Rainbow Electronics MAX6681 - Manual (Page 4)

MAX6680/MAX6681
±1°C Fail-Safe Remote/Local Temperature
Sensors with SMBus Interface
4 _______________________________________________________________________________________
Typical Operating Characteristics
(T A = +25°C, unless otherwise noted.)
MAX6680/81 toc01
SUPPLY VOLTAGE (V)
STANDBY SUPPLY CURRENT (
µ
A)
5.0 4.5 4.0 3.5
1
2
3
4
5
6
7
8
9
10
0
3.0 5.5
STANDBY SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX6680/81 toc02
CONVERSION RATE (Hz)
OPERATING SUPPLY CURRENT (
µ
A)
8.0000 4.0000 2.0000 1.0000 0.5000 0.2500 0.1250
100
200
300
400
500
600
0
0.0625
AVERAGE OPERATING SUPPLY CURRENT
vs. CONVERSION RATE
8Hz IS 1 °C
RESOLUTION
MAX6680/81 toc03
TEMPERATURE ( °C)
TEMPERATURE ERROR (
°C)
125 100 75 50 25 0 -25
-2
-1
0
1
2
3
-3
-50 150
TEMPERATURE ERROR
vs. REMOTE-DIODE TEMPERATURE
MAX6680/81 toc04
TEMPERATURE ( °C)
TEMPERATURE ERROR (
°C)
100 50 0
-2
-1
0
1
2
3
-3
-50 150
LOCAL TEMPERATURE ERROR
vs. DIE TEMPERATURE
MAX6680/81 toc05
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
1M 10k 100
0
0.2
0.4
0.6
0.8
1.0
1.2
-0.2
1 10M 100k 1k 10 100M
TEMPERATURE ERROR
vs. POWER-SUPPLY NOISE FREQUENCY
V
IN
= 100mV SQUARE WAVE
APPLIED TO V CC WITH NO
0.1 µF V
CC CAPACITOR
LOCAL
DIODE
REMOTE
DIODE
MAX6680/81 toc06
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
10M 1M 100k 10k 1k 100 10
-1
0
1
2
3
4
5
-2
1 100M
TEMPERATURE ERROR
vs. COMMON-MODE NOISE FREQUENCY
V
IN
= 100mV
P-P
SQUARE WAVE
AC-COUPLED TO DXN
MAX6680/81 toc07
FREQUENCY (Hz)
TEMPERATURE ERROR (
°C)
10M 1M 100k 10k 1k
0
1
2
3
-1
100 100M
TEMPERATURE ERROR
vs. DIFFERENTIAL NOISE FREQUENCY
V IN = 10mV P-P SQUARE WAVE
APPLIED TO DXP-DXN
MAX6680/81 toc08
DXP-DXN CAPACITANCE (nF)
TEMPERATURE ERROR (
°C)
90 80 70 60 50 40 30 20 10
-4
-3
-2
-1
0
1
-5
0 100
TEMPERATURE ERROR
vs. DXP-DXN CAPACITANCE