19-2040; Rev 1; 6/01
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
General Description
Features
The MAX6607/MAX6608 precision, low-voltage, analogoutput temperature sensors are available in 5-pin SC70oOperate Down to 1.8V Supply
and SOT23 packages. The devices have a +1.8V tooLow Current Consumption (15µA max)+3.6V supply voltage range and 8µA supply currentover the -20°C to +85°C temperature range. AccuracyoSmall SC70 and SOT23 Packages
is ±0.6°C (typ) from TA= +20°C to +50°C and iso±2.0°C (max) Accuracy from +20°C to +50°C±0.7°C (typ) from TA= 0°C to +70°C.
The MAX6607/MAX6608 output voltage depends on itsoOptimized to Drive Capacitive Loads Up todie temperature and has a slope of 10mV/°C and an1000pF
offset of 500mV at 0°C.
________________________Applications
Ordering Information
Cellular PhonesDigital CamerasPARTTEMP. RANGEPIN-PACKAGEBattery PacksPortable Equipment
MAX6607IXK-T-20°C to +85°C5-SC70-5GPS Equipment
MAX6608IUK-T-20°C to +85°C5-SOT23-5Typical Application CircuitPin Configurations
VCCTOP VIEWVCCVCCMAX6607OUT15GNDN.C.15OUTCAMAX6608S = 0.2µFOUTADC INµCN.C.2MAX6607GND2MAX6608GND1nFA34VCCA34VCCGNDSC70SOT23GND________________________________________________________________Maxim Integrated Products1
For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX6607/MAX6608元器件交易网www.cecb2b.com
Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages MAX6607/MAX6608ABSOLUTE MAXIMUM RATINGS
VCCto GND..............................................................-0.3V to +6VOUT, A to GND...........................................-0.3V to (VCC+ 0.3V)ESD Protection (Human Body Model).............................>2000VCurrent into Any Pin............................................................10mAOutput Short-Circuit Duration.....................................ContinuousContinuous Power Dissipation (TA= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
Operating Temperature Range.........................-55°C to +125°CJunction Temperature......................................................+150°CStorage Temperature Range.............................-65°C to +150°CLead Temperature (soldering, 10s).................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +1.8V to +3.6V, CL= 1nF, TA= -20°C to +85°C, typical values are at TA= +25°C, unless otherwise noted.) (Note 1)PARAMETERSYMBOLCONDITIONSTA = +20°C to +50°CTemperature ErrorVCC = +2.4VTA = 0°C to +70°CTA = -10°C to +85°CTA = -20°C to -10°CSupply VoltageMaximum Rate of Rise of SupplyVoltage (Note 2)Supply CurrentOutput VoltageSensor Gain (Average Slope)Maximum Capacitive LoadLoad RegulationLine RegulationIOUT = -1.2µA to +20µAIQVOUTVCCTA = +70°CVCC < 2.8VNo loadTA = 0°CTA = +80°CTA = +85°CMIN-2.0-3.5-5.0-6.01.8100050010085001010.150.30.20.915µAmVmV/°CnF°C/µA°C/VV/sTYP0.60.71.01.5MAX+2.0+3.5+5.0+6.03.6V°CUNITSNote 1:All parameters are measured at TA= +25°C. Specifications over temperature range are guaranteed by design.Note 2:Not production tested, guaranteed by design.
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Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
Typical Operating Characteristics(VCC= +1.8V, CS= 0.1µF, CL= 1nF, unless otherwise noted.)
OUTPUT VOLTAGETEMPERATURE ERRORSUPPLY CURRENTvs. TEMPERATURE
vs. TEMPERATURE
vs. SUPPLY VOLTAGE
1400102c014
30occtoo tt8 08T8/0A = +25°C0120071.0//07760066126X66AXXM)AA)CM)MV°m1000(A 0.6µ10(R( EOTGRNARET800ERL EO0.2R8RUVU CTT U600AYL6PRTE-0.2PUPPO400MUEST4200-0.620
-1.0
0
-20-10010
20304050607080-20
-5
10
25
40
55
70
85012345
TEMPERATURE (°C)
TEMPERATURE (°C)SUPPLY VOLTAGE (V)
SUPPLY CURRENTOUTPUT VOLTAGESTEP RESPONSE FROM +25°C TO +80°C
vs. TEMPERATURE
vs. SUPPLY VOLTAGE
FLOURINERT BATH
12MAX6607/08 toc0645c0ot 80770TcA = +25°Cot 8/70/11076066X6AXM760A)VMACC = +3.3Vµ10OUT)( VTm750200mV/div
N( EERGR9UAT740CL YOL8VCC = +1.8VV PT730PUUPS7TUO72067100
5
700
-40-25-10
5
20
35
50
65
80
0
1
2
3
4
5
6
1s/div
TEMPERATURE (°C)SUPPLY VOLTAGE (V)
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MAX6607/MAX6608元器件交易网www.cecb2b.com
Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages MAX6607/MAX6608Pin DescriptionPINSC7012345SOT2351342NAMEFUNCTIONApplications Information Sensing Circuit Board and
Ambient Temperatures
Temperature sensor ICs like the MAX6607/MAX6608that sense their own die temperatures must be mount-ed on, or close to, the object whose temperature theyare intended to measure. Because there is a good ther-mal path between the package’s metal leads and theIC die, the MAX6607/MAX6608 can accurately measurethe temperature of the circuit board to which it is sol-dered. If the sensor is intended to measure the tempera-ture of a heat-generating component on the circuit board,it should be mounted as close as possible to that compo-nent and should share supply and ground traces (if theyare not noisy) with that component where possible. Thismaximizes the heat transfer from the component to thesensor.
The thermal path between the plastic package and thedie is not as good as the path through the leads, so theMAX6607/MAX6608, like all temperature sensors in plas-tic packages, are less sensitive to the temperature of thesurrounding air than they are to the temperature of theirleads. They can be successfully used to sense ambienttemperature if the circuit board is designed to track theambient temperature.
As with any IC, the wiring and circuits must be kept insu-lated and dry to avoid leakage and corrosion, especially ifthe part is operated at cold temperatures where conden-sation can occur.
The error introduced by the part self-heating is negligible.
OUTN.C.AVCCGNDTemperature Sensor OutputNot ConnectedMust be connected to GND.Supply Input. Decouple witha 0.1µF capacitor to GND.GroundDetailed DescriptionThe MAX6607/MAX6608 analog output temperaturesensors’ output voltage is a linear function of its dietemperature. The slope of the output voltage is10mV/°C, and there is a 500mV offset at 0°C to allowmeasurement of negative temperatures. The maximumsupply current is 15µA, and the supply voltage range isfrom +1.8V to +3.6V for the -20°C to +85°C tempera-ture range.
Transfer Function
The temperature-to-voltage transfer function has anapproximately linear positive slope and can bedescribed by the equation:
VOUT= 500mV + (T ✕10mV/°C)
where T is the die temperature of the MAX6607/MAX6608 in °C.Therefore:
T (°C) = (VOUT- 500mV) / 10mV/°C
Chip InformationTRANSISTOR COUNT: 111PROCESS: BiCMOS
4_______________________________________________________________________________________
元器件交易网www.cecb2b.com
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
Package Information
SPE.L5 ,07CS_______________________________________________________________________________________5
MAX6607/MAX6608元器件交易网www.cecb2b.com
Low-Voltage Analog Temperature Sensors in SC70 and SOT23 Packages MAX6607/MAX6608Package Information (contnued)
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
6_____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2001 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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