Datasheet

MAX6698
7-Channel Precision Remote-Diode, Thermistor,
and Local Temperature Monitor
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V
CC
, SCL, SDA, ALERT, OVERT to GND ................-0.3V to +6V
DXP_ to GND..............................................-0.3V to (V
CC
+ 0.3V)
DXN_ to GND ........................................................-0.3V to +0.8V
THER_ to GND..........................................................-0.3V to +6V
VREF to GND............................................................-0.3V to +6V
SDA, ALERT, OVERT Current .............................-1mA to +50mA
DXN Current .......................................................................±1mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP
(derate 8.3mW/°C above +70°C) ......................666.7mW(E16-1)
16-Pin TSSOP
(derate 9.4mW/°C above +70°C)....................754.7mW(U16-1)
ESD Protection (all pins, Human Body Model) ................±2000V
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
CC
= +3.0V to +5.5V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage V
CC
3.0 5.5 V
Standby Supply Current I
SS
SMBus static 30 µA
Operating Current I
CC
During conversion
500 1000
µA
Channel 1 only 11
Temperature Resolution
Other diode channels 8
Bits
T
A
= T
RJ
= +60°C to +100°C -1.0 +1.0
T
A
= T
RJ
= 0°C to +125°C
-3.0 +3.0
Remote Temperature Accuracy V
CC
= 3.3V
DXN_ grounded,
T
RJ
= T
A
= 0°C to +85°C
±2.5
o
C
T
A
= +60°C to +100°C
-2.5 +2.5
Local Temperature Accuracy V
CC
= 3.3V
T
A
= 0°C to +125°C
-3.5 +3.5
o
C
Supply Sensitivity of Temperature
Accuracy
±0.2
o
C/V
Resistance cancellation on 95
125 156
Remote Channel 1 Conversion
Time
t
CONV1
Resistance cancellation off
190 250 312
ms
Remote Channels 2 Through 6
Conversion Time
t
CONV_
95
125 156
ms
High level 80
100 120
Remote-Diode Source Current I
RJ
Low level 8 10 12
µA
Undervoltage-Lockout Threshold
UVLO Falling edge of V
CC
disables ADC 2.3
2.80 2.95
V
Undervoltage-Lockout Hysteresis
90 mV
Power-On Reset (POR) Threshold
V
CC
falling edge 1.2 2.0 2.5 V
POR Threshold Hysteresis 90 mV
THERMISTOR CONVERSION
Voltage-Measurement Accuracy
-1 +1
%Full
scale
Conversion Time 31 ms
Thermistor Reference Voltage V
REF
1V