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MAX6654
1°C Accurate Remote/Local Temperature
Sensor with SMBus Serial Interface
ABSOLUTE MAXIMUM RATINGS
(All voltages are referenced to GND unless otherwise noted.)
V CC ..........................................................................-0.3V to +6V
DXP, ADD_ ................................................-0.3V to (VCC + 0.3V)
DXN ......................................................................-0.3V to +0.8V
SMBCLK, SMBDATA, ALERT , STBY .. ......................-0.3V to +6V
SMBDATA, ALERT Current .................................-1mA to +50mA
DXN Current ......................................................................±1mA
Continuous Power Dissipation (T A = +70°C)
16-Pin QSOP (derate 8.30mW/°C above +70°C).........667mW
Operating Temperature Range ........................-55°C to +125°C
Junction Temperature. .....................................................+150°C
Storage Temperature Range ............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
ESD Protection (all pins, Human Body Model). .................2000V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V CC = +3V to +5.5V, T A = -55°C to +125°C, unless otherwise noted. Typical values are at V CC = +3.3V and T A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TEMPERATURE-TO-DIGITAL CONVERTER
+60 ° C ≤ T A ≤ +100 ° C, V CC = +3.3V
-1.3
+1.3
Accuracy (Local Sensor)
Accuracy (Remote Sensor)
Line Regulation
Resolution (Legacy Mode)
Resolution (Extended Mode)
0 ° C ≤ T A ≤ +100 ° C, V CC = +3.3V
-55 ° C ≤ T A ≤ +120 ° C, V CC = +3.3V
+70 ° C ≤ T RJ ≤ +100 ° C, V CC = +3.3V (Note 1)
0 ° C ≤ T RJ ≤ +100 ° C, V CC = +3.3V (Note 1)
-55 ° C ≤ T RJ ≤ +120 ° C, V CC = +3.3V (Notes 1, 2)
Conversion rate >1Hz
Conversion rate ≤ 1Hz
-2
-5
-1
-2
-5
+1
+0.125
0.2
+8
+11
+2
+5
+1
+2
+5
0.5
° C
° C
° C
° C
Bits
° C
Bits
Undervoltage Lockout
Threshold
UVLO
V CC input, disables A/D conversion,
rising edge
+2.60
+2.80
+2.95
V
Undervoltage Lockout
Hysteresis
+90
mV
Supply Voltage Range
V CC
+3.0
+5.5
V
Power-On Reset (POR) Threshold
V CC , falling edge
+1.5
+2.0
+2.5
V
POR Threshold Hysteresis
+90
mV
Standby Current
Operating Current
Average Operating Current
SMBus static
During conversion
0.25 conversion/s (Note 3)
2 conversion/s (Note 3)
+3
+0.55
+40
+150
+10
+1
+70
+250
μA
mA
μA
Conversion Time
t CONV
From stop bit to conversion completed, in
legacy mode (Note 3)
+95
+125
+156
ms
Conversion Timing Error
± 25
%
Remote Diode Current
I RJ
High level
Low level
+80
+8
+100
+10
+120
+12
μA
2
Maxim Integrated
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