MAX31725(2012) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX31725 Datasheet PDF : 15 Pages
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MAX31725
±0.5°C Local Temperature Sensor
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 2.5V to 3.7V, TA = -55NC to +150NC, unless otherwise noted. Typical values are VDD = 3.3V, TA = +25NC.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
OS Delay
Depends on fault queue setting
1
6 Conversions
TOS Default Temperature
THYST Default Temperature
POR Voltage Threshold
Factory default setting
Factory default setting
80
80
80
NC
75
75
75
NC
2.26
V
POR Hysteresis
130
mV
Input-High Leakage Current
Input-Low Leakage Current
Input Capacitance
IIH
VIN = 3.3V (all digital inputs)
IIL
VIN = 0V (all digital inputs )
All digital inputs
0.005
1
FA
0.005
1
FA
5
pF
Output-High Leakage Current
OS Output Saturation Voltage
Output Low Voltage
VIN = 3.3V (SDA and OS)
IOUT = 4.0mA
IOL = 3mA (SDA)
1
FA
0.8
V
0.4
V
I2C AC ELECTRICAL CHARACTERISTICS
(VDD = 2.5V to 3.7V, TA = -55NC to +150NC, unless otherwise noted. Typical values are VDD = 3.3V, TA = +25NC.) (Notes 3, 6) (Figure 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Serial Clock Frequency
Bus Free Time Between STOP
and START Conditions
fSCL
tBUF
(Note 7)
DC
400
kHz
1.3
Fs
START Condition Hold Time
STOP Condition Setup Time
Clock Low Period
Clock High Period
START Condition Setup Time
Data Setup Time
Data Out Hold Time
Data In Hold Time
Maximum Receive SCL/SDA Rise
Time
tHD:STA
tSU:STO
tLOW
tHIGH
tSU:STA
tSU:DAT
tDH
tHD:DAT
tR
90% of SCL to 10% of SDA
90% of SCL to 90% of SDA
10% of SDA to 10% of SCL
(Note 8)
10% of SCL to 10% of SDA (Note 8)
(Note 9)
0.6
Fs
600
ns
1.3
Fs
0.6
Fs
100
ns
100
ns
100
ns
0
0.9
Fs
300
ns
Minimum Receive SCL/SDA Rise
Time
Maximum Receive SCL/SDA Fall
Time
tR
(Note 9)
tF
(Note 9)
20 +
0.1CB
ns
300
ns
Minimum Receive SCL/SDA Fall
Time
Transmit SDA Fall Time
tF
(Note 9)
tF
(Note 9)
20 +
0.1CB
ns
20 +
0.1CB
250
ns
Maxim Integrated
3
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