INA240-Q1 (ACTIVE)

Automotive, High/Low Side, Bi-Directional Zerø-Drift Current Sense Amp w/ Enhanced PWM Rejection

 

Sampling

To request more information or pre-production samples, please email ina240requests@list.ti.com.

Description

The INA240-Q1 device is an automotive-qualified, voltage-output, current-sense amplifier with enhanced PWM rejection that can sense drops across shunt resistors over a wide common-mode voltage range from –4 V to 80 V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground, accommodating the flyback period of typical solenoid applications. Enhanced PWM rejection provides high levels of suppression for large common-mode transients (ΔV/Δt) in systems that use pulse width modulation (PWM) signals (such as motor drives and solenoid control systems). This feature allows for accurate current measurements without large transients and associated recovery ripple on the output voltage.

This device operates from a single 2.7-V to 5.5-V power supply, drawing a maximum of 2.4 mA of supply current. Four fixed gains are available: 20 V/V, 50 V/V, 100 V/V, and 200 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. Grade 1 versions are specified over the extended operating temperature range (–40°C to +125°C) and are offered in an 8-pin TSSOP and 8-pin SOIC packages.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C5
  • Enhanced PWM Rejection
  • Excellent CMRR:
    • 132-dB DC CMRR
    • 93-dB AC CMRR at 50 kHz
  • Wide Common-Mode Range: –4 V to 80 V
  • Accuracy:
    • Gain Error: 0.20% (Maximum) With 2.5 ppm/°C (Maximum Drift)
    • Offset Voltage: ±25 µV (Maximum) With 250 nV/°C (Maximum Drift)
  • Available Gains:
    • INA240A1-Q1: 20 V/V
    • INA240A2-Q1: 50 V/V
    • INA240A3-Q1: 100 V/V
    • INA240A4-Q1: 200 V/V

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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 (%)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Gain Error Drift (Max) (ppm/°C)
INA240-Q1 INA240 LMP8601 LMP8601-Q1
80    80    60    60   
-4    -4    -22    -22   
25    25    1000    1000   
0.05    0.05    2    2   
20
50
100
200   
20
50
100
200   
20
50
100   
20
50
100   
0.2    0.2    0.5    0.5   
120    120    90    90   
400    400    60    60   
5.5    5.5    5.5    5.5   
2.7    2.7    3    3   
2.6    2.6    1.5    1.5   
Bi-directional
Enhanced PWM Rejection
Low-side Capable   
Bi-directional
Enhanced PWM Rejection
Low-side Capable   
Bi-directional
Low-side Capable   
Bi-directional
Low-side Capable   
Automotive    Catalog    Catalog    Automotive   
-40 to 150
-40 to 125   
-40 to 125    -40 to 125    -40 to 125
-40 to 150   
SOIC
TSSOP   
SOIC
TSSOP   
SOIC    SOIC   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8TSSOP: 19 mm2: 6.4 x 3(TSSOP)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
8TSSOP: 19 mm2: 6.4 x 3(TSSOP)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)    8SOIC: 29 mm2: 6 x 4.9(SOIC)   
10    10    20    20   

Other qualified versions of INA240-Q1

Version Part Number Definition
Catalog INA240 TI's standard catalog product

INA240-Q1 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 5.5
-4 ≤ 
V ≤ 80
-40 ≤ 
C ≤ 125