1°C Triple Temperature Sensor with Hotter of Two Zones
Datasheet
ILOW
IHIGH
DP
Anti-
Aliasing
Filter
DN
ΔΣ
ADC
Figure 3.2 Block Diagram of Temperature Monitoring Circuit
Figure 3.2 shows a block diagram of the temperature measurement circuit. The negative terminal for
the remote temperature diode, DN, is internally biased with a forward diode voltage referenced to
ground.
The External Diode 2 channel in the EMC1063 is compatible with a broad range of thermal diode,
including those found in AMD processors, that may be connected as shown in Figure 3.3.
to
to
to
DP
DP
DP
to
to
to
DN
DN
DN
Typical remote
PN Junction diode
i.e. AMD temperature diode
Typical remote
discrete PNP transistor
i.e. 2N3906
Typical remote
discrete NPN transistor
i.e. 2N3904
Figure 3.3 External Diode Configurations
SMSC EMC1063
13
DATASHEET
Revision 1.37 (02-05-07)