TMP411
SBOS383A − FEBRUARY 2007
±1°C
Remote and Local TEMPERATURE SENSOR
with N-Factor and Series Resistance Correction
FEATURES
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
±1°C
REMOTE DIODE SENSOR
±1°C
LOCAL TEMPERATURE SENSOR
PROGRAMMABLE NON-IDEALITY FACTOR
SERIES RESISTANCE CANCELLATION
ALERT FUNCTION
PROGRAMMABLE RESOLUTION: 9 to 12 Bits
PROGRAMMABLE THRESHOLD LIMITS
TWO-WIRE/SMBus
SERIAL INTERFACE
MINIMUM AND MAXIMUM TEMPERATURE
MONITORS
MULTIPLE INTERFACE ADDRESSES
ALERT/THERM2 PIN CONFIGURATION
DIODE FAULT DETECTION
DESCRIPTION
The TMP411 is a remote temperature sensor monitor with
a built-in local temperature sensor. The remote
temperature sensor diode-connected transistors are
typically low-cost, NPN- or PNP-type transistors or diodes
that are an integral part of microcontrollers,
microprocessors, or FPGAs.
Remote accuracy is
±1°C
for multiple IC manufacturers,
with no calibration needed. The Two-Wire serial interface
accepts SMBus write byte, read byte, send byte, and
receive byte commands to program the alarm thresholds
and to read temperature data.
Features that are included in the TMP411 are: series
resistance cancellation, programmable non-ideality factor,
programmable resolution, programmable threshold limits,
minimum and maximum temperature monitors, wide
remote temperature measurement range (up to +150°C),
diode fault detection, and temperature alert function.
The TMP411 is available in both MSOP-8 and SO-8
(available Q1 2007) packages.
APPLICATIONS
LCD/DLP/LCOS PROJECTORS
SERVERS
INDUSTRIAL CONTROLLERS
CENTRAL OFFICE TELECOM EQUIPMENT
DESKTOP AND NOTEBOOK COMPUTERS
STORAGE AREA NETWORKS (SAN)
V+
INDUSTRIAL AND MEDICAL
1
V+
EQUIPMENT
5
GND
PROCESSOR/FPGA
TEMPERATURE MONITORING
4
6
THERM
ALERT/THERM2
TMP411
Interrupt
Configuration
Consecutive Alert
Configuration Register
Remote Temp High Limit
N−Factor
Correction
Status Register
Remote THERM Limit
Remote Temp Low Limit
Local
Temperature
Register
T
L
THERM Hysteresis Register
Local Temp High Limit
Local THERM Limit
Conversion Rate
Register
Temperature
Comparators
T
R
Remote Temperature Min/Max Register
Manufacturer ID Register
Device ID Register
Configuration Register
Resolution Register
Local Temp Low Limit
Local Temperature Min/Max Register
Remote
Temperature
Register
D+ 2
3
D
−
8
SCL
7
SDA
Bus Interface
Pointer Register
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
DLP is a registered trademark of Texas Instruments. SMBus is a trademark of Intel Corp.
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
2006−2007, Texas Instruments Incorporated
www.ti.com
TMP411
www.ti.com
SBOS383A − FEBRUARY 2007
ABSOLUTE MAXIMUM RATINGS
(1)
Power Supply, V
S
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V
Input Voltage, pins 2, 3, 4 only . . . . . . . . . . . . . −0.5V to V
S
+ 0.5V
Input Voltage, pins 6, 7, 8 only . . . . . . . . . . . . . . . . . . . −0.5V to 7V
Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
Operating Temperature Range . . . . . . . . . . . . . . . −55°C to +127°C
Storage Temperature Range . . . . . . . . . . . . . . . . . −60°C to +130°C
Junction Temperature (TJ max) . . . . . . . . . . . . . . . . . . . . . . +150°C
ESD Rating:
Human Body Model (HBM) . . . . . . . . . . . . . . . . . . . . . . . 3000V
Charged Device Model (CDM) . . . . . . . . . . . . . . . . . . . . 1000V
Machine Model (MM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200V
(1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods
may degrade device reliability. These are stress ratings only, and
functional operation of the device at these or any other conditions
beyond those specified is not supported.
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be
handled with appropriate precautions. Failure to observe
proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to
complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could
cause the device not to meet its published specifications.
