MAX6675 Maxim, MAX6675 Datasheet
MAX6675
Manufacturer Part Number
MAX6675
Description
Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0C to +1024C)
Manufacturer
Maxim
Datasheet
1.MAX6675.pdf
(8 pages)
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The MAX6675 performs cold-junction compensation
and digitizes the signal from a type-K thermocouple.
The data is output in a 12-bit resolution, SPI™-compati-
ble, read-only format.
This converter resolves temperatures to 0.25°C, allows
readings as high as +1024°C, and exhibits thermocou-
ple accuracy of 8LSBs for temperatures ranging from
0°C to +700°C.
The MAX6675 is available in a small, 8-pin SO package.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
19-2235; Rev 1; 3/02
SPI is a trademark of Motorola, Inc.
Cold-Junction-Compensated K-Thermocouple-
Industrial
Appliances
HVAC
Automotive
________________________________________________________________ Maxim Integrated Products
General Description
0.1µF
to-Digital Converter (0°C to +1024°C)
Vcc
GND
T+
T-
Applications
MAX6675
SCK
SO
CS
o Direct Digital Conversion of Type -K
o Cold-Junction Compensation
o Simple SPI-Compatible Serial Interface
o 12-Bit, 0.25°C Resolution
o Open Thermocouple Detection
MAX6675ISA
Thermocouple Output
PART
MISO
TOP VIEW
SCK
SSB
MICROCONTROLLER
Typical Application Circuit
68HC11A8
GND
V
T+
CC
T-
-20°C to +85°C
TEMP RANGE
1
2
4
3
Ordering Information
MAX6675
Pin Configuration
SO
6
8
7
5
PIN-PACKAGE
8 SO
N.C.
SO
CS
SCK
Features
1
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