Thermistor-to-Digital Converter
MAX6682
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
to GND) .................................-0.3V to +6V
SO, SCK,
CS,
R-, R+ to GND ....................-0.3V to (V
CC
+ 0.3V)
R+ Current ........................................................................鹵20mA
R- Current ...........................................................................鹵1mA
SCK,
CS,
SO Current .........................................-1mA to +50mA
ESD Protection (Human Body Model) .............................鹵2000V
Continuous Power Dissipation (T
A
= +70擄C)
8-Pin 碌MAX (derate 4.1mW/擄C above +70擄C) ............ 328mW
Operating Temperature Range
(T
MIN
to T
MAX
) ...............................................-55擄C to +125擄C
Storage Temperature Range .............................-65擄C to +150擄C
Junction Temperature .....................................................+150擄C
Stresses beyond those listed under 鈥淎bsolute Maximum Ratings鈥?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擄C to +125擄C, unless otherwise noted. Typical values are specified at V
CC
= 3.3V and T
A
= +25擄C.) (Note 1)
PARAMETER
Supply Voltage
ADC Total Unadjusted Error
ADC Conversion Time
R- Input Impedance
R- Leakage Current
Conversion Rate
Reference Voltage Output
Reference Load Regulation
Reference Supply Regulation
Conversion Supply Current
Average Supply Current
Standby Current
Idle Current
SERIAL INTERFACE
Input Low Voltage
Input High Voltage
Input Leakage Current
Output High Voltage
Output Low Voltage
V
IL
V
IH
I
LEAK
V
OH
V
OL
V
IN
= GND or V
CC
I
SOURCE
= 1.6mA
I
SINK
= 1.6mA
V
CC
-
0.4
0.4
0.8 x
V
CC
1
0.2 x
V
CC
V
V
碌A(chǔ)
V
V
I
C
I
A
I
S
I
ID
During conversion, no load
0.5 conversions/s, no load
CS
low, SCK inactive
CS
high, analog circuits off
V
REF
I
LOAD
= 1mA
0 < I
LOAD
< 2mA
1.10
0
0.7
220
17
3
10
300
29
7
17
SYMBOL
V
CC
TUE
t
CONV
Z
IN
1
1
0.5
1.22
1.40
0.1
50
DOUT = 768.935 x (V
REXT
/V
R+
) - 134.0923;
V
IN
> 0.1V
REF
CONDITIONS
MIN
3.0
-3
64
TYP
MAX
5.5
+3
80
UNITS
V
LSB
ms
M鈩?/div>
nA
Hz
V
%/mA
mV/V
碌A(chǔ)
碌A(chǔ)
碌A(chǔ)
碌A(chǔ)
2
_______________________________________________________________________________________
1
2
3
4
5
6
7
8
9
