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.
APPLICATIONS
LCD/DLP/LCOS PROJECTORS The TMP411 is available in both MSOP-8 and SO-8 www.DataSheet4U.com SERVERS (available Q1 2007) packages. INDUSTRIAL CONTROLLERS CENTRAL OFFICE TELECOM EQUIPMENT DESKTOP AND NOTEBOOK COMPUTERS STORAGE AREA NETWORKS (SAN) 4 V+ THERM INDUSTRIAL AND MEDICAL 1 6 ALERT/THERM2 V+ TMP411 EQUIPMENT 5 GND Interrupt Consecutive Alert PROCESSOR/FPGA Configuration Configuration Register TEMPERATURE MONITORING Remote Temp High Limit
N−Factor Correction Status Register Remote THERM Limit Remote Temp Low Limit Local Temperature Register TL THERM Hysteresis Register Local Temp High Limit Local THERM Limit Conversion Rate Register D+ 2 Remote Temperature Register TR Remote Temperature Min/Max Register Manufacturer ID Register Device ID Register Configuration Register Resolution Register 8 SCL 7 SDA Bus Interface Pointer Register Temperature Comparators Local Temp Low Limit Local Temperature Min/Max Register
3 D−
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
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TMP411
www.ti.com SBOS383A − FEBRUARY 2007
ABSOLUTE MAXIMUM RATINGS(1)
Power Supply, VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V Input Voltage, pins 2, 3, 4 only . . . . . . . . . . . . . −0.5V to VS + 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 I2C 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 TA = −40°C to +125°C and VS = 2.7V to 5.5V, unless otherwise noted.
TMP411 PARAMETERS
TEMPERATURE ERROR Local Temperature Sensor Remote Temperature Sensor(1) TELOCAL TEREMOTE TA = −40°C to +125°C TA = +15°C to +85°C, VS = 3.3V TA = +15°C to +75°C, TD = −40°C to +150°C, VS = 3.3V TA = −40°C to +100°C, TD = −40°C to +150°C, VS = 3.3V TA = −40°C to +125°C, TD = −40°C to +150°C VS = 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 VIH VIL
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
VOL IOH
IOUT = 6mA VOUT = VS ALERT/THERM2 Forced to 0.4V THERM Forced to 0.4V
0.15 0.1 6 6 2.7
VS IQ
0.0625 Conversions per Second Eight Conversions per Second Serial Bus Inactive, Shutdown Mode Serial Bus Active, fS = 400kHz, Shutdown Mode Serial Bus Active, fS = 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 TA = +25°C and VS = 5.0V, unless otherwise noted.
REMOTE TEMPERATURE ERROR vs TEMPERATURE 3 Remote Temperature Error (_C) 2 1 0 −1 −2 −3 −50 VS = 3.3V TREMOTE = +25_ C 30 Typical Units Shown η = 1.008 3.0 VS = 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, TA (_ C)
Ambient Temperature, TA (_ 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 −VS 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)
VS = 2.7V
R −GND
VS = 5.5V
0
500
1000
1500
2000
2500
3000
3500
RS (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 VS = 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
VS = 5.5V
0
500
1000
1500
2000
2500
3000
3500
0
0.5
1.0
1.5
2.0
2.5
3.0
RS (Ω)
Capacitance (nF)
Figure 5.
4
Figure 6.
TMP411
www.ti.com SBOS383A − FEBRUARY 2007
TYPICAL CHARACTERISTICS (continued)
At TA = +25°C and VS = 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 100mVPP Noise Remote 100mVPP Noise Local 250mVPP Noise Remote 250mVPP Noise I Q (µA) 500 450 400 350 300 250 200 150 100 50 0 0.0625 0.125
QUIESCENT CURRENT vs CONVERSION RATE
VS = 5.5V
VS = 2.7V
0.25
