參數(shù)資料
型號: LM92CIM
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 溫度/濕度傳感器
英文描述: 【0.33∑C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
中文描述: DIGITAL TEMP SENSOR-SERIAL, 13BIT(s), 1.50Cel, RECTANGULAR, SURFACE MOUNT
封裝: 0.150 INCH, PLASTIC, SOP-8
文件頁數(shù): 7/18頁
文件大?。?/td> 396K
代理商: LM92CIM
Electrical Characteristics
(Continued)
Note 11:
Linearity Error is defined as the worse case difference of an actual reading to that of a calculated reading derived from the straight line whose endpoints
are measured at 30C and 125C for the range of 30C to 125C or whose endpoints are measured at 30C and 25C for the range of 30C to 25.
Note 12:
Offset Error calibration should be done at 30C. The residual error of the transfer function is then equivalent to the Accuracy Limit minus the Offset Limit.
This does not take into account the power supply sensitivity of the offset error. Nor, does it take into account the error introduced by the calibration system used.
Note 13:
This specification is provided only to indicate how often temperature data is updated. The LM92 can be read at any time without regard to conversion state
(and will yield last conversion result). If a conversion is in process it will be interrupted and restarted after the end of the read.
Note 14:
For best accuracy, minimize output loading. 10k pull-ups resistors should be sufficient. Higher sink currents can affect sensor accuracy with internal heat-
ing. This can cause an error of 0.64 C at full rated sink current and saturation voltage based on junction-to-ambient thermal resistance.
Note 15:
Hysteresis value adds to the T
setpoint value (e.g.: if T
setpoint = 10 C, and hysteresis = 2 C, then actual hysteresis point is 10+2 = 12 C); and
subtracts from the T
and T_CRIT setpoints (e.g.: if T
setpoint = 64 C, and hysteresis = 2 C, then actual hysteresis point is 642 = 62 C). For a detailed
discussion of the function of hysteresis refer to Section 1.1 TEMPERATURE COMPARISON, and Figure 3
Note 16:
Default values set at power up.
Note 17:
Holding the SDA and/or SCL lines Low for a time interval greater than t
TIMEOUT
will cause the LM92 to reset SCL and SDA to the IDLE state of the serial
bus communication (SDA and SCL set High).
DS101051-5
FIGURE 2. Temperature-to-Digital Transfer Function (Non-linear scale for clarity)
L
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