MCP9804 Datasheet PDF - Microchip Technology

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MCP9804
Microchip Technology

Part Number MCP9804
Description Accuracy Digital Temperature Sensor
Page 30 Pages


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MCP9804
±0.25°C Typ. Accuracy Digital Temperature Sensor
Features
• Accuracy:
- ±0.25°C (typical) from -40°C to +125°C
- ±1°C (maximum) from -40°C to +125°C
• User Selectable Measurement Resolution:
- 0.5°C, 0.25°C, 0.125°C, 0.0625°C
• User Programmable Temperature Limits:
- Temperature Window Limit
- Critical Temperature Limit
• User Programmable Temperature Alert Output
• Operating Voltage Range: 2.7V to 5.5V
• Operating Current: 200 µA (typical)
• Shutdown Current: 0.1 µA (typical)
• 2-wire Interface: I2C/SMBus Compatible
• Available Packages: 2x3 DFN-8, MSOP-8
Typical Applications
• General Purpose
• Industrial Applications
• Industrial Freezers and Refrigerations
• Food Processing
• Personal Computers and Servers
• PC Peripherals
• Consumer Electronics
• Hand-held/Portable Devices
Temperature Accuracy
40%
30%
TA = -40°C to 125°C
VDD = 3.3V
2787 units
20%
10%
0%
Temperature Accuracy (°C)
Description
Microchip Technology Inc.’s MCP9804 digital
temperature sensor converts temperatures between
-40°C and +125°C to a digital word with ±0.25°C/±1°C
(typical/maximum) accuracy.
The MCP9804 comes with user-programmable
registers that provide flexibility temperature sensing
applications. The registers allow user-selectable
settings such as Shutdown or low-power modes and
the specification of temperature Alert window limits and
Critical output limits. When the temperature changes
beyond the specified boundary limits, the MCP9804
outputs an Alert signal. The user has the option of
setting the Alert output signal polarity as an active-low
or active-high comparator output for thermostat
operation, or as temperature Alert interrupt output for
microprocessor-based systems. The Alert output can
also be configured as a Critical temperature output
only.
This sensor has an industry standard 100 kHz 2-wire,
SMBus/I2C compatible serial interface, allowing up to
eight or sixteen sensors to be controlled with a single
serial bus (see Table 3-2 for available Address codes).
These features make the MCP9804 ideal for
sophisticated multi-zone temperature-monitoring
applications.
Package Types
8-Pin 2x3 DFN *
SDA 1
8 VDD
SCL 2 EP 7 A0
Alert 3 9 6 A1
GND 4
5 A2
8-Pin MSOP
SDA 1
8 VDD
SCL 2
7 A0
Alert 3
GND 4
6 A1
5 A2
* Includes Exposed Thermal Pad (EP); see Table 3-1.
© 2009 Microchip Technology Inc.
DS22203A-page 1



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MCP9804
NOTES:
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DS22203A-page 2
© 2009 Microchip Technology Inc.



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MCP9804
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings †
VDD.................................................................................. 6.0V
Voltage at All Input/Output Pins .............. GND – 0.3V to 6.0V
Storage Temperature ....................................-65°C to +150°C
Ambient Temperature with Power Applied ....-40°C to +125°C
Junction Temperature (TJ) .......................................... +150°C
ESD Protection on All Pins (HBM:MM) ................ (4 kV:400V)
Latch-Up Current at Each Pin (25°C)....................... ±200 mA
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†Notice: Stresses above those listed under “Maximum
ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
TEMPERATURE SENSOR DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, and TA = -40°C to
+125 °C.
Parameters
Sym Min Typ Max Unit
Conditions
Temperature Sensor Accuracy
+40°C < TA +125°C
TACY
Temperature Conversion Time
-1.0 ±0.25 +1.0
°C VDD = 3.3V
0.5°C/bit
0.25°C/bit
tCONV — 30
— 65
ms 33s/sec (typical)
ms 15s/sec (typical)
0.25°C/bit
— 130
ms 7s/sec (typical)
0.25°C/bit
Power Supply
— 250
ms 4s/sec (typical)
Operating Voltage Range
VDD 2.7 — 5.5 V
Operating Current
IDD — 200 400 µA
Shutdown Current
ISHDN
— 0.1
2
µA
Power On Reset (POR)
VPOR
— 2.2
V Threshold for falling VDD
Power Supply Rejection,
Δ°C/ΔVDD — -0.1
— °C/V VDD = 2.7V to 5.5V
TA = +25°C
— ±0.15 —
°C VDD = 3.3V+150 mVPP AC (0 to 1 MHz)
Alert Output (Open-Drain output, external pull-up resistor required), see Section 5.2.3
High-level Current (leakage)
IOH
——
1
Low-level Voltage
VOL — — 0.4
Thermal Response, from +25°C (Air) to +125°C (oil bath)
µA VOH = VDD (Active-Low, Pull-up Resistor)
V IOL= 3 mA (Active-Low, Pull-up Resistor)
DFN-8
MSOP-8
tRES
— 0.7
— 1.4
s Time to 63% (89°C)
s
© 2009 Microchip Technology Inc.
DS22203A-page 3



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MCP9804
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DIGITAL INPUT/OUTPUT PIN CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, and TA = -40°C to
+125 °C.
Parameters
Sym Min Typ Max Units
Conditions
Serial Input/Output (SCL, SDA, A0, A1, A2)
Input
High-level Voltage
Low-level Voltage
Input Current
Output (SDA)
Low-level Voltage
High-level Current (leakage)
Low-level Current
VIH 2.1
VIL
IIN
VOL
IOH
IOL 6
— —V
— 0.8 V
— ±5 µA
— 0.4 V IOL= 3 mA
— 1 µA VOH = 5.5V
— — mA VOL = 0.6V
SDA and SCL Inputs
Hysteresis
Spike Suppression
Capacitance
VHYST
tSP
CIN
GRAPHICAL SYMBOL DESCRIPTION
0.5 —
— 50
5—
Voltage VDD
INPUT
VIH
Voltage VDD
VIL VOL
V
ns
pF
OUTPUT
Current
IIN
time
Current
IOL
IOH
time
TEMPERATURE CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V and GND = Ground.
Parameters
Sym Min Typ Max Units
Conditions
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
TA -40 — +125 °C Note 1
TA -40 — +125 °C
TA -65 — +150 °C
Thermal Resistance, 8L-DFN
θJA — 41 — °C/W
Thermal Resistance, 8L-MSOP
θJA — 206 — °C/W
Note 1: Operation in this range must not cause TJ to exceed Maximum Junction Temperature (+150°C).
DS22203A-page 4
© 2009 Microchip Technology Inc.



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