Datasheet

MAX31782
System Management Microcontroller
3
DC ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 2.7V to 5.5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
DD
= 3.3V, T
A
= +25NC, unless otherwise
noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
System Clock Startup t
SU:MOSC
From POR, MOSC inactive 1000
MOSC
Cycles
Output Logic-Low V
OL
I
OL
= 4mA (Note 1) 0.4 V
Output Logic-High (all pins
except SDA, SLL, MSDA, MSCL)
V
OH
I
OH
= -2mA (Note 1)
V
DD
-
0.5
V
GPIO Mode Pullup Current I
PU
V
PIN
= V
SS,
V
DD
= 3.3V 38 55 107
FA
ADC Voltage Conversion Time t
CONV_V
(Note 4) 137 150 µs
ADC Temperature Conversion
Time
t
CONV_T
(Note 4) 7 ms
ADC Internal Reference 1.225 V
ADC Voltage Measurement Error V
ERR
-1 +1 %
ADC Internal Reference
Temperature Drift
-0.5 +0.5 %
ADC Internal Reference Initial
Accuracy (+25NC)
-1 +1 mV
ADC External Reference Buffer
Accuracy
(Note 5)
Q0.25
%
ADC Operating Current I
ADC
This current is in addition to I
CPU
2.2 mA
ADC Full-Scale Input Voltage
(Note 6)
V
FS
ADGAIN = 0, factory set, internal reference 1.213 1.225 1.237
V
ADGAIN = 1, factory set, internal reference 5.445 5.5 5.555
ADC Measurement Resolution V
LSB
ADGAIN = 0 300
FV
ADGAIN = 1 1343
ADC Bit Resolution 12 Bits
AD0P–AD5P Input Resistance R
IN
15
MI
ADC Integral Nonlinearity INL (Note 7)
Q8
LSB
ADC Offset V
OFFSET
Q2
LSB
Internal Temperature
Measurement Error
T
A
= -40NC to +85NC
-3 +3
NC
Remote Temperature
Measurement Error
(MAX31782 Error Only)
T
A
= 0NC to +60NC,
T
DIODE
= +60NC to +120NC
-1.5 +1.5
NC
T
A
= 0NC to +60NC,
T
DIODE
= -45NC to +120NC
-1.75 +1.75
T
A
= -40NC to +85NC,
T
DIODE
= +60 to +120NC
-2.75 +2.75
T
A
= -40NC to +85NC,
T
DIODE
= -45NC to +120NC
-3.0 +3.0