Datasheet

MAX31725/MAX31726
±0.5°C Local Temperature Sensors
7Maxim Integrated
Block Diagram
I
2
C BLOCK
DIGITAL LOGIC BLOCK
DATA REGISTER BLOCK
TEMPERATURE CORE BLOCK
POR
BLOCK
0
MSB LSB
DATA POINTER
SERIAL LOGIC
SDA
SCL
ADDRESS
DECODER
0 0 0 0 0 D1 D0
D1 D0
0 0
STEMP
CONFIG
MSB LSB
MS BYTE
MSB LSB
3
MSB LSB
LS BYTE
2
6
2
5
2
4
2
3
2
2
2
1
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
2
-8
ST
HYST
MSB
TEMPERATURE
SENSOR
16-BIT
Σ∆ ADC
LSB
MS BYTE
MSB LSB
LS BYTE
2
6
2
5
2
4
2
3
2
2
2
1
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
2
-8
ST
OS
2
6
2
5
2
4
2
3
2
2
2
1
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
2
-8
T
OS
REGISTER
DIGITAL
COMPARATOR
0 1
1 0
1 1
A0
A1
V
DD
GND
V
DD
A2
(RESET)
TEMP REGISTER
T
HYST
REGISTER
THERMOSTAT
LOGIC
FAULT
QUEUE
BITS
COMPARE/
INTERRUPT
BIT
OS
POLARITY
BIT
OS
N
OS
ACTIVATE
ONE
SHOT
TIMEOUT
DATA
FORMAT
FAULT
QUEUE
[1]
FAULT
QUEUE
[2]
OS
POLARITY
SHUTDOWN
2
VOLTAGE
REFERENCE
DIGITAL CONTROL
ONE-SHOT BIT
SHUTDOWN BIT
MAX31725
MAX31726
( ) MAX31726 ONLY.
COMPARATOR/
INTERRUPT