SBOS808E August   2016  – December 2021 INA240-Q1

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Amplifier Input Signal
        1. 8.3.1.1 Enhanced PWM Rejection Operation
        2. 8.3.1.2 Input Signal Bandwidth
      2. 8.3.2 Selecting the Sense Resistor (RSENSE)
    4. 8.4 Device Functional Modes
      1. 8.4.1 Adjusting the Output Midpoint With the Reference Pins
      2. 8.4.2 Reference Pin Connections for Unidirectional Current Measurements
        1. 8.4.2.1 Ground Referenced Output
        2. 8.4.2.2 VS Referenced Output
      3. 8.4.3 Reference Pin Connections for Bidirectional Current Measurements
        1. 8.4.3.1 Output Set to External Reference Voltage
        2. 8.4.3.2 Output Set to Midsupply Voltage
        3. 8.4.3.3 Output Set to Mid-External Reference
        4. 8.4.3.4 Output Set Using Resistor Divider
      4. 8.4.4 Calculating Total Error
        1. 8.4.4.1 Error Sources
        2. 8.4.4.2 Reference Voltage Rejection Ratio Error
          1. 8.4.4.2.1 Total Error Example 1
          2. 8.4.4.2.2 Total Error Example 2
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Input Filtering
    2. 9.2 Typical Applications
      1. 9.2.1 Inline Motor Current-Sense Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curve
      2. 9.2.2 Solenoid Drive Current-Sense Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curve
    3. 9.3 What to Do and What Not to Do
      1. 9.3.1 High-Precision Applications
      2. 9.3.2 Kelvin Connection from the Current-Sense Resistor
  10. 10Power Supply Recommendations
    1. 10.1 Power Supply Decoupling
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Connection to the Current-Sense Resistor
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Support Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.5 Electrical Characteristics

at TA = 25 °C, VS = 5 V, VSENSE = VIN+ – VIN–, VCM = 12 V, and VREF1 = VREF2 = VS / 2 (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT
VCMCommon-mode input rangeVIN+ = –4 V to 80 V, VSENSE = 0 mV
TA = – 40°C to 125°C		–480V
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1–480
CMRRCommon-mode rejection ratioVIN+ = –4 V to 80 V, VSENSE = 0 mV
TA = –40°C to 125°C		120132dB
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1120132
f = 50 kHz93
VOSOffset voltage, input-referredVSENSE = 0 mV±5±25µV
dVOS/dTOffset voltage driftVSENSE = 0 mV, TA = –40°C to 125°C±50±250nV/°C
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1±50±250
PSRRPower-supply rejection ratioVS = 2.7 V to 5.5 V, VSENSE = 0 mV
TA = –40°C to 125°C		±1±10µV/V
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1±1±10
IBInput bias currentIB+, IB–, VSENSE = 0 mV90µA
Reference input range0VSV
OUTPUT
GGainINA240A1-Q120V/V
INA240A2-Q150
INA240A3-Q1100
INA240A4-Q1200
Gain errorGND + 50 mV ≤ VOUT ≤ VS – 200 mV±0.05%±0.20%
TA = –40°C to 125°C±0.5±2.5ppm/°C
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1±0.5±2.5
Nonlinearity errorGND + 10 mV ≤ VOUT ≤ VS – 200 mV±0.01%
Reference divider accuracyVOUT = | (VREF1 – VREF2) | / 2 at VSENSE = 0 mV, TA = –40°C to 125°C0.02%0.1%
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ10.02%0.1%
RVRRReference voltage rejection ratio
(input-referred)		INA240A1-Q120µV/V
INA240A3-Q15
INA240A2-Q1, INA240A4-Q12
Maximum capacitive loadNo sustained oscillation1nF
VOLTAGE OUTPUT(2)
Swing to VS power-supply railRL = 10 kΩ to GND
TA = –40°C to 125°C		VS – 0.05VS – 0.2V
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1VS – 0.05VS – 0.2
Swing to GNDRL = 10 kΩ to GND, VSENSE = 0 mV
VREF1 = VREF2 = 0 V
TA = –40°C to 125°C		VGND + 1VGND + 10mV
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1VGND + 1VGND + 10
FREQUENCY RESPONSE
BWBandwidthAll gains, –3-dB bandwidth400kHz
All gains, 2% THD+N(1)100
Settling time - output settles to 0.5% of final valueINA240A1-Q19.6µs
INA240A4-Q19.8
SRSlew rate2V/µs
NOISE (INPUT REFERRED)
Voltage noise density40nV/√ Hz
POWER SUPPLY
VSOperating voltage rangeTA = –40°C to 125°C2.75.5V
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ12.75.5
IQQuiescent currentVSENSE = 0 mV1.82.4mA
IQ vs temperature,
TA = –40°C to 125°C		2.6
TA = – 40°C to 150°C, INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ12.6
TEMPERATURE RANGE
Specified range–40125°C
INA240A1EDRQ1, INA240A2EDRQ1, INA240A3EDRQ1, INA240A4EDRQ1–40150
(1) See the Section 8.3.1.2 section for more details.
(2) See Figure 7-13.