ORDERING INFORMATION
(1)
PRODUCT
TMP411A
TMP411B
DESCRIPTION
Remote Junction Temperature Sensor
Remote Junction Temperature Sensor
I
2
C ADDRESS
100 1100
100 1101
PACKAGE-LEAD
MSOP-8
SO-8(2)
MSOP-8
SO-8(2)
PACKAGE
DESIGNATOR
DGK
D
DGK
D
PACKAGE
MARKING
411A
T411A
411B
T411B
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI web site
at www.ti.com.
(2) Available Q1 2007.
PIN CONFIGURATION
Top View
MSOP, SO
PIN ASSIGNMENTS
PIN
1
2
NAME
V+
D+
D−
THERM
GND
ALERT/THERM2
DESCRIPTION
Positive supply (2.7V to 5.5V)
Positive connection to remote temperature
sensor
Negative connection to remote temperature
sensor
Thermal flag, active low, open-drain;
requires pull-up resistor to V+
Ground
Alert (reconfigurable as second thermal
flag), active low, open-drain; requires
pull-up resistor to V+
Serial data line for SMBus, open-drain;
requires pull-up resistor to V+
Serial clock line for SMBus, open-drain;
requires pull-up resistor to V+
TMP411
V+
D+
D−
THERM
1
2
3
4
8
7
6
5
SCL
SDA
3
4
5
ALERT/THERM2
GND
6
7
8
SDA
SCL
2
TMP411
www.ti.com
SBOS383A − FEBRUARY 2007
ELECTRICAL CHARACTERISTICS
At T
A
= −40°C to +125°C and V
S
= 2.7V to 5.5V, unless otherwise noted.
TMP411
PARAMETERS
TEMPERATURE ERROR
Local Temperature Sensor
Remote Temperature Sensor
(1)
TE
LOCAL
TE
REMOTE
T
A
= −40°C to +125°C
T
A
= +15°C to +85°C, V
S
= 3.3V
T
A
= +15°C to +75°C, T
D
= −40°C to +150°C, V
S
= 3.3V
T
A
= −40°C to +100°C, T
D
= −40°C to +150°C, V
S
= 3.3V
T
A
= −40°C to +125°C, T
D
= −40°C to +150°C
V
S
= 2.7V to 5.5V
105
9
12
Series Resistance 3kΩ Max
120
60
12
6
1.008
2.1
0.8
500
6
−1
3
25
30
3.4
35
1
0.4
1
+1
±1.25
±0.0625
±0.0625
±1
±3
±0.2
115
±2.5
±1
±1
±3
±5
±0.5
125
12
°C
°C
°C
°C
°C
°C/V
ms
Bits
Bits
µA
µA
µA
µA
CONDITIONS
MIN
TYP
MAX
UNITS
vs Supply
Local/Remote
TEMPERATURE MEASUREMENT
Conversion Time (per channel)
Resolution
Local Temperature Sensor (programmable)
Remote Temperature Sensor
Remote Sensor Source Currents
High
Medium High
Medium Low
Low
Remote Transistor Ideality Factor
SMBus INTERFACE
Logic Input High Voltage (SCL, SDA)
Logic Input Low Voltage (SCL, SDA)
Hysteresis
SMBus Output Low Sink Current
Logic Input Current
SMBus Input Capacitance (SCL, SDA)
SMBus Clock Frequency
SMBus Timeout
SCL Falling Edge to SDA Valid Time
DIGITAL OUTPUTS
Output Low Voltage
High-Level Output Leakage Current
ALERT/THERM2 Output Low Sink Current
THERM Output Low Sink Current
POWER SUPPLY
Specified Voltage Range
Quiescent Current
η
V
IH
V
IL
TMP411 Optimized Ideality Factor
V
V
mV
mA
µA
pF
MHz
ms
µs
V
µA
mA
mA
V
µA
µA
µA
µA
µA
V
V
°C
°C
°C/W
V
OL
I
OH
I
OUT
= 6mA
V
OUT
= V
S
ALERT/THERM2 Forced to 0.4V
THERM Forced to 0.4V
0.15
0.1
6
6
2.7
V
S
I
Q
0.0625 Conversions per Second
Eight Conversions per Second
Serial Bus Inactive, Shutdown Mode
Serial Bus Active, f
S
= 400kHz, Shutdown Mode
Serial Bus Active, f
S
= 3.4MHz, Shutdown Mode
2.3
Undervoltage Lock Out
Power-On Reset Threshold
TEMPERATURE RANGE
Specified Range
Storage Range
Thermal Resistance
MSOP-8, SO-8
POR
−40
−60
28
400
3
90
350
2.4
1.6
5.5
30
475
10
2.6
2.3
+125
+130
150
(1) Tested with less than 5Ω effective series resistance and 100pF differential input capacitance.
