Environmental Monitoring and Control Device
Datasheet
12V
10k
Tach
TACH
Input
Output
10k
from Fan
4.7k
FIGURE 3.3 - FAN TACHOMETER CIRCUITRY (APPLY TO EACH FAN)
REMOTE2-
OUT
MMBT3904
100pF
5%
2
3
1
2
XSTR
1
100V
NPO
603
REMOTE2+
OUT
FIGURE 3.4 - REMOTE DIODE (APPLY TO REMOTE2 LINES)
Notes:
100pf cap is optional and should be placed close to the EMC6D100/EMC6D101 if used.
The voltage at PWM3 must be at least 2.0V to avoid triggering Address Enable.
SMSC EMC6D100/EMC6D101
Page 13
Rev. 09-09-04
DATASHEET