Datasheet
Table Of Contents
- Thermocouple EMF to Temperature Converter, ±1.5 °C Maximum Accuracy
- 1.0 Electrical Characteristics
- 2.0 Typical Performance Curves
- FIGURE 2-1: Typical Temperature Accuracy from NIST ITS-90 Database, Type K.
- FIGURE 2-2: Typical Temperature Accuracy from NIST ITS-90 Database, Type J.
- FIGURE 2-3: Typical Temperature Accuracy from NIST ITS-90 Database, Type N.
- FIGURE 2-4: Temperature Sensitivity with 18-Bit Resolution, Type K.
- FIGURE 2-5: Temperature Sensitivity with 18-Bit Resolution, Type J.
- FIGURE 2-6: Temperature Sensitivity with 18-Bit Resolution, Type N.
- FIGURE 2-7: Typical Temperature Accuracy from NIST ITS-90 Database, Type S.
- FIGURE 2-8: Typical Temperature Accuracy from NIST ITS-90 Database, Type R.
- FIGURE 2-9: Typical Temperature Accuracy from NIST ITS-90 Database, Type E.
- FIGURE 2-10: Temperature Sensitivity with 18-Bit Resolution, Type S.
- FIGURE 2-11: Temperature Sensitivity with 18-Bit Resolution, Type R.
- FIGURE 2-12: Temperature Sensitivity with 18-Bit Resolution, Type E.
- FIGURE 2-13: Typical Temperature Accuracy from NIST ITS-90 Database, Type T.
- FIGURE 2-14: Typical Temperature Accuracy from NIST ITS-90 Database, Type B.
- FIGURE 2-15: Input Offset Error Voltage (VIN+, VIN-).
- FIGURE 2-16: Temperature Sensitivity with 18-Bit Resolution, Type T.
- FIGURE 2-17: Temperature Sensitivity with 18-Bit Resolution, Type B.
- FIGURE 2-18: Full-Scale Gain Error.
- FIGURE 2-19: Input Noise, % of Full-Scale.
- FIGURE 2-20: Cold-Junction Sensor Temperature Accuracy.
- FIGURE 2-21: SDA and Alert Outputs, VOL across VDD.
- FIGURE 2-22: Integral Nonlinearity across VDD.
- FIGURE 2-23: Cold-Junction Sensor Temperature Accuracy Distribution.
- FIGURE 2-24: Alert Outputs, VOH across VDD.
- FIGURE 2-25: I2C Inactive IDD across VDD.
- FIGURE 2-26: I2C Active IDD across VDD.
- FIGURE 2-27: Shutdown Current, ISHDN across VDD.
- FIGURE 2-28: SDA, SCL and ADDR Input Pins Leakage Current, ILEAK across VDD.
- FIGURE 2-29: I2C Interface Clock Stretch Duration, tSTRETCH across VDD.
- FIGURE 2-30: Temperature Calculation Duration, tCALC change across VDD.
- 3.0 Pin Description
- 4.0 Serial Communication
- 4.1 2-Wire Standard Mode I2C Protocol-Compatible Interface
- TABLE 4-1: MCP9600 Serial Bus protocol descriptions
- FIGURE 4-1: Device Addressing.
- FIGURE 4-2: Clock Stretching.
- FIGURE 4-3: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-4: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-5: Timing Diagram to Set a Register Pointer and Read a Two Byte Data.
- FIGURE 4-6: Timing Diagram to Sequential Read all Registers Starting from TH Register.
- 5.0 Functional Description
- FIGURE 5-1: Functional Block Diagram.
- Register 5-1: REGISTER POINTER
- TABLE 5-1: Summary of Registers and Bit Assignments
- 5.1 Thermocouple Temperature Sensor Registers
- EQUATION 5-1: Temperature Conversion
- FIGURE 5-2: Thermocouple Register’s Block Diagram.
- Register 5-2: Thermocouple Temperature Register (Read only)
- EQUATION 5-2: Temperature Conversion
- FIGURE 5-3: Thermocouple Hot-Junction Register – TΔ Block Diagram.