3
TMP411
www.ti.com
SBOS383A − FEBRUARY 2007
TYPICAL CHARACTERISTICS
At T
A
= +25°C and V
S
= 5.0V, unless otherwise noted.
REMOTE TEMPERATURE ERROR
vs TEMPERATURE
3
Remote Temperature Error (_C)
2
1
0
−1
−2
−3
−50
V
S
= 3.3V
T
REMOTE
= +25_ C
30 Typical Units Shown
η
= 1.008
3.0
V
S
= 3.3V
Local Temperature Error (_C)
2.0
1.0
0
−
1.0
−
2.0
−
3.0
LOCAL TEMPERATURE ERROR
vs TEMPERATURE
50 Units Shown
−25
0
25
50
75
100
125
−
50
−
25
0
25
50
75
100
125
Ambient Temperature, T
A
(_ C)
Ambient Temperature, T
A
(
_
C)
Figure 1.
REMOTE TEMPERATURE ERROR
vs LEAKAGE RESISTANCE
60
Remote Temperature Error (_C)
40
20
0
−20
−40
−60
0
5
10
15
20
25
30
Leakage Resistance (MΩ )
R −V
S
Remote Temperature Error (
_
C)
2.0
1.5
1.0
0.5
0
−
0.5
−
1.0
−
1.5
−
2.0
Figure 2.
REMOTE TEMPERATURE ERROR vs SERIES RESISTANCE
(Diode−Connected Transistor, 2N3906 PNP)
V
S
= 2.7V
R −GND
V
S
= 5.5V
0
500
1000
1500
2000
2500
3000
3500
R
S
(Ω)
Figure 3.
REMOTE TEMPERATURE ERROR vs SERIES RESISTANCE
(GND Collector−Connected Transistor, 2N3906 PNP)
2.0
Remote Temperature Error (
_
C)
Remote Temperature Error (_C)
1.5
V
S
= 2.7V
1.0
0.5
0
−
0.5
−
1.0
−
1.5
−
2.0
Figure 4.
REMOTE TEMPERATURE ERROR
vs DIFFERENTIAL CAPACITANCE
3
2
1
0
−1
−2
−3
V
S
= 5.5V
0
500
1000
1500
2000
2500
3000
3500
0
0.5
1.0
1.5
2.0
2.5
3.0
R
S
(Ω)
Capacitance (nF)
Figure 5.
4
Figure 6.
TMP411
www.ti.com
SBOS383A − FEBRUARY 2007
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C and V
S
= 5.0V, unless otherwise noted.
TEMPERATURE ERROR
vs POWER−SUPPLY NOISE FREQUENCY
25
20
Temperature Error (_C)
15
10
5
0
−5
−10
−15
−20
−25
0
5
Frequency (MHz)
10
15
Local 100mV
PP
Noise
Remote 100mV
PP
Noise
Local 250mV
PP
Noise
Remote 250mV
PP
Noise
I
Q
(µA)
500
450
400
350
300
250
200
150
100
50
0
0.0625
0.125
QUIESCENT CURRENT
vs CONVERSION RATE
V
S
= 5.5V
V
S
= 2.7V
0.25
0.5
1
2
4
8
Conversion Rate (conversions/sec)
Figure 7.
SHUTDOWN QUIESCENT CURRENT
vs SCL CLOCK FREQUENCY
500
450
400
350
I
Q
(µA)
I
Q
(
µ
A)
300
250
200
150
100
50
0
1k
10k
100k
1M
SCL CLock Frequency (Hz)
V
S
= 3.3V
10M
2
1
0
2.5
3.0
V
S
= 5.5V
6
5
4
3
8
7
Figure 8.
SHUTDOWN QUIESCENT CURRENT
vs SUPPLY VOLTAGE
3.5
4.0
V
S
(V)
4.5
5.0
5.5
Figure 9.
Figure 10.
5
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