General Description
The MAX6607/MAX6608 precision, low-voltage, analog
output temperature sensors are available in 5-pin SC70
and SOT23 packages. The devices have a +1.8V to
+3.6V supply voltage range and 8µA supply current
over the -20°C to +85°C temperature range. Accuracy
is ±0.6°C (typ) from TA= +20°C to +50°C and is
±0.7°C (typ) from TA= 0°C to +70°C.
The MAX6607/MAX6608 output voltage depends on its
die temperature and has a slope of 10mV/°C and an
offset of 500mV at 0°C.
________________________Applications
Cellular Phones Digital Cameras
Battery Packs Portable Equipment
GPS Equipment
Features
♦ Operate Down to 1.8V Supply
♦ Low Current Consumption (15µA max)
♦ Small SC70 and SOT23 Packages
♦ ±2.0°C (max) Accuracy from +20°C to +50°C
♦ Optimized to Drive Capacitive Loads Up to
1000pF
MAX6607/MAX6608
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
________________________________________________________________ Maxim Integrated Products 1
Typical Application Circuit
19-2040; Rev 1; 6/01
Ordering Information
Pin Configurations
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.
PART TEMP. RANGE PIN-PACKAGE
MAX6607IXK-T -20°C to +85°C 5-SC70-5
MAX6608IUK-T -20°C to +85°C 5-SOT23-5
V
CC
CS = 0.2µF
GND
TOP VIEW
V
CC
MAX6607
MAX6608
A
OUT
GND
1nF
ADC IN
V
CC
µC
GND
OUT
15GND
N.C.
MAX6607
2
A
34
SC70
N.C.
15OUT
GND
V
CC
MAX6608
2
A
34
SOT23
V
CC
MAX6607/MAX6608
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= +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)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 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.
V
CC
to GND..............................................................-0.3V to +6V
OUT, A to GND...........................................-0.3V to (V
CC
+ 0.3V)
ESD Protection (Human Body Model) .............................>2000V
Current into Any Pin ............................................................10mA
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW
Operating Temperature Range .........................-55°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
CONDITIONS
UNITS
TA = 0°C to +70°C
Temperature Error VCC = +2.4V
T
A
= -20°C to -10°C
°C
Supply Voltage V
CC
V
TA = +70°C
TA = +80°C
Maximum Rate of Rise of Supply
Voltage (Note 2)
V
CC
< 2.8V
T
A
= +85°C
V/s
Supply Current I
Q
No load 8 15 µA
Output Voltage V
OUT
TA = 0°C
mV
Sensor Gain (Average Slope) 10
mV/°C
Maximum Capacitive Load 1nF
Load Regulation I
OUT
= -1.2µA to +20µA
°C/µA
Line Regulation
°C/V
SYMBOL
MIN TYP MAX
TA = +20°C to +50°C -2.0 0.6 +2.0
-3.5 0.7 +3.5
TA = -10°C to +85°C -5.0 1.0 +5.0
-6.0 1.5 +6.0
1.8 3.6
1000
500
100
500
0.15 0.2
0.3 0.9
MAX6607/MAX6608
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
_______________________________________________________________________________________ 3
Typical Operating Characteristics
(VCC= +1.8V, CS= 0.1µF, CL= 1nF, unless otherwise noted.)
OUTPUT VOLTAGE
vs. TEMPERATURE
1400
1200
1000
800
600
OUTPUT VOLTAGE (mV)
400
200
0
-20 0
-10 30
10 20
TEMPERATURE (°C)
40 50 60 70 80
MAX6607/08 toc01
TEMPERATURE ERROR (°C)
1.0
0.6
0.2
-0.2
-0.6
-1.0
-20 25 40-5 10 55 70 85
SUPPLY CURRENT
vs. TEMPERATURE
12
11
VCC = +3.3V
10
9
8
SUPPLY CURRENT (µA)
7
6
5
-25
-40
VCC = +1.8V
-10
5
TEMPERATURE (°C)
20 35 50 65 80
770
760
MAX6607/08 toc4
750
740
730
720
OUTPUT VOLTAGE (mV)
710
700
TA = +25°C
0231 456
TEMPERATURE ERROR
vs. TEMPERATURE
TEMPERATURE (°C)
OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
MAX6607/08 toc02
MAX6607/08 toc05
200mV/div
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
14
12
10
8
6
SUPPLY CURRENT (µA)
4
2
0
023145
SUPPLY VOLTAGE (V)
TA = +25°C
MAX6607/08 toc03
STEP RESPONSE FROM +25°C TO +80°C
FLOURINERT BATH
OUT
0
1s/div
MAX6607/08 toc06
Detailed Description
The MAX6607/MAX6608 analog output temperature
sensors’ output voltage is a linear function of its die
temperature. The slope of the output voltage is
10mV/°C, and there is a 500mV offset at 0°C to allow
measurement of negative temperatures. The maximum
supply current is 15µA, and the supply voltage range is
from +1.8V to +3.6V for the -20°C to +85°C temperature range.
Transfer Function
The temperature-to-voltage transfer function has an
approximately linear positive slope and can be
described by the equation:
V
OUT
= 500mV + (T ✕10mV/°C)
where T is the die temperature of the MAX6607/
MAX6608 in °C.
Therefore:
T (°C) = (V
OUT
- 500mV) / 10mV/°C
Applications Information
Sensing Circuit Board and
Ambient Temperatures
Temperature sensor ICs like the MAX6607/MAX6608
that sense their own die temperatures must be mounted on, or close to, the object whose temperature they
are intended to measure. Because there is a good thermal path between the package’s metal leads and the
IC die, the MAX6607/MAX6608 can accurately measure
the temperature of the circuit board to which it is soldered. If the sensor is intended to measure the temperature of a heat-generating component on the circuit board,
it should be mounted as close as possible to that component and should share supply and ground traces (if they
are not noisy) with that component where possible. This
maximizes the heat transfer from the component to the
sensor.
The thermal path between the plastic package and the
die is not as good as the path through the leads, so the
MAX6607/MAX6608, like all temperature sensors in plastic packages, are less sensitive to the temperature of the
surrounding air than they are to the temperature of their
leads. They can be successfully used to sense ambient
temperature if the circuit board is designed to track the
ambient temperature.
As with any IC, the wiring and circuits must be kept insulated and dry to avoid leakage and corrosion, especially if
the part is operated at cold temperatures where condensation can occur.
The error introduced by the part self-heating is negligible.
Chip Information
TRANSISTOR COUNT: 111
PROCESS: BiCMOS
MAX6607/MAX6608
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
4 _______________________________________________________________________________________
Pin Description
PIN
SC70 SOT23
1 5 OUT Temperature Sensor Output
2 1 N.C. Not Connected
3 3 A Must be connected to GND.
44V
5 2 GND Ground
NAME FUNCTION
CC
Supply Input. Decouple with
a 0.1µF capacitor to GND.
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
MAX6607/MAX6608
Package Information
,
_______________________________________________________________________________________ 5
5L.EPS
SC70
MAX6607/MAX6608
Low-Voltage Analog Temperature Sensors
in SC70 and SOT23 Packages
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. 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.
Package Information (contnued)
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