emc2101 Standard Microsystems Corp., emc2101 Datasheet - Page 10

• Manufacturer Part Number: emc2101
• Description: Emc2101 Fan Control With 1?c Accurate Temperature Monitoring
• Manufacturer: Standard Microsystems Corp.

Revision 2.53 (02-19-08)
Supply Current
Supply Current
Standby Current
Temperature Accuracy
Temperature
Resolution
Conversion Time
Internal Channel
Temperature Accuracy
Temperature
Resolution
Conversion Time
External Channel
Diode Decoupling
Capacitor
Diode Decoupling
Capacitor
Resistance Error
Correction
TACH Accuracy
Fan Counter Clock
Frequency
PWM Resolution
PWM Frequency
PWM Duty cycle
Output Voltage Drive
CHARACTERISTIC
V
DD
= 3.0V to 3.6V, T
SYMBOL
I
I
I
t
t
C
C
R
f
D
V
DD
DD
STANDBY
CONV
CONV
PWM
DAC
FILTER
FILTER
SERIES
PWM
A
Table 3.2 Electrical Specifications (continued)
= 0
o
C - 85
MIN
Pulse Width Modulator Fan Driver
0.2
22
External Temperature Monitor
0
Internal Temperature Monitor
o
C, Typical values are at T
TACH Measurement
TYP
90
0.125
DATASHEET
±0.5
300
300
100
DAC Fan Driver
±1
±1
±1
21
64
3
10
MAX
V
10
DD
TBD
180
470
100
2.2
SMBus Fan Control with 1°C Accurate Temperature Monitoring
±2
±1
±3
5k
- 0.2
UNIT
uA
uA
μA
°C
°C
ms
°C
°C
°C
ms
nF
pF
Ω
%
kHz
steps
Hz
%
V
A
= 27°C unless otherwise noted
CONDITIONS
1 conversion / 16 seconds - DAC
Driver, no load
Temp monitoring Disabled, DAC
Driver enabled, no load
PWM disabled, Monitoring
disabled
8 bit resolution
60°C < T
10°C < T
0°C < T
11 bit resolution
Connected across External Diode
(2N3904)
Connected across Substrate
Transistor (CPU diode)
Series resistance in DP and DN
lines
TACH valid
For 64 steps, higher frequencies
are possible with reduced
resolution. See
Current Load = ±1mA
DIODE
A
DIODE
< 70°C
< 125°C
< 100°C,
Section
SMSC EMC2101
6.34.
Datasheet