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LM95213 Datasheet(PDF) 11 Page - Texas Instruments |
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LM95213 Datasheet(HTML) 11 Page - Texas Instruments |
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11 / 43 page  0.01 0.1 1 10 CONVERSION TIME (sec) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 VDD = +3.3V TA = 25°C LM95213 www.ti.com SNIS147A – MARCH 2007 – REVISED MARCH 2013 – TCRIT3 Mask 7. Limit Registers – Local Tcrit Limit – Remote 1 Tcrit-1 Limit – Remote 2 Tcrit-1 Limit – Remote 1 Tcrit-2 and Tcrit-3 Limit – Remote 2 Tcrit-2 and Tcrit-3 Limit – Common Tcrit Hysteresis 8. Manufacturer ID Register 9. Revision ID Register CONVERSION SEQUENCE The LM95213 takes approximately 92 ms to convert the Local Temperature, Remote Temperatures 1 and 2, and to update all of its registers. These conversions for each thermal diode are addressed in a round robin sequence. Only during the conversion process the busy bit (D7) in Status register (02h) is high. The conversion rate may be modified by the Conversion Rate bits found in the Configuration Register (03h). When the conversion rate is modified a delay is inserted between each round of conversions, the actual time for each round remains at 92 ms (typical all channels enabled). The time a round takes depends on the number of channels that are on. Different conversion rates will cause the LM95213 to draw different amounts of average supply current as shown in Figure 6. This curve assumes all the channels are on. If channels are turned off the average current will drop since the round robin time will decrease and the shutdown time will increase during each conversion interval. Figure 6. Conversion Rate Effect on Power Supply Current POWER-ON-DEFAULT STATES LM95213 always powers up to these known default states. The LM95213 remains in these states until after the first conversion. 1. All Temperature readings set to 0°C until the end of the first conversion 2. Remote offset for all channels 0°C 3. Configuration: Active converting 4. Continuous conversion with all channels enabled, time = 1s 5. Enhanced digital filter enabled for Remote 1 and 2 6. Status Registers depends on state of thermal diode inputs 7. Local and Remote Temperature Limits for TCRIT1, TCRIT2 and TCRIT3 outputs: Copyright © 2007–2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM95213 |
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