MAX31855TASA-T 查看數據表（PDF） - Maxim Integrated
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MAX31855TASA-T Datasheet PDF : 13 Pages
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MAX31855
Cold-Junction Compensated
Thermocouple-to-Digital Converter
SERIAL-INTERFACE TIMING CHARACTERISTICS
(See Figure 1 and Figure 2.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
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
ILEAK
CIN
fSCL
tCH
tCL
(Note 7)
tCSS
tDV
tTR
tDO
(Note 3)
-1
+1
µA
8
pF
5
MHz
100
ns
100
ns
200
ns
100
ns
100
ns
100
ns
40
ns
40
ns
200
ns
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 TA = +25NC. Specification limits over temperature (TA = TMIN to TMAX) are guaranteed by
design and characterization; not production tested.
Note 6: Because the thermocouple temperature conversions begin at VPOR, depending on VCC slew rates, the first thermocouple
temperature conversion may not produce an accurate result. Therefore, the tCONV_PU specification is required after VCC is
greater than VCCMIN to guarantee a valid thermocouple temperature conversion result.
Note 7: For all pins except T+ and T- (see the Thermocouple Input Bias Current parameter in the DC Electrical Characteristics
table).
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*The parametric values (min, typ, max limits) shown in the Electrical Characteristics table supersede values quoted elsewhere in this data sheet.
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