SBOS945B November   2020  – April 2021 INA849

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  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. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Adjustable Gain Setting
      2. 8.3.2 Gain Drift
      3. 8.3.3 Wide Input Common-Mode Range
    4. 8.4 Device Functional Modes
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Reference Pin
      2. 9.1.2 Input Bias Current Return Path
      3. 9.1.3 Thermal Effects due to Power Dissipation
    2. 9.2 Typical Application
      1. 9.2.1 Sensor Conditioning Circuit
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
      2. 9.2.2 Phantom Power in Microphone Preamplifier Circuit
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    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

Typical Characteristics

at TA = 25°C, VS = ±15 V, VCM at mid-supply, VRL = 10 kΩ, connected to ground, VREF = 0 V, and G = 1 (unless otherwise noted)

GUID-20201026-CA0I-48P6-VKJP-1VR6S0S4L9JC-low.svg
N = 1695, mean = 0.26 µV, std dev = 5.85 µV
Figure 7-1 Typical Distribution of Input Offset Voltage
GUID-20201026-CA0I-FPC7-MFDL-6HC2NR7RPDTK-low.svg
N = 1695, mean = -43.83 µV, std dev = 111.74 µV
Figure 7-3 Typical Distribution of Output Offset Voltage
GUID-20201019-CA0I-0MXZ-FQWW-XVBXBHCB86KL-low.svg
N = 120, mean = 7.58 nA, std dev = 1.84 nA
Figure 7-5 Typical Distribution of Input Bias Current
GUID-20201019-CA0I-Q4V8-MX86-W0TKQGNDTXBB-low.svg
N = 120, mean = -0.11 nA, std dev = 1.01 nA
Figure 7-7 Typical Distribution of Input Offset Current
GUID-20201019-CA0I-5XZK-VSXB-P9NZPWB5LS71-low.svg
N = 120, mean = -0.375 µV/V, std dev = 0.043 µV/V
Figure 7-9 Typical CMRR Distribution G = 100
GUID-20201027-CA0I-SDCR-340L-SC9TMGS2LZMH-low.svg
N = 120
Figure 7-11 Output Stage Offset Voltage vs Temperature
GUID-20201019-CA0I-LJR5-SMJL-BBPWCDN6J0VS-low.svg
 
Figure 7-13 Output-referred Offset Voltage vs Negative Input Common-Mode Voltage
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Figure 7-15 Positive Input Bias Current vs Input Common-Mode Voltage
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Figure 7-17 Input Offset Current vs Input Common-Mode Voltage
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Figure 7-19 Input Offset Current vs Temperature
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Figure 7-21 CMRR vs Frequency (1-kΩ source imbalance)
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Figure 7-23 Negative PSRR vs Frequency (RTI)
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Figure 7-25 Current Noise Spectral Density vs Frequency (RTI)
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 G = 1000
Figure 7-27 0.1-Hz to 10-Hz RTI Voltage Noise
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G = 1
Figure 7-29 Gain Nonlinearity vs Output Voltage
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Figure 7-31 Closed-Loop Gain vs Frequency
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Figure 7-33 Large-Signal Frequency Response
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G = 1, CL = 100 pF 
Figure 7-35 Small-Signal Step Response at G = 1
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G = 100, CL = 100 pF 
Figure 7-37 Small-Signal Step Response at G = 100
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G = 1 VSTEP = 10 V
Figure 7-39 Settling Time for G = 1
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G = 1000 VSTEP = 10 V
Figure 7-41 Settling Time for G = 1000
GUID-20210413-CA0I-TLRS-BTMP-LBM18HQLBSHL-low.png
 
Figure 7-43 Total Harmonic Distortion vs Frequency at Different Loads
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Figure 7-45 Third Harmonic Distortion vs Frequency
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N = 30, mean = 0.10 µV/°C, std dev = 0.08 µV/°C
Figure 7-2 Typical Distribution of Input Offset Voltage Drift
GUID-20201209-CA0I-JRJX-1DJX-57KHPL0TNVKC-low.svg
N = 120, mean = -4.14 µV/°C, std dev = 2.00 µV/°C
Figure 7-4 Typical Distribution of Output Offset Voltage Drift
GUID-20201019-CA0I-ZZ9L-JHFC-QSSNPKV9X66G-low.svg
N = 120, mean = 7.24 nA, std dev = 1.80 nA
Figure 7-6 Typical Distribution of Input Bias Current at 85°C
GUID-20201019-CA0I-NRGJ-KZKZ-N5KP44GWTCCD-low.svg
N = 120, mean = 3.08 µV/V, std dev = 5.57 µV/V
Figure 7-8 Typical CMRR Distribution G = 1
GUID-20201027-CA0I-BZ2G-QGF2-6FF23F6WTR6Z-low.svg
N = 120
Figure 7-10 Input Stage Offset Voltage vs Temperature
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VREF = 0 V
Figure 7-12 Boundary Plot - Input Common-Mode Voltage vs Output Voltage
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Figure 7-14 Output-referred Offset Voltage vs Positive Input Common-Mode Voltage
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Figure 7-16 Negative Input Bias Current vs Input Common-Mode Voltage
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Figure 7-18 Input Bias Current vs Temperature
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Figure 7-20 CMRR vs Frequency (RTI)
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Figure 7-22 Positive PSRR vs Frequency (RTI)
GUID-20201020-CA0I-BMHF-TLNZ-9L0XV1FGCGDF-low.svg
 
Figure 7-24 Voltage Noise Spectral Density vs Frequency (RTI)
GUID-20201202-CA0I-Z2ZD-H1R1-3F07W4JFTKJL-low.svg
 G = 1
Figure 7-26 0.1-Hz to 10-Hz RTI Voltage Noise
GUID-20201202-CA0I-4Q3J-P2CL-SMG3TCTP8SSB-low.svg
 
Figure 7-28 0.1-Hz to 10-Hz RTI Current Noise
GUID-20201209-CA0I-CPHN-K9KS-RKMSZ42LQ4LB-low.svg
G = 10
Figure 7-30 Gain Nonlinearity vs Output Voltage
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Figure 7-32 Closed-Loop Output Impedance vs Frequency
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Figure 7-34 Overshoot vs Capacitive Loads
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G = 10, CL = 100 pF 
Figure 7-36 Small-Signal Step Response at G = 10
GUID-20201209-CA0I-VJQM-SR66-RS4CJLFL0KLF-low.svg
G = 1000, CL = 100 pF 
Figure 7-38 Small-Signal Step Response at G = 1000
GUID-20201207-CA0I-CR00-VB4P-BNCPVKQWGR6F-low.svg
G = 100 VSTEP = 10 V
Figure 7-40 Settling Time for G = 100
GUID-20210413-CA0I-JM2C-3G0G-3FBPCLZ1BRTK-low.png
 
Figure 7-42 Total Harmonic Distortion vs Frequency
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Figure 7-44 Second Harmonic Distortion vs Frequency
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Figure 7-46 Supply Current vs Temperature