SBOSAK2A May   2025  – September 2025 INA187

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Amplifier Input Common-Mode Signal
      2. 6.3.2 Low Input Bias Current
      3. 6.3.3 Low VSENSE Operation
      4. 6.3.4 Wide Fixed Gain Output
      5. 6.3.5 Wide Supply Range
    4. 6.4 Device Functional Modes
      1. 6.4.1 Adjusting the Output With the Reference Pin
      2. 6.4.2 Reference Pin Connections for Unidirectional Current Measurements
        1. 6.4.2.1 Ground Referenced Output
        2. 6.4.2.2 VS Referenced Output
      3. 6.4.3 Reference Pin Connections for Bidirectional Current Measurements
        1. 6.4.3.1 Output Set to External Reference Voltage
        2. 6.4.3.2 Output Set to Mid-Supply Voltage
  8. 7 Application and Implementation
    1. 7.1 Application Information
      1. 7.1.1 RSENSE and Device Gain Selection
    2. 7.2 Typical Application
      1. 7.2.1 Low-side Current Sensing in Motor Application
        1. 7.2.1.1 Design Requirements
        2. 7.2.1.2 Detailed Design Procedure
        3. 7.2.1.3 Application Performance Plots
    3. 7.3 Power Supply Recommendations
      1. 7.3.1 Power Supply Decoupling
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Examples
  9. 8 Device and Documentation Support
    1. 8.1 Documentation Support
      1. 8.1.1 Related Documentation
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information
    1. 10.1 Mechanical Data

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • DBV|6
Thermal pad, mechanical data (Package|Pins)
Orderable Information

5.5 Electrical Characteristics

at TA = 25 °C, VS = 5V, VREF = VS / 2, VSENSE = 0V, VCM = VIN- =  24V, (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT
VCM Common-mode input range(1) TA = -40°C to +125°C –2 42 V
CMRR Common-mode rejection ratio,
input referred		 2.5V < VCM < 42V, 
 		 110 120 dB
0V < VCM < 42V, 
 		 80 90
-2V < VCM ≤ 2.5V, 
 		 65
f = 50kHz, VCM = 12V 65
Vos Offset voltage, input referred VCM = 2.5V –150 150 µV
VCM = 2.5V, TA = -40°C to +125°C –200 200
dVos/dT Offset voltage drift VCM = 2.5V ±0.5 µV/℃
PSRR Power supply rejection ratio, input referred VCM = 2.5V, 2.7V ≤ VS ≤ 12V, VREF = 1V
TA = -40°C to +125°C		 ±6 µV/V
IB Input bias current IB+, IB-, VCM = 2.5V, VSENSE = 0V 13 ± 21 µA
IB+, IB-, VCM = 2.5V, VSENSE = 0V, 
TA = -40°C to +125°C		 ±28
Reference input range 0 VS V
RVRR Reference voltage rejection ratio,
input referred		 VREF= 0.5V to 4.5V, 
TA = –40°C to +125°C		 ±5 ±20
µV/V
OUTPUT
G Gain INA187A1 20 V/V
INA187A2 50
INA187A3 100
GERR Gain error VCM = 2.5V, 
(GND + 50mV) < VOUT < (VS - 200mV)		 ±0.25 %
Gain error drift VCM = 2.5V, TA = -40°C to +125°C, 
(GND + 50mV) < VOUT < (VS - 200mV)		 10 ppm/°C
NLERR Nonlinearity error VOUT = 0.5V to 4.5V, VCM = 12V 0.01 %
Maximum capacitive load No sustained oscillations, no isolation resistor 500 pF
VOLTAGE OUTPUT
Swing to Vs (Power supply rail) VCM = 2.5V, RL = 10kΩ to GND 4.9 V
Swing to ground VCM = 2.5V, RL = 10kΩ to GND 80 mV
FREQUENCY RESPONSE
BW Bandwidth INA187A1 650 kHz
INA187A2 500
INA187A3 400
Settling time VOUT = 0.5V to 4.5V step,
Output settles to 1%		 6.5 µs
VOUT = 0.5V to 4.5V step,
Output settles to 5%		 3
SR Slew rate INA187A1, VSENSE = ±100mV, 
INA187A2, VSENSE = ±40mV,
INA187A3, VSENSE = ±20mV, 		 2.5 V/µs
NOISE
Ven Voltage noise density f > 10kHz 117 nV/√Hz
POWER SUPPLY
IQ Quiescent current VCM = 2.5V 450 600 µA
VCM = 2.5V, TA = -40°C to +125°C 650 µA
VCM = -2V 950 1100 µA
VCM = -2V, TA = -40°C to +125°C 1200 µA
TA Specified Range –40 125 °C
(1) Common-mode voltage at both VIN+ and VIN- must not exceed the specified common-mode input range.