MAX6648_08 Datasheet, PDF (4/16 Pages) Maxim Integrated Products – Precision SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms

Precision SMBus-Compatible Remote/Local
Temperature Sensors with Overtemperature Alarms
(V_CC = 3.3V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
4.0
OPERATING SUPPLY CURRENT
vs. CONVERSION RATE
600
REMOTE TEMPERATURE ERROR
vs. REMOTE-DIODE TEMPERATURE
2.5
3.6
3.2
2.8
2.4
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
500
400
300
200
100
0
0.63 0.13 0.25 0.50 1.00 2.00 4.00
CONVERSION RATE (Hz)
1.5
0.5
-0.5
-1.5
-2.5
0
T_A = +85°C
FAIRCHILD 2N3906
25
50
75 100 125
TEMPERATURE (°C)
REMOTE TEMPERATURE ERROR
vs. 45nm REMOTE DIODE TEMPERATURE
6
4
2
0
-2
-4
-6
50
60
70
80
90 100
TEMPERATURE (°C)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
0
LOCAL TEMPERATURE ERROR
vs. DIE TEMPERATURE
25
50
75 100 125
TEMPERATURE (°C)
TEMPERATURE ERROR
vs. POWER-SUPPLY NOISE FREQUENCY
1.6
1.4
LOCAL ERROR
1.2
1.0
0.8
0.6
REMOTE ERROR
0.4
0.2
0
0.1
V_IN = SQUARE WAVE APPLIED TO V_CC
WITH NO 0.1μF V_CC CAPACITOR
1 10 100 1k 10k 100k
FREQUENCY (Hz)
TEMPERATURE ERROR
vs. COMMON-MODE NOISE FREQUENCY
9
8
V_IN = AC-COUPLED TO DXN
V_IN = 100mV_P-P
7
6
REMOTE ERROR
5
4
3
2
LOCAL ERROR
1
0
-1
-2
1
10 100
1k
10k 100k
FREQUENCY (Hz)
TEMPERATURE ERROR
vs. DIFFERENTIAL-MODE NOISE FREQUENCY
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5 ^{VIN = 20mVP-P SQUARE WAVE}
APPLIED TO DXP-DXN
-2.0
1
10 100 1k 10k 100k
FREQUENCY (Hz)
TEMPERATURE ERROR
vs. DXP-DXN CAPACITANCE
1
0
-1
-2
-3
-4
-5
-6
0.100
1.000
10.000
DXP-DXN CAPACITANCE (nF)
100.000
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