Manual

DS1841
Temperature-Controlled, NV, I
2
C,
Logarithmic Resistor
_______________________________________________________________________________________ 3
TEMPERATURE SENSOR CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Temperature Error ±5 °C
Update Rate (Temperature and
Supply Conversion Time)
t
FRAME
16 ms
ANALOG VOLTAGE MONITORING CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Resolution LSB Full-scale voltage of 6.5536V 25.6 mV
Input/Supply Accuracy A
CC
At factory setting 0.25 1.0
% FS
(Full
Scale)
Update Rate (Temperature and
Supply Conversion Time)
t
FRAME
16 ms
I
2
C AC ELECTRICAL CHARACTERISTICS (See Figure 3)
(V
CC
= +2.7V to +5.5V, T
A
= -40°C to +100°C, timing referenced to V
IL(MAX)
and V
IH(MIN)
.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
SCL Clock Frequency f
SCL
(Note 6) 0 400 kHz
Bus Free Time Between STOP
and START Conditions
t
BUF
1.3 μs
Hold Time (Repeated) START
Conditions
t
HD:STA
0.6 μs
Low Period of SCL t
LOW
1.3 μs
High Period of SCL t
HIGH
0.6 μs
Data Hold Time t
HD:DAT
0 0.9 μs
Data Setup Time t
SU:DAT
100 ns
START Setup Time t
SU:STA
0.6 μs
SDA and SCL Rise Time t
R
(Note 7)
20 +
0.1C
B
300 ns
SDA and SCL Fall Time t
F
(Note 7)
20 +
0.1C
B
300 ns
STOP Setup Time t
SU:STO
0.6 μs
SDA and SCL Capacitive
Loading
C
B
(Note 7) 400 pF