ZHCSG76A April   2017  – March 2025 INA233

PRODUCTION DATA  

  1.   1
  2. 1 特性
  3. 2 应用
  4. 3 说明
  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 High-Accuracy Analog-to-Digital Convertor (ADC)
      2. 6.3.2 Interleaved Power Calculation
      3. 6.3.3 Power Accumulator and Energy Measurement
      4. 6.3.4 I2C-, SMBus-, and PMBus-Compatible Digital Interface
      5. 6.3.5 Multiple Fault Event Reporting
    4. 6.4 Device Functional Modes
      1. 6.4.1 Continuous Verses Triggered Operation
      2. 6.4.2 Device Shutdown
      3. 6.4.3 Averaging and Conversion Time Considerations
      4. 6.4.4 Filtering and Input Considerations
    5. 6.5 Programming
      1. 6.5.1 Default Settings
      2. 6.5.2 Calibration Register and Scaling
      3. 6.5.3 Reading and Writing Telemetry Data and Warning Thresholds
      4. 6.5.4 Reading Telemetry Data and Warning Thresholds
        1. 6.5.4.1 Writing Telemetry Data and Warning Thresholds
      5. 6.5.5 System-Level Calibration With MFR_CALIRATION Command
      6. 6.5.6 Bus Overview
        1. 6.5.6.1 Serial Bus Address
        2. 6.5.6.2 Serial Interface
        3. 6.5.6.3 Writing to and Reading From the INA233
          1. 6.5.6.3.1 Packet Error Checking
          2. 6.5.6.3.2 Bus Timing Requirements
        4. 6.5.6.4 SMBus Alert Response
    6. 6.6 Register Maps
      1. 6.6.1 PMBus Command Support
      2. 6.6.2 Standard PMBus Commands
        1. 6.6.2.1  CLEAR_FAULTS (03h)
        2. 6.6.2.2  RESTORE_DEFAULT_ALL (12h)
        3. 6.6.2.3  CAPABILITY (19h)
        4. 6.6.2.4  IOUT_OC_WARN_LIMIT (4Ah) [default = 01111111 11111000]
        5. 6.6.2.5  VIN_OV_WARN_LIMIT (57h) [default = 01111111 11111000]
        6. 6.6.2.6  VIN_UV_WARN_LIMIT (58h) [default = 00000000 00000000]
        7. 6.6.2.7  PIN_OP_WARN_LIMIT (6Bh) [default = 11111111 11110000]
        8. 6.6.2.8  STATUS_BYTE (78h)
        9. 6.6.2.9  STATUS_WORD (79h)
        10. 6.6.2.10 STATUS_IOUT (7Bh)
        11. 6.6.2.11 STATUS_INPUT (7Ch)
        12. 6.6.2.12 STATUS_CML (7Eh)
        13. 6.6.2.13 STATUS_MFR_SPECIFIC (80h)
        14. 6.6.2.14 READ_EIN (86h)
        15. 6.6.2.15 READ_VIN (88h)
        16. 6.6.2.16 READ_IIN (89h)
        17. 6.6.2.17 READ_VOUT (8Bh)
        18. 6.6.2.18 READ_IOUT (8Ch, R)
        19. 6.6.2.19 READ_POUT (96h, R)
        20. 6.6.2.20 READ_PIN (97h, R)
        21. 6.6.2.21 MFR_ID (99h)
        22. 6.6.2.22 MFR_MODEL (9Ah)
        23. 6.6.2.23 MFR_REVISION (9Bh)
      3. 6.6.3 Manufacturer-Specific PMBus Commands
        1. 6.6.3.1 MFR_ADC_CONFIG (D0h) [default = 01000001 00100111]
        2. 6.6.3.2 MFR_READ_VSHUNT (D1h) [default = 00000000 00000000]
        3. 6.6.3.3 MFR_ALERT_MASK (D2h) [default = XXXXXXXX 11110000]
        4. 6.6.3.4 MFR_CALIBRATION (D4h) [default = 00000000 00000001]
        5. 6.6.3.5 MFR_DEVICE_CONFIG (D5h) [default = 00000010]
        6. 6.6.3.6 5.1.1 CLEAR_EIN (D6h)
        7. 6.6.3.7 TI_MFR_ID (E0h) [value = 01010100 01001001]
        8. 6.6.3.8 TI_MFR_MODEL (E1h) [value = 00110011 00110011]
        9. 6.6.3.9 TI_MFR_REVISION (E2h) [value = 01000001 00110000]
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Programming the Calibration Register
        2. 7.2.2.2 Calculating PMBus Coefficients
        3. 7.2.2.3 Programming Warning Thresholds
        4. 7.2.2.4 Calculating Returned Telemetry Values
      3. 7.2.3 Application Curves
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 接收文档更新通知
    4. 8.4 支持资源
    5. 8.5 Trademarks
    6. 8.6 静电放电警告
    7. 8.7 术语表
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.5 Electrical Characteristics

