Rainbow Electronics LM41 - Manual (Page 5)

TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS
Parameter Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limits)
Diode Source Current
(V
D+
− V
D−
) = +0.65 V; High Current 188 280 µA (max)
Low Current 11.75 µA
Diode Source Current High Current to Low Current
Ratio
16
ANALOG TO DIGITAL CONVERTER CHARACTERISTICS
Symbol Parameter Conditions Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
TUE Total Unadjusted Error(Note 11) ± 2 %FS
(max)
Resolution 9 Bits
DNL Differential Non-linearity 1 LSB
Power Supply Sensitivity ± 1 %/V
Input Resistance, all analog inputs (total resistance
of divider chain)
210 140 k Ω (min)
400 k Ω (max)
SWD and ADD DIGITAL INPUT CHARACTERISTICS
Symbol Parameter Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
V
IH
SWD Logical High Input Voltage 2.1 V (min)
V+ + 0.5 V (max)
V
IL
SWD Logical Low Input Voltage 0.8 V (max)
-0.5 V (min)
V
IH
ADD Logical High Input Voltage 90% x V+ V (min)
V
IL
ADD Logical Low Input Voltage 10% x V+ V (max)
V
HYST
Input Hysteresis 300 mV
I
L
SWD and ADD Input Current GND ≤ V
IN
≤ V+ ± 0.005 ± 10 µA (max)
SWD Input Current with V+ Open or
Grounded
GND ≤ V
IN
≤ 3.6V,
and V+ Open or
GND
± 0.005 µA
C
IN
Digital Input Capacitance 10 pF
SWD DIGITAL OUTPUT CHARACTERISTICS
Symbol Parameter Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limit)
V
OL
Open-drain Output Logic “Low”
Voltage
I
OL
= 4mA 0.4 V (max)
I
OL
= 50µA 0.2 V (max)
I
OH
Open-drain Output Off Current ± 0.005 ± 10 µA (max)
C
OUT
Digital Output Capacitance 10 pF
AC Electrical Characteristics
The following specification apply for V+ = +3.0 V
DC
to +3.6 V
DC
, unless otherwise specified. Boldface limits apply for
T
A
= T
J
= T
MIN
=0˚C to T
MAX
=85˚C; all other limits T
A
= T
J
= 25˚C. The SensorPath Characteristics conform to the SensorPath
specification revision 0.98. Please refer to that speciation for further details.
Symbol Parameter Conditions
Typical
(Note 7)
Limits
(Note 8)
Units
(Limits)
HARDWARE MONITOR CHARACTERISTICS
t
CONV
Total Monitoring Cycle Time (Note 13) All Voltage and
Temperature readings
(Default)
182 163.8 ms (min)
200.2 ms (max)
LM41
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