emc1428 Standard Microsystems Corp., emc1428 Datasheet - Page 21

• Manufacturer Part Number: emc1428
• Description: 1 Degree C Multiple Temperature Sensor With Hw Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

1°C Multiple Temperature Sensor with HW Thermal Shutdown & Hottest of Thermal Zones
Datasheet
SMSC EMC1428
4.6
Continuous (see
CONVERSION RATE
i.e. CPU substrate PNP
substrate transistor
4 / sec (default)
Typical remote
Local Ground
1 / sec
2 / sec
Diode Connections
noise rejection due to the longer integration time as well as less random variation of the temperature
measurement.
When enabled, the dynamic averaging will affect the average supply current based on the chosen
conversion rate as shown in
The diode connection for the External Diode 1 channel is determined based on the selected device.
For the EMC1428, this channel can support a diode-connected transistor (such as a 2N3904) or a
substrate transistor (such as those found in an CPU or GPU) as shown in
diodes are not supported on the External Diode 1 channel.
Table
5.8)
Table 4.2 Supply Current vs. Conversion Rate for EMC1428
DN
DP
AVERAGING
to
to
(DEFAULT)
ENABLED
DYNAMIC
AVERAGE SUPPLY CURRENT
715uA
750uA
900uA
950uA
discrete PNP transistor
Figure 4.4 Diode Connections
Table 4.2
Typical remote
i.e. 2N3906
DATASHEET
for EMC1428.
21
AVERAGING
DISABLED
DYNAMIC
450uA
550uA
815uA
950uA
DP
DN
to
to
discrete NPN transistor
AVERAGING FACTOR (BASED ON
AVERAGING
(DEFAULT)
ENABLED
DYNAMIC
Typical remote
0.5x
i.e. 2N3904
4x
2x
1x
11-BIT OPERATION)
Figure
Revision 0.68 (07-08-08)
AVERAGING
4.4. Anti-parallel
DISABLED
DYNAMIC
0.5x
1x
1x
1x
DP
DN
to
to