Datasheet

0 50 100 150 200
SAMPLE NUMBER
TEMPERATURE (
o
C)
LM95245 with
Filter On
LM95245 with
Filter Off
25
27
29
31
33
35
37
39
41
43
45
LM95245
SNIS148G –OCTOBER 2007–REVISED MARCH 2013 www.ti.com
Figure 10. Impuse Response with Input Transients Greater Than 4°C
Figure 11 shows the filter in use in a typical Intel processor on a 45/65/90 nm process system. Note that the two
curves have been purposely offset for clarity. Inserting the filter does not induce an offset as shown.
Figure 11. Digital Filter Response in a Typical Intel Processor on a 45nm, 65 nm or 90 nm Process
(Filter Curves Were Purposely Offset for Clarity)
TEMPERATURE DATA FORMAT
Temperature data can only be read from the Local and Remote Temperature registers.
Remote temperature data with the digital filter off is represented by an 10-bit plus sign, two's complement word
and 11-bit unsigned binary word with an LSb (Least Significant Bit) equal to 0.125°C. The data format is a left
justified 16-bit word available in two 8-bit registers. Unused bits report "0".
Remote temperature data with the digital filter on is represented by a 12-bit plus sign, two's complement word
and 13-bit unsigned binary word with an LSb (Least Significant Bit) equal to 0.03125°C (1/32°C). The data format
is a left justified 16-bit word available in two 8-bit registers. Unused bits report "0".
Table 3. 11-Bit, 2's Complement (10-Bit Plus Sign)
Digital Output
Temperature
Binary Hex
+125°C 0111 1101 0000 0000 7D00h
+25°C 0001 1001 0000 0000 1900h
+1°C 0000 0001 0000 0000 0100h
+0.125°C 0000 0000 0010 0000 0020h
0°C 0000 0000 0000 0000 0000h
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