SBOS925A December   2020  – January 2021 OPA391

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Low Input Bias Current
      2. 7.3.2 Input Differential Voltage
      3. 7.3.3 Capacitive Load Drive
      4. 7.3.4 EMI Rejection
    4. 7.4 Device Functional Modes
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Three-Terminal CO Gas Sensor
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 4-mA to 20-mA Loop Design
        1. 8.2.2.1 Application Curve
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI™ Simulation Software (Free Download)
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, 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 = 5.0 V, VCM = VS / 2, RLOAD = 10 kΩ connected to VS / 2, and CL = 100 pF (unless otherwise noted)

GUID-20201116-CA0I-DBDQ-SBRP-GBHMJDNPZZ0G-low.gif
 
Figure 6-1 Offset Voltage Distribution
GUID-20210115-CA0I-NDFN-5XXG-0MRJ40QBZLMQ-low.gif
5 units
Figure 6-3 Offset Voltage vs Temperature
GUID-20210115-CA0I-S8VB-FWK0-XFZRVW7DBRPT-low.gif
30 units VS = 5.5 V
Figure 6-5 Offset Voltage vs Common-Mode Voltage
GUID-20210115-CA0I-NDBB-ZQXZ-8K4VNNF5KJBT-low.gif
RL = no load
Figure 6-7 Open-Loop Gain and Phase vs Frequency
GUID-20210126-CA0I-ZCDG-G3GP-QFJG1Z9JC8Q9-low.gif
VS = 1.7 V Common-mode voltage referenced to VS / 2
Figure 6-9 Input Bias Current vs Common-Mode Voltage
GUID-20210115-CA0I-VGDB-TZG6-MGQGKXKCHLXD-low.gif
VS = 5.5 V Common-mode voltage referenced to VS / 2
Figure 6-11 Input Bias Current vs Common-Mode Voltage
GUID-20210115-CA0I-MVNX-F7GZ-M02BTNHNJZ4H-low.gif
 
Figure 6-13 Negative Input Bias Current Distribution
GUID-20210115-CA0I-NQTF-3DZH-G11PZRCVWXFC-low.gif
 
Figure 6-15 Input Bias Current vs Temperature
GUID-20210115-CA0I-KWVB-6CSL-Q5TB6BXH3CMT-low.gif
 
Figure 6-17 Output Voltage Swing vs Output Current
(Maximum Supply)
GUID-20210115-CA0I-MNMM-PZTQ-R50DQCSDTTGN-low.gif
5 units
Figure 6-19 CMRR vs Temperature
GUID-20210115-CA0I-2P5P-P5FP-S16KWDS5FRTK-low.gif
 
Figure 6-21 0.1-Hz to 10-Hz Noise
GUID-20210115-CA0I-3Z1L-T9KP-NGBLMGFKS98X-low.gif
VOUT = 1 VRMS
Figure 6-23 THD+N Ratio vs Frequency
GUID-20210115-CA0I-6FPS-6W0B-VTHBFSMMKZP5-low.gif
5 units
Figure 6-25 Quiescent Current vs Supply Voltage
GUID-20210115-CA0I-2QLD-4XCQ-HXRXNXSFP1H0-low.gif
5 units
Figure 6-27 Open-Loop Gain vs Temperature
GUID-20210115-CA0I-90WP-H152-RWWP3KWBH5BG-low.gif
G = +1
Figure 6-29 Small-Signal Overshoot vs Capacitive Load
(10-mV Step)
GUID-20210115-CA0I-6TZL-M16N-56GX7C10LSJV-low.gif
 
Figure 6-31 No Phase Reversal
GUID-20210115-CA0I-PQ4V-P8PN-7695VRCXXCN3-low.gif
 
Figure 6-33 Negative Overload Recovery
GUID-20210119-CA0I-RNBC-0RNQ-F9RS4NCGFZZL-low.gif
G = –1
Figure 6-35 Small-Signal Step Response (10-mV Step)
GUID-20210115-CA0I-V9S3-VXHK-SWJZPWLLCRPW-low.gif
G = –1
Figure 6-37 Large-Signal Step Response (4-V Step)
GUID-20210115-CA0I-RV0Q-QDJX-5LQJN0P1J6QD-low.gif
 
