±1°C, SMBus-Compatible Remote/Local Temperature
Sensors with Overtemperature Alarms
MAX6657/MAX6658/MAX6659
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
MAX6659
REMOTE TEMPERATURE ERROR
vs. REMOTE-DIODE TEMPERATURE
MAX6657 toc02
MAX6657 toc03
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6657 toc01
OPERATING SUPPLY CURRENT
vs. CONVERSION RATE
600
8Hz AND 16Hz ARE 1°C RESOLUTION
OPERATING SUPPLY CURRENT (µA)
3
2
TEMPERATURE ERROR (°C)
1
0
-1
-2
4.5
STANDBY SUPPLY CURRENT (µA)
4.0
400
3.5
200
3.0
FAIRCHILD 2N3906
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
0
0.063 0.125 0.25 0.5
1
2
4
8
16
CONVERSION RATE (Hz)
-3
-55
-30
-5
20
45
70
95
120
TEMPERATURE (°C)
LOCAL TEMPERATURE ERROR
vs. DIE TEMPERATURE
MAX6657 toc04
TEMPERATURE ERROR vs.
POWER-SUPPLY NOISE FREQUENCY
MAX6657 toc05
TEMPERATURE ERROR vs.
COMMON-MODE NOISE FREQUENCY
MAX6657 toc06
3
2
TEMPERATURE ERROR (°C)
1
0
-1
-2
-3
-55
-30
-5
20
45
70
95
120
TEMPERATURE (°C)
1
1
TEMPERATURE ERROR (°C)
TEMPERATURE ERROR (°C)
0
0
-1
V
IN
= SQUARE WAVE APPLIED TO V
CC
WITH NO 0.1µF V
CC
CAPACITOR
-1
-2
-2
V
IN
= AC-COUPLED TO DXN
V
IN
= 100mVp-p
1k
100k
FREQUENCY (Hz)
10M
1G
-3
10k
100k
1M
FREQUENCY (Hz)
10M
100M
-3
0.01k
TEMPERATURE ERROR vs.
DIFFERENTIAL-MODE NOISE FREQUENCY
MAX6657 toc07
TEMPERATURE ERROR vs.
DXP-DXN CAPACITANCE
MAX6657 toc08
1
0
TEMPERATURE ERROR (°C)
0
TEMPERATURE ERROR (°C)
-1
-2
-1
V
IN
= 10mV
P-P
SQUARE WAVE
APPLIED TO DXP-DXN
-3
-2
-4
-3
10k
100k
1M
FREQUENCY (Hz)
10M
100M
-5
0
10 20 30 40 50 60 70 80 90 100
DXP-DXN CAPACITANCE (nF)
4
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
