SBOS485C November   2009  – May 2015 INA282 , INA283 , INA284 , INA285 , INA286

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Selecting RS
      2. 7.3.2 Effective Bandwidth
      3. 7.3.3 Transient Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Reference Pin Connection Options
        1. 7.4.1.1 Unidirectional Operation
          1. 7.4.1.1.1 Ground Referenced Output
          2. 7.4.1.1.2 V+ Referenced Output
        2. 7.4.1.2 Bidirectional Operation
          1. 7.4.1.2.1 External Reference Output
          2. 7.4.1.2.2 Splitting The Supply
          3. 7.4.1.2.3 Splitting an External Reference
      2. 7.4.2 Shutdown
      3. 7.4.3 Extended Negative Common-Mode Range
      4. 7.4.4 Calculating Total Error
        1. 7.4.4.1 Example 1
        2. 7.4.4.2 Example 2
  8. 8 Applications and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Basic Connections
    2. 8.2 Typical Applications
      1. 8.2.1 Current Summing
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Current Differencing
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6 Specifications

6.1 Absolute Maximum Ratings

Over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Supply voltage, V+ 18 V
Analog inputs, V+IN, V–IN(2) Differential (V+IN) – (V–IN)(3) –5 +5 V
Common-mode –14 +80 V
REF1, REF2, OUT GND – 0.3 (V+) + 0.3 V
Input current into any pin 5 mA
Junction temperature 150 °C
Storage temperature range, Tstg –65 +150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) V+IN and V–IN are the voltages at the +IN and –IN pins, respectively.
(3) Input voltages must not exceed common-mode rating.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
VCM Common-mode input voltage 12 V
V+ Operating supply voltage 5 V
TA Operating free-air temperature –40 +125 °C

6.4 Thermal Information

THERMAL METRIC(1) INA28x UNIT
D (SOIC) DGK (VSSOP)
8 PINS 8 PINS
RθJA Junction-to-ambient thermal resistance 134.9 164.1 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 72.9 56.4 °C/W
RθJB Junction-to-board thermal resistance 61.3 85.0 °C/W
ψJT Junction-to-top characterization parameter 18.9 6.5 °C/W
ψJB Junction-to-board characterization parameter 54.3 83.3 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance n/a n/a °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

At TA = 25°C, V+ = 5 V, V+IN = 12 V, VREF1 = VREF2 = 2.048 V referenced to GND, and VSENSE = V+IN – V–IN (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT
VOS Offset voltage, RTI(1) VSENSE = 0 mV ±20 ±70 µV
dVOS/dT vs temperature VSENSE = 0 mV,
TA = –40°C to +125°C		 ±0.3 ±1.5 µV/°C
PSRR vs power supply V+ = +2.7 V to +18 V,
VSENSE = 0 mV		 3 μV/V
VCM Common-mode input range TA = –40°C to +125°C –14 +80 V
CMRR Common-mode rejection ratio V+IN = –14 V to +80 V,
VSENSE = 0 mV,
TA = –40°C to +125°C		 120 140 dB
IB Input bias current per pin(2) VSENSE = 0 mV 25 µA
IOS Input offset current VSENSE = 0 mV 1 µA
Differential input impedance 6 kΩ
REFERENCE INPUTS
Reference input gain 1 V/V
Reference input voltage range(3) 0 VGND + 9 V
Divider accuracy(4) ±0.2% ±0.5%
RVRR Reference voltage
rejection ratio
 
(VREF1 = VREF2 = 40 mV to 9 V, V+ = 18 V)		 INA282 ±25 ±75 µV/V
TA = –40°C to +125°C 0.055 µV/V/°C
INA283 ±13 ±30 µV/V
TA = –40°C to +125°C 0.040 µV/V/°C
INA284 ±6 ±25 µV/V
TA = –40°C to +125°C 0.015 µV/V/°C
INA285 ±4 ±10 µV/V
TA = –40°C to +125°C 0.010 µV/V/°C
INA286 ±17 ±45 µV/V
TA = –40°C to +125°C 0.040 µV/V/°C
GAIN(5) (GND + 0.5 V ≤ VOUT ≤ (V+) – 0.5 V; VREF1 = VREF2 = (V+) / 2 for all devices)
G Gain INA282, V+ = 5 V 50 V/V
INA283, V+ = 5 V 200 V/V
INA284, V+ = 12 V 500 V/V
INA285, V+ = 12 V 1000 V/V
INA286, V+ = 5 V 100 V/V
Gain error INA282, INA283, INA286 ±0.4% ±1.4%
INA284, INA285 ±0.4% ±1.6%
TA = –40°C to +125°C 0.0008 0.005 %/°C
OUTPUT
Nonlinearity error ±0.01%
Output impedance 1.5 Ω
Maximum capacitive load No sustained oscillation 1 nF
VOLTAGE OUTPUT(6)
Swing to V+ power-supply rail V+ = 5 V, RLOAD = 10 kΩ to GND,
TA = –40°C to +125°C		 (V+) – 0.17 (V+) – 0.4 V
Swing to GND RLOAD = 10 kΩ to GND,
TA = –40°C to +125°C		 GND + 0.015 GND + 0.04 V
FREQUENCY RESPONSE
BW Effective bandwidth(7) INA282 10 kHz
INA283 10 kHz
INA284 4 kHz
INA285 2 kHz
INA286 10 kHz
NOISE, RTI(1)
Voltage noise density 1 kHz 110 nV/√Hz
POWER SUPPLY
VS Specified voltage range TA = –40°C to +125°C 2.7 18 V
IQ Quiescent current 600 900 µA
(1) RTI = referred-to-input.
(2) See typical characteristic graph Figure 7.
(3) The average of the voltage on pins REF1 and REF2 must be between VGND and the lesser of (VGND + 9 V) and V+.
(4) Reference divider accuracy specifies the match between the reference divider resistors using the configuration in Figure 36.
(5) See typical characteristic graph Figure 12.
(6) See typical characteristic graphs Figure 16 through Figure 18.
(7) See typical characteristic graph Figure 1 and the Effective Bandwidth section.