- Register 5-3: HOT-Junction Temperature register (READ only)
- EQUATION 5-3: Temperature Conversion
- TABLE 5-2: Resolution vs. Conversion Time
- FIGURE 5-4: Thermocouple Cold-Junction Register – TC Block Diagram.
- Register 5-4: COLD-JUNCTION TEMPERATURE REGISTER
- TABLE 5-3: ADC Resolution
- FIGURE 5-5: Delta Sigma Analog to Digital Converter, ADC Core – Block Diagram.
- Register 5-5: SAMPLE: 24-bit Register
- 5.2 Sensor Status and Configuration Registers
- 5.3 Temperature Alert Registers
- TABLE 5-4: Alert Limit Registers
- Register 5-9: Alert Limits 1, 2, 3 and 4 registers
- FIGURE 5-8: Alert Limits Set to Detect TH and TC.
- FIGURE 5-9: Alert Limits Boundary Conditions and Output Characteristics when Set to Detect TH.
- TABLE 5-5: Alert Hysteresis Registers
- Register 5-10: Alert 1, 2, 3 and 4 Hysteresis Register
- FIGURE 5-10: Graphical Description of Alert Output Hysteresis Direction.
- TABLE 5-6: Alert CONFIG. Registers
- Register 5-11: Alert 1, 2, 3 and 4 Configuration Register
- Register 5-12: Device ID and revision ID register
- 6.0 Application Information
- 6.1 Layout Considerations
- 6.2 Thermal Considerations
- 6.3 Device Features
- TABLE 6-2: Recommended Resistor Values for I2C Addressing
- FIGURE 6-4: I2C Address Selection Implementation.
- FIGURE 6-5: Thermocouple Input Stage.
- FIGURE 6-6: Adding Open-Circuit Detection Resistors.
- FIGURE 6-7: Adding a Low-Pass Filter.
- FIGURE 6-8: Adding Open-Circuit Detection Resistors with an Input Low-Pass Filter.
- FIGURE 6-9: Adding Ferrite Beads.
- 7.0 Packaging Information
- Appendix A: Revision History
- Product Identification System
- Trademarks
- Worldwide Sales and Service
MCP9600
DS20005426B-page 6 2015-2016 Microchip Technology Inc.
FIGURE 1-1: Timing Diagram.
SENSOR SERIAL INTERFACE TIMING SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, GND = Ground, T
A
= -40°C to +125°C, V
DD
= 2.7V to 5.5V
and C
L
=80pF (Note 1).
Parameters Sym. Min. Max. Units
2-Wire I
2
C Interface
Serial Port Frequency f
SCL
10 100 kHz
Low Clock (Note 2)t
LOW
4700 — ns
High Clock t
HIGH
4000 — ns
Rise Time
(Note 3)t
R
— 1000 ns
Fall Time (Note 3)t
F
20 300 ns
Data in Setup Time (Note 2) t
SU:DAT
250 — ns
Data in Hold Time t
HD:DAT
0—ns
Start Condition Setup Time t
SU:STA
4700 — ns
Start Condition Hold Time t
HD:STA
4000 — ns
Stop Condition Setup Time t
SU:STO
4000 — ns
Bus Idle/Free t
B-FREE
10 — µs
Bus Capacitive Load C
b
—400pf
Clock Stretching t
STRETCH
60 — µs
Note 1: All values referred to V
IL MAX
and V
IH MIN
levels.
2: This device can be used in a Standard-mode I
2
C-bus system, but the requirement t
SU:DAT
250 ns must
be met.
3: Characterized, but not production tested.
t
SU
-
S
T
A
R
T
t
HD-START
t
SU-
D
ATA
t
SU-STOP
t
B-FREE
SC
L
SD
A
t
H
IGH
t
LOW
t
R
,
t
F
Start Condition
Data Transmission
Stop Condition
t
H
D
-
D
I
t
S
TRETCH
AC
K