MAX31855RASA+T Maxim Integrated, MAX31855RASA+T Datasheet - Page 4

• Manufacturer Part Number: MAX31855RASA+T
• Description: Data Conversion ICs - Various Thermocouple To Digital Converter
• Manufacturer: Maxim Integrated
• Series: MAX31855r

Specifications of MAX31855RASA+T

• Part # Aliases: 90-31855+RTR

THERMAL CHARACTERISTICS (continued)
(3.0V P V
SERIAL-INTERFACE TIMING CHARACTERISTICS
(See
Note 2: All voltages are referenced to GND. Currents entering the IC are specified positive, and currents exiting the IC are negative.
Note 3: Guaranteed by design; not production tested.
Note 4: Not including cold-junction temperature error or thermocouple nonlinearity.
Note 5: Specification is 100% tested at T
Note 6: Because the thermocouple temperature conversions begin at V
Note 7: For all pins except T+ and T- (see the Thermocouple Input Bias Current parameter in the
Maxim Integrated
Thermocouple Temperature Data
Resolution
Internal Cold-Junction
Temperature Error
Cold-Junction Temperature Data
Resolution
Temperature Conversion Time
(Thermocouple, Cold Junction,
Fault Detection)
Thermocouple Conversion
Power-Up Time
Input Leakage Current
Input Capacitance
Serial-Clock Frequency
SCK Pulse-High Width
SCK Pulse-Low Width
SCK Rise and Fall Time
CS Fall to SCK Rise
SCK to CS Hold
CS Fall to Output Enable
CS Rise to Output Disable
SCK Fall to Output Data Valid
CS Inactive Time
Figure 1
design and characterization; not production tested.
temperature conversion may not produce an accurate result. Therefore, the t
greater than V
table).
CC
PARAMETER
PARAMETER
P 3.6V, T
and
Figure
A
CCMIN
= -40NC to +125NC, unless otherwise noted.) (Note 4)
2.)
to guarantee a valid thermocouple temperature conversion result.
SYMBOL
t
SYMBOL
CONV_PU
t
I
CONV
LEAK
f
t
C
t
t
t
CSS
t
SCL
t
DO
CH
DV
CL
TR
IN
A
Thermocouple-to-Digital Converter
= +25NC. Specification limits over temperature (T
T
T
T
(Note 5)
(Note 6)
(Note 7)
(Note 3)
A
A
A
= -20NC to +85NC (Note 3)
= -40NC to +125NC (Note 3)
= -40NC to +125NC
Cold-Junction Compensated
CONDITIONS
CONDITIONS
POR
, depending on V
CONV_PU
A
CC
= T
specification is required after V
MIN
MIN
200
100
100
100
100
200
slew rates, the first thermocouple
-2
-3
-1
MIN
DC Electrical Characteristics
to T
MAX31855
0.0625
TYP
0.25
TYP
MAX
70
8
) are guaranteed by
MAX
MAX
100
200
100
+2
+3
+1
40
40
5
UNITS
UNITS
MHz
ms
ms
µA
NC
NC
NC
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
CC
is
4