Datasheet

4 Maxim Integrated
±1°C Accurate 8-Channel Temperature Sensor
MAX6581
Typical Operating Characteristics
(V
CC
= +3.3V, V
STBY
= V
CC
, T
A
= +25NC, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.0V to +3.6V, T
A
= -40NC to +125NC, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25NC.) (Note 2)
Note 2:
All parameters are tested at T
A
= +85NC. Specifications over temperature are guaranteed by design.
Note 3: Timing specifications are guaranteed by design.
Note 4: The serial interface resets when SMBCLK is low for more than t
TIMEOUT
.
Note 5: A transition must internally provide at least a hold time to bridge the undefined region (300ns max) of SMBCLK’s falling
edge.
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6581 toc01
SUPPLY VOLTAGE (V)
STANDBY SUPPLY CURRENT (µA)
3.53.43.33.23.1
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
0
3.0 3.6
HARDWARE OR SOFTWARE
STANDBY SUPPLY CURRENT
AVERAGE OPERATING SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6581 toc02
SUPPLY VOLTAGE (V)
AVERAGE OPERATING SUPPLY CURRENT (µA)
3.53.43.1 3.2 3.3
365
370
375
380
385
390
395
400
360
3.0 3.6
RESISTANCE
CANCELLATION OFF
REMOTE-DIODE TEMPERATURE ERROR
vs. REMODE-DIODE TEMPERATURE
MAX6581 toc03
REMOTE-DIODE TEMPERATURE (°C)
REMOTE-DIODE TEMPERATURE ERROR (°C)
1109050 703010
-3
-2
-1
0
1
2
3
4
5
6
7
8
9
10
-4
-5
-6
-7
-8
-9
-10
-10 130
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Receive SMBCLK/SMBDATA
Rise Time
t
R
300 ns
Receive SMBCLK/SMBDATA Fall
Time
t
F
300 ns
Data-Out Hold Time t
DH
50 ns
Pulse Width of Spike Suppressed t
SP
0 50 ns
SMBus Timeout t
TIMEOUT
SMBDATA low period for interface reset 25 37 45 ms