6.6 Typical Characteristics

At TA = 25°C, V+ = 5 V, V+IN = 12 V, VREF1 = VREF2 = 2.048 V referenced to GND, and VSENSE = V+IN – V–IN (unless otherwise noted)
INA282 INA283 INA284 INA285 INA286 tc_gain_fqcy_bos485.gif
Figure 1. Gain vs Frequency
INA282 INA283 INA284 INA285 INA286 tc_cmrr_284_bos485.gif
Figure 3. INA284 Common-Mode Rejection Ratio (RTI)
INA282 INA283 INA284 INA285 INA286 tc_zout_fqcy_286_bos485.gif
Figure 5. INA286 Output Impedance vs Frequency
INA282 INA283 INA284 INA285 INA286 tc_ibias_pos_vcm_283_bos485.gif
Figure 7. INA283 +IN Bias Current vs Common-Mode Voltage
INA282 INA283 INA284 INA285 INA286 tc_iq_vsupply_283_bos485.gif
Figure 9. Quiescent Current vs Supply Voltage
INA282 INA283 INA284 INA285 INA286 tc_iq_temp_283_bos485.gif
Figure 11. Quiescent Current vs Temperature
INA282 INA283 INA284 INA285 INA286 tc_ibias_pos_temp_283_bos485.gif
Figure 13. +IN Bias Current vs Temperature
INA282 INA283 INA284 INA285 INA286 tc_vnoise_fqcy_282_bos485.gif
Figure 15. INA282 Voltage Noise vs Frequency
INA282 INA283 INA284 INA285 INA286 tc_vswing_rail_iout_283_bos485.gif
Figure 17. INA283 Swing to Rail vs Output Current
INA282 INA283 INA284 INA285 INA286 tc_startup_25us_bos485.gif
Figure 19. Start-Up Transient Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_12v01_bos485.gif
Figure 21. 12-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_12v03_bos485.gif
Figure 23. 12-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_50v01_bos485.gif
Figure 25. 50-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_100mv_step_bos485.gif
Figure 27. 100-mV Step Response
INA282 INA283 INA284 INA285 INA286 tc_4v_step_bos485.gif
Figure 29. 4-V Step Response
INA282 INA283 INA284 INA285 INA286 tc_in_ovload_bos485.gif
Figure 31. Input Overload
INA282 INA283 INA284 INA285 INA286 tc_psrr_fqcy_bos485.gif
Figure 2. INA282 PSRR (RTI) vs Frequency
INA282 INA283 INA284 INA285 INA286 tc_vos_vcm_bos485.gif
Figure 4. INA282 Common-Mode Slew Rate Induced Offset
INA282 INA283 INA284 INA285 INA286 tc_nonlin_vout_282_bos485.gif
Figure 6. INA282 Typical Nonlinearity vs Output Voltage
INA282 INA283 INA284 INA285 INA286 tc_iq_vcm_283_bos485.gif
Figure 8. INA283 Quiescent Current vs Common-Mode Voltage
INA282 INA283 INA284 INA285 INA286 tc_cmrr_temp_283_bos485.gif
Figure 10. Common-Mode Rejection Ratio vs Temperature
INA282 INA283 INA284 INA285 INA286 tc_gain_temp_283_bos485.gif
Figure 12. Deviation in Gain vs Temperature
INA282 INA283 INA284 INA285 INA286 tc_vnoise_1_10hz_bos485.gif
Figure 14. INA282 0.1-Hz to 10-Hz Voltage Noise, RTI
INA282 INA283 INA284 INA285 INA286 tc_vswing_rail_iout_isc_284_bos485.gif
Figure 16. INA284 Output Voltage Swing vs Output Current
INA282 INA283 INA284 INA285 INA286 tc_vswing_gnd_iout_283_bos485.gif
Figure 18. INA283 Swing to Ground vs Output Current
INA282 INA283 INA284 INA285 INA286 tc_startup_250us_bos485.gif
Figure 20. Start-Up Transient Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_12v02_bos485.gif
Figure 22. 12-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_12v04_bos485.gif
Figure 24. 12-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_cm_step_50v02_bos485.gif
Figure 26. 50-V Common-Mode Step Response
INA282 INA283 INA284 INA285 INA286 tc_500mv_step_bos485.gif
Figure 28. 500-mV Step Response
INA282 INA283 INA284 INA285 INA286 tc_17v_step_bos485.gif
Figure 30. 17-V Step Response