Figure 6-39 Short-Circuit Current vs Temperature
GUID-20210115-CA0I-4XGV-FNM6-LTV545MNQR7V-low.gif
PRF = –10 dBm
Figure 6-41 EMIRR vs Frequency
GUID-20210115-CA0I-M7D7-KQ0M-KNHQLHCMPZRC-low.gif
45 units
Figure 6-2 Offset Voltage Drift Distribution (–40°C to +125°C)
GUID-20210115-CA0I-F0DM-FJHD-KD7Z5GWJFXMP-low.gif
5 units
Figure 6-4 Offset Voltage vs Common-Mode Voltage
GUID-20210115-CA0I-N2KD-4DBC-ZDVF6VTK5VMZ-low.gif
5 units VS = 5.5 V
Figure 6-6 Offset Voltage vs Supply Voltage
GUID-20210115-CA0I-RTMC-H94B-WCQTBMJPS4FK-low.gif
 
Figure 6-8 Closed-Loop Gain and Phase vs Frequency
GUID-20210126-CA0I-NG6G-PNGB-7TTFZXXC9QM9-low.gif
VS = 3.3 V Common-mode voltage referenced to VS / 2
Figure 6-10 Input Bias Current vs Common-Mode Voltage
GUID-20210115-CA0I-V0QN-VN6N-HZTZ9NP41FLR-low.gif
VS = 5.5 V Common-mode voltage referenced to VS / 2
Figure 6-12 Input Bias Current vs Common-Mode Voltage
GUID-20210115-CA0I-GPZQ-PKMF-3K3FR1CHGNZM-low.gif
 
Figure 6-14 Positive Input Bias Current Distribution
GUID-20210115-CA0I-R10B-BQ35-BF9584SM3HZZ-low.gif
 
Figure 6-16 Output Voltage Swing vs Output Current
(Maximum Supply)
GUID-20210115-CA0I-KXNH-BCQ8-38R3H9FV74TX-low.gif
 
Figure 6-18 PSRR vs Frequency
GUID-20210115-CA0I-FZ0R-RB7J-M4F1CMPKTGJT-low.gif
5 units
Figure 6-20 PSRR vs Temperature
GUID-20210115-CA0I-4XQQ-BBRB-6QPSMHDMGPVG-low.gif
 
Figure 6-22 Input Voltage Noise Spectral Density vs Frequency
GUID-20210115-CA0I-DBZC-DPCK-BPFZS07P4LFX-low.gif
f = 1 kHz Filter BW = 80 kHz
Figure 6-24 THD+N vs Output Amplitude
GUID-20210115-CA0I-RCS3-CMFW-LZF5N7WV8B69-low.gif
5 units
Figure 6-26 Quiescent Current vs Temperature
GUID-20210115-CA0I-WK6Q-8QF0-RT3CNQTMWLLD-low.gif
 
Figure 6-28 Open-Loop Output Impedance vs Frequency
GUID-20210115-CA0I-1CSZ-J4W4-F3JR9BGJPV4V-low.gif
G = –1
Figure 6-30 Small-Signal Overshoot vs Capacitive Load
(10-mV Step)
GUID-20210119-CA0I-HJCD-XPSH-4Z570SJJLGH3-low.gif
 
Figure 6-32 Positive Overload Recovery
GUID-20210115-CA0I-NNVT-KFBX-SH0TRFQKKP7C-low.gif
G = +1
Figure 6-34 Small-Signal Step Response (10-mV Step)
GUID-20210115-CA0I-SHGR-TXMP-QDQHB3GWQHZ8-low.gif
G = +1
Figure 6-36 Large-Signal Step Response (4-V Step)
GUID-20210115-CA0I-VVPP-BMRH-JWP0BKDKCKDP-low.gif
 
Figure 6-38 Settling Time (1-V Positive Step)
GUID-20210115-CA0I-RKZ0-NLCG-NFCCKLDKFX8B-low.gif
 
Figure 6-40 Maximum Output Voltage vs Frequency