Typical operating characteristics – Rainbow Electronics MAX6649 User Manual
Page 4
MAX6646/MAX6647/MAX6649
+145°C Precision SMBus-Compatible Remote/
Local Sensors with Overtemperature Alarms
4
_______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
MAX6649 toc01
SUPPLY VOLTAGE (V)
STANDBY SUPPLY CURRENT (
µ
A)
5.0
4.5
4.0
3.5
3.0
3.5
4.0
4.5
5.0
2.5
3.0
5.5
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6649 toc02
CONVERSION RATE (Hz)
OPERATING SUPPLY CURRENT (
µ
A)
4.00
2.00
1.00
0.50
0.25
0.13
100
200
300
400
0
0.63
OPERATING SUPPLY CURRENT
vs. CONVERSION RATE
MAX6649 toc03
TEMPERATURE (
°C)
TEMPERATURE ERROR (
°C)
125
100
75
50
25
-1.5
-0.5
0
0.5
1.0
1.5
2.0
-2.0
0
REMOTE TEMPERATURE ERROR
vs. REMOTE-DIODE TEMPERATURE
-1.0
T
A
= +85
°C
FAIRCHILD 2N3906
MAX6649 toc04
TEMPERATURE (
°C)
TEMPERATURE ERROR (
°C)
100
75
50
25
-1.5
-1.0
-0.5
0
0.5
1.0
-2.0
0
125
LOCAL TEMPERATURE ERROR
vs. DIE TEMPERATURE
MAX6649 toc05
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
10k
1k
100
10
1
-1
0
1
2
3
4
5
-2
0.1
100k
V
CC
= SQUARE WAVE APPLIED TO
V
CC
WITH NO BYPASS CAPACITOR
LOCAL ERROR
TEMPERATURE ERROR
vs. POWER-SUPPLY NOISE FREQUENCY
REMOTE ERROR
MAX6649 toc06
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
10k
1k
100
10
-1
0
1
2
3
4
5
6
7
8
9
-2
1
100k
LOCAL TEMPERATURE ERROR
vs. COMMON-MODE NOISE FREQUENCY
LOCAL ERROR
REMOTE ERROR
V
IN
= AC-COUPLED TO DXN
V
IN
= 100mV
P-P
MAX6649 toc07
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
10k
1k
100
10
-0.5
0
0.5
1.0
1.5
2.0
-1.0
1
100k
TEMPERATURE ERROR
vs. DIFFERENTIAL-MODE NOISE FREQUENCY
MAX6649 toc08
DXP-DXN CAPACITANCE (nF)
TEMPERATURE ERROR (
°C)
10.000
1.000
-4
-3
-2
-1
0
1
-5
0.100
100.000
TEMPERATURE ERROR
vs. DXP-DXN CAPACITANCE