Datasheet

13
Signal Chain Design Guide
Temperature Measurements Using 4 Channel ADC (MCP3424)
See Thermocouple Reference Design (TMPSNSRD-TCPL1)
12
14
13
11
10
9
8
MCP3424
Delta-Sigma ADC
V DD
SCL
SDA
Isothermal Block
(Cold Junction)
Thermocouple Sensor
Heat
SCL
0.1 µF
10 µF
SCL
SDA
V
DD
5 kΩ
To MCU
SDA
SCL
SDA
SCL
3
1
2
4
5
6
7
CH1+
CH1-
CH2+
CH2-
V
SS
V
DD
SDA
CH4-
CH4+
CH3-
CH3+
Adr1
Adr0
SCL
5 kΩ
SDA
Isothermal Block
(Cold Junction)
MCP9804
MCP9804
MCP9804
MCP9804
Temperature Sensing Solutions