INA253 INA250
80     36    
-4     0    
12.5
mA    
100
50
30
20
mA    
125µA/C     250 µA/C    
100
200
400
mV/A    
200
2000
500
800
mV/A    
0.2     0.3    
10     45    
120     100    
380     50    
5.5     36    
2.7     2.7    
3.5     0.35    
1     1    
Bi-directional
Enhanced PWM Rejection
Integrated Shunt
Low-side Capable    
Bi-directional
Integrated Shunt
Low-side Capable    
Catalog     Catalog    
-40 to 125     -40 to 125    
TSSOP | 20     TSSOP | 16    
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)    

INA253 Error Analysis

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