EMC1424-1-AIZL SMSC, EMC1424-1-AIZL Datasheet - Page 18

• Manufacturer Part Number: EMC1424-1-AIZL
• Description: Board Mount Temperature Sensors QUAD TEMP SNSR
• Manufacturer: SMSC

Specifications of EMC1424-1-AIZL

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Revision 1.36 (07-02-09)
5.0.1
5.0.2
CONVERSION RATE
4 / sec (default)
Anti-parallel
diodes
16 / sec
1 / sec
2 / sec
8 / sec
Thermal
Conversion Rates
The EMC1423 and EMC1424 may be configured for different conversion rates based on the system
requirements. The conversion rate is configured as described in
rate is 4 conversions per second. Other available conversion rates are shown in
Dynamic Averaging
Dynamic averaging causes the EMC1423 and EMC1424 to measure the external diode channels for
an extended time based on the selected conversion rate. This functionality can be disabled for
increased power savings at the lower conversion rates (see
enabled, the device will automatically adjust the sampling and measurement time for the external diode
channels. This allows the device to average 2x or 16x longer than the normal 11 bit operation
(nominally 21ms per channel) while still maintaining the selected conversion rate. The benefits of
dynamic averaging are improved 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
diode
CPU
Table 5.1 Supply Current vs. Conversion Rate for EMC1423
(DEFAULT)
Figure 5.2 System Diagram for EMC1424
ENABLED
AVERAGE SUPPLY CURRENT
1010uA
1020uA
DP2
DN2
DP1
DN1
EMC1424
660uA
930uA
950uA
Internal
Diode
Table 5.1
DATASHEET
SYS_SHDN
for EMC1423.
SMCLK
SMDATA
ALERT
18
DISABLED
430uA
475uA
510uA
630uA
775uA
1°C Temperature Sensor with Hardware Thermal Shutdown
Interface
Power Control
SMBus
Host
Section
AVERAGING FACTOR (BASED ON
(DEFAULT)
ENABLED
Section
6.4). When dynamic averaging is
16x
8x
4x
2x
1x
11-BIT OPERATION)
6.5. The default conversion
SMSC EMC1423/EMC1424
Table
DISABLED
6.6.
1x
1x
1x
1x
1x
Datasheet