Dual Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
SMSC EMC1182 37 Revision 1.0 (07-11-13)
DATASHEET
6.14 Filter Control Register 40h
The Filter Configuration Register controls the digital filter on the External Diode channel.
Bits 1-0 - FILTER[1:0] - Control the level of digital filtering that is applied to the External Diode
temperature measurement as shown in Table 6.18. See Figure 5.4 and Figure 5.5 for examples on the
filter behavior.
6.15 Product ID Register
The Product ID Register holds a unique value that identifies the device.
6.16 SMSC ID Register
The Manufacturer ID register contains an 8-bit word that identifies the SMSC as the manufacturer of
the EMC1182.
Table 6.17 Filter Configuration Register
ADDR. R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT
40h R/W Filter Control - - - - - - FILTER[1:0] 00h
Table 6.18 FILTER Decode
FILTER[1:0]
AVERAGING10
0 0 Disabled (default)
0 1 Level 1
1 0 Level 1
1 1 Level 2
Table 6.19 Product ID Register
ADDR R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT
FDh R Product ID 0 0 1 0 0 0 0 0 20h
Table 6.20 Manufacturer ID Register
ADDR.R/WREGISTERB7B6B5B4B3B2B1B0DEFAULT
FEhRSMSC ID01011101 5Dh
Dual Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
Revision 1.0 (07-11-13) 38 SMSC EMC1182
DATASHEET
6.17 Revision Register
The Revision register contains an 8-bit word that identifies the die revision.
Table 6.21 Revision Register
ADDR. R/W REGISTER B7 B6 B5 B4 B3 B2 B1 B0 DEFAULT
FFh R Revision00000111 07h
Dual Channel 1°C Temperature Sensor with Beta Compensation and 1.8V SMBus Communications
Datasheet
SMSC EMC1182 39 Revision 1.0 (07-11-13)
DATASHEET
Chapter 7 Typical Operating Curves
Temperature Error vs. Filter Capacitor
(2N3904, TA = 27°C, T
DIODE
= 27°C, VDD = 3.3V)
-1.0
-0.8
-0.5
-0.3
0.0
0.3
0.5
0.8
1.0
0 1000 2000 3000 4000
Filter Capacitor (pF)
Temperature Error (°C)
Temperature Error vs. Ambient Temperature
(2N3904, T
DIODE
= 42.5°C, VDD = 3.3V)
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
Ambient Temperature (°C)
Temperature Error (°C)
Temperature Error vs. External Diode Temperature
(2N3904, TA = 42.5°C, VDD = 3.3V)
-1.0
-0.8
-0.6
-0.4
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
External Diode TemperatureC)
Temperature ErrorC)
Temperature Error vs. CPU Temperature
Typical 65nm CPU from major vendor
(TA = 27°C, VDD = 3.3V, BETA = 011, C
FILTER
= 470pF)
-1
0
1
2
3
4
5
20 40 60 80 100 120
CPU Temperature (°C)
Temperature Error (°C)
Beta Compensation
Disabled
Beta Compensation Enabled

EMC1182-1-AIA-TR

Mfr. #:
Manufacturer:
Microchip Technology
Description:
Board Mount Temperature Sensors 1.8V SMBus Dual Tmp Sensor /w Alerts
Lifecycle:
New from this manufacturer.
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