INA253-Q1 AEC-Q100, 80V, low-/high-side, bi-dir, CSA w/PWM rejection & precision integrated shunt resistor | TI.com

INA253-Q1
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AEC-Q100, 80V, low-/high-side, bi-dir, CSA w/PWM rejection & precision integrated shunt resistor

 

Description

The INA253-Q1 is an automotive, voltage-output, current sense amplifier with an integrated shunt resistor of 2 mΩ. The INA253-Q1 monitors bidirectional currents over a wide common-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-Q1 is designed with enhanced PWM rejection circuitry to suppress large (dv/dt) signals that 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 operating temperature range of –40°C to +125°C, and are available in a 20-pin TSSOP package.

Features

  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • 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
  • High bandwidth: 350 kHz
  • Enhanced PWM rejection
  • Excellent CMRR
    • > 120-dB dc CMRR
    • 90-dB ac CMRR at 50 kHz
  • Accuracy:
    • Gain:
      • Gain error: 0.4% (max)
      • Gain drift: 45 ppm/°C (max)
    • Offset:
      • Offset current: ±15 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: 2.4 mA (max)

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INA253-Q1 Error Analysis guide
0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 5.5
-4 ≤ 
V ≤ 80
-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)
INA253-Q1 Order now 80     -4     12.5mA     125uA/C     100mV/A
200mV/A
400mV/A    
0.4     45     120     350     5.5     2.7     2.6     1     0     Bi-directional
Enhanced PWM Rejection
Integrated Shunt
Low-side Capable    
Automotive     -40 to 125     TSSOP | 20     20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
INA240-Q1 Order now 80     -4     25     0.05     100
20
200
50    
0.2     2.5     120     400     5.5     2.7     2.6     1     0     Bi-directional
Enhanced PWM Rejection
Low-side Capable    
Automotive     -40 to 150
-40 to 125    
SOIC | 8
TSSOP | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)    
INA250-Q1 Order now 36     0     100mA
50mA
30mA
20mA    
250uA/C     2000mV/A
200mV/A
500mV/A
800mV/A    
0.3     45     100     50     36     2.7     0.35     1     0     Bi-directional
Integrated Shunt
Low-side Capable    
Automotive     -40 to 125     TSSOP | 16