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
2015-2016 Microchip Technology Inc. DS20005426B-page 5
MCP9600
INPUT/OUTPUT PIN DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, T
A
= -40°C to +125°C
(where: T
A
=T
C
, defined as Device Ambient Temperature).
Parameters Sym. Min. Typ. Max. Units Conditions
Serial Input/Output and I
2
C Slave Address Input (ADDR)
Input (SCL, SDA)
High-Level Voltage V
IH
0.7V
DD
——V
Low-Level Voltage V
IL
——0.3V
DD
V
Input Current I
LEAK
—— ±2µA
Output (SDA)
Low-Level Voltage V
OL
——0.4VI
OL
= 3 mA
High-Level Current (leakage) I
OH
—— 1µAV
OH
= V
DD
Low-Level Current I
OL
6——mAV
OL
= 0.6V
Capacitance C
IN
—5 —pF
I
2
C Slave Address Selection Levels (Note 1)
Command Byte <1100 000x>V
ADDR
GND — — V Address = 0
Command Byte <1100 001x>V
ADDR_L
(Note 2)
V
ADDR_TYP
(Note 2)
V
ADDR_H
(Note 2)
Address = 1
Command Byte <1100 010x>Address = 2
Command Byte <1100 011x>Address = 3
Command Byte <1100 100x>Address = 4
Command Byte <1100 101x>Address = 5
Command Byte <1100 110x>Address = 6
Command Byte <1100 111x>——V
DD
Address = 7
SDA and SCLK Inputs
Hysteresis V
HYST
—0.05V
DD
—VV
DD
> 2V
Spike Suppression T
SP
—50 —ns
Note 1: The ADDR pin can be tied to V
DD
or V
SS
. For additional slave addresses, resistive divider network can be
used to set voltage levels that are rationed to V
DD
. The device supports up to 8 levels (see Section 6.3.1
“I2C Addressing” for recommended resistor values).
2: V
ADDR_TYP
=Address*V
DD
/8 + V
DD
/16,
V
ADDR_L
=V
ADDR_TYP
-V
DD
/32, and
V
ADDR_H
=V
ADDR_TYP
+V
DD
/32 (where: Address = 1, 2, 3, 4, 5, 6).
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground.
Parameters Sym. Min. Typ. Max. Units Conditions
Temperature Ranges
Specified Temperature Range T
A
-40 — +125 °C Note 1
Operating Temperature Range T
A
-40 — +125 °C
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
Thermal Resistance, MQFN
JA
— 38.8 — °C/W
Note 1: Operation in this range must not cause T
J
to exceed the Maximum Junction Temperature (+150°C).