at TA = 25°C, VVS = 3.3V, VIN+ = 12V, VSENSE = (VIN+ – VIN–) = 0mV, and VVBUS = 12V (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
INPUT
Shunt voltage input range–81.9281.9175mV
Bus voltage input range(1)036V
CMRRCommon-mode rejection ratio0V ≤ VIN+ ≤ 36V126140dB
VOSOffset voltage, RTI(2)Shunt voltage±2.5±10µV
Bus voltage±1.25±7.5mV
VOS (RTI(2)) vs temperatureShunt voltage, –40°C ≤ TA ≤ +125°C0.020.1µV/°C
Bus voltage, –40°C ≤ TA ≤ +125°C1040
PSRRPower-supply rejection ratio (RTI(2))Shunt voltage, 2.7V ≤ VS ≤ 5.5V1µV/V
Bus voltage0.5mV/V
IBInput bias current (IIN+, IIN– pins)8μA
VBUS input impedance830kΩ
Input leakage(3)(IN+) + (IN–),
power-down mode		0.10.5µA
DC ACCURACY
ADC native resolution16Bits
1-LSB step sizeShunt voltage2.5μV
Bus voltage1.25mV
Shunt voltage gain error0.02%0.1%
Shunt voltage gain error vs temperature–40°C ≤ TA ≤ +125°C525ppm/°C
Bus voltage gain error0.02%0.1%
Bus voltage gain error vs temperature–40°C ≤ TA ≤ +125°C1050ppm/°C
Power gain errorVBUS = 12V, VIN+ – VIN– = –80mV to 80mV0.05%0.2%
Power gain error vs temperature–40°C ≤ TA ≤ +125°C1050ppm/°C
DNLDifferential nonlinearity±0.1LSB
tCTADC conversion timeCT bit = 000140154µs
CT bit = 001204224
CT bit = 010332365
CT bit = 011588646
CT bit = 1001.11.21ms
CT bit = 1012.1162.328
CT bit = 1104.1564.572
CT bit = 1118.2449.068
SMBus
SMBus timeout(4)2835ms
DIGITAL INPUT/OUTPUT
Input capacitance3pF
Leakage input current0V ≤ VSCL ≤ VVS,
0V ≤ VSDA ≤ VVS,
0V ≤ VAlert ≤ VVS,
0V ≤ VA0 ≤ VVS,
0V ≤ VA1 ≤ VVS		0.52µA
VIHHigh-level input voltageSDA pin1.46V
VILLow-level input voltageSDA pin–0.30.4V
VOLLow-level output voltageIOL = 3mA, SDA and ALERT pins00.4V
Hysteresis500mV
POWER SUPPLY
Operating supply range2.75.5V
IQQuiescent current310400µA
Quiescent current, power-down (shutdown) mode25µA
VPORPower-on-reset (POR) threshold voltage2V
(1) Although the input range is 36V, the full-scale range of the ADC scaling is 40.96V; see Section 6.3.1. Do not apply more than 36V.
(2) RTI = Referred-to-input.
(3) Input leakage is positive (current flowing into the pin) for the conditions shown at the top of this table. Negative leakage currents can occur under different input conditions.
(4) SMBus timeout in the INA233 resets the interface whenever SCL is low for more than 28ms.