Data Sheet

MAX6675
Cold-Junction-Compensated K-Thermocouple-
to-Digital Converter (0°C to +1024°C)
_______________________________________________________________________________________ 3
10
8
6
4
2
0
04515 30 60 75 90
OUTPUT CODE ERROR
vs. AMBIENT TEMPERATURE
MAX6675 toc01
TEMPERATURE (°C)
OUTPUT CODE ERROR (LSB)
-5
0
5
10
-10 0 30 50
OUTPUT CODE ERROR
vs. VOLTAGE DIFFERENTIAL
MAX6675 toc02
VOLTAGE DIFFERENTIAL (mV)
OUTPUT CODE ERROR (LSB)
10 20 40
Typical Operating Characteristics
(V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.0V to +5.5V, T
A
= -20°C to +85°C, unless otherwise noted. Typical values specified at +25°C.) (Note 1)
Note 1: All specifications are 100% tested at T
A
= +25°C. Specification limits over temperature (T
A
= T
MIN
to T
MAX
) are guaranteed
by design and characterization, not production tested.
Note 2: Guaranteed by design. Not production tested.
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Output High Voltage V
OH
I
SOURCE
= 1.6mA
V
CC
-
0.4
V
Output Low Voltage V
OL
I
SINK
= 1.6mA 0.4 V
TIMING
Serial Clock Frequency f
SCL
4.3
MHz
SCK Pulse High Width t
CH
100
ns
SCK Pulse Low Width t
CL
100
ns
CSB Fall to SCK Rise t
CSS
C
L
= 10pF
100
ns
CSB Fall to Output Enable t
DV
C
L
= 10pF 100 ns
CSB Rise to Output Disable t
TR
C
L
= 10pF 100 ns
SCK Fall to Output Data
Valid
t
DO
C
L
= 10pF 100 ns