Typical operating characteristics – Rainbow Electronics MAX1669 User Manual
Page 5
MAX1669
Fan Controller and Remote Temperature Sensor
with SMBus Serial Interface
_______________________________________________________________________________________
5
40
-30
1
10
100
TEMPERATURE ERROR
vs. LEAKAGE RESISTANCE
-10
MAX1669-01
LEAKAGE RESISTANCE (M
Ω)
TEMPERATURE ERROR (°C)
10
30
-40
-20
0
20
PATH = DXP TO V
CC
(5V); CONFIG = 02h
PATH = DXP TO GND; CONFIG = 02h
-2.0
-1.0
-1.5
0.5
0
-0.5
1.5
1.0
2.0
-60
20
-20
60
100
-40
40
0
80
120 140
TEMPERATURE ERROR
vs. REMOTE DIODE TEMPERATURE
MAX1669-02
TEMPERATURE (°C)
TEMPERATURE ERROR (
°C)
RANDOM 2N3906s FROM
DIFFERENT MANUFACTURERS
18
-2
1K
10K
100K
1M
10M
100M
TEMPERATURE ERROR vs.
POWER-SUPPLY NOISE FREQUENCY
2
0
MAX1669-03
PSNF (Hz)
TEMPERATURE ERROR (
°C)
6
14
10
4
8
16
12
V
IN
= SQUARE WAVE APPLIED TO
V
CC
WITH NO 0.1
µF V
CC
CAPACITOR
V
IN
= 100mVp-p
V
IN
= 250mVp-p
7
-2
1M
1G
100M
10M
TEMPERATURE ERROR vs.
COMMON-MODE NOISE FREQUENCY
1
-1
5
3
8
2
0
6
4
MAX1669-04
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
V
IN
= 50mVp-p AC-COUPLED TO DXN
C = DXN - DXP CAPACITANCE
C = 27nF
C = 2200pF
-16
-12
-14
-6
-8
-10
0
-2
-4
2
0
20
10
30
40
50
TEMPERATURE ERROR
vs. DXP - DXN CAPACITANCE
MAX1669-05
DXP-DXN CAPACITANCE (nF)
TEMPERATURE ERROR (
°C)
V
CC
= 5V
0
2
1
4
3
6
5
7
3.0
4.0
3.5
4.5
5.0
5.5
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1669-06
SUPPLY VOLTAGE (V)
STANDBY SUPPLY CURRENT (
µ
A)
0
40
20
80
60
100
120
-2
2
4
0
6
8
10
RESPONSE TO THERMAL SHOCK
MAX1669-07
TIME (sec)
TEMPERATURE (
°C)
CMPT3906 IMMERSED IN
+115°C FLUORINERT BATH
0
20
60
40
80
120
100
140
160
180
0
4
2
5
7 8
10
12
3
1
6
9
11
13 14
PWM FREQUENCY vs. CODE (F3F2F1F0)
MAX1669-08
CODE (F3F2F1F0)
PWM FREQUENCY (Hz)
V
CC
= +3.3V
V
CC
= +5V
Typical Operating Characteristics
(Temperature error = measured - actual, T
A
= +25°C, unless otherwise noted.)