LM92 datasheet(7/17 Pages) NSC

Il numero della parte	LM92

Spiegazioni elettronici	짹0.33째C Accurate, 12-Bit Sign Temperature Sensor and Thermal Window Comparator with Two-Wire Interface

PDF	17 Pages

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Produttore elettronici	NSC [National Semiconductor (TI)]

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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

heating. 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 TLOW setpoint value (e.g.: if TLOW setpoint = 10 ˚C, and hysteresis = 2 ˚C, then actual hysteresis point is 10+2 = 12 ˚C); and

subtracts from the THIGH and T_CRIT setpoints (e.g.: if THIGH setpoint = 64 ˚C, and hysteresis = 2 ˚C, then actual hysteresis point is 64−2 = 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 tTIMEOUT will cause the LM92 to reset SCL and SDA to the IDLE state of the serial

bus communication (SDA and SCL set High).

10105105

FIGURE 2. Temperature-to-Digital Transfer Function (Non-linear scale for clarity)

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