OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

MAX6612MXK+T

P1-P3P4-P5
General Description
The MAX6612 is a low-power precision analog output
temperature sensor in a tiny 5-pin SC70 package. The
sensitivity of the output voltage to temperature is a high
19.53mV/°C. This sensitivity provides superior noise
immunity. The voltage/temperature slope is chosen to
provide convenient bit weights when the MAX6612 dri-
ves the input of an ADC with a 2.5V or 5V reference.
The MAX6612 provides an analog voltage output propor-
tional to temperature. Accuracy is ±1.2°C (max) at +25°C,
±3.0 (max) from T
A
= 0°C to +70°C, and ±5.5°C (max)
from T
A
= -10°C to +125°C. Useful measurements can be
obtained at temperatures as high as +150°C. Self-heating
effects are negligible due to the low current consumption
of the part.
Unlike many analog temperature sensors, the MAX6612
is stable with large capacitive loads. Any capacitive
load greater than or equal to 1000pF yields stable oper-
ation, providing broad flexibility in board-level design.
The operating temperature range varies with the supply
voltage, with a higher supply voltage enabling a wider
temperature range. The MAX6612 can be used over a
range of -10°C to +125°C with a supply voltage of 3.3V
or greater. For applications with a supply voltage of
2.4V, the MAX6612 can be used over a temperature
range of -10°C to +70°C.
Applications
Base Stations
Industrial Equipment
Home Appliances
Battery Packs
Medical Instruments
Portable Equipment
GPS Equipment
Features
♦ Optimized for Use with ADCs
♦ High Temperature-to-Voltage Slope
♦ Able to Drive High-Capacitive Loads
♦ Operates Up to +150°C
♦ Low Current Consumption (35µA max)
♦ No Calibration Required
♦ Space-Saving SC70 Package
MAX6612
High-Slope, Low-Power, Analog Temperature
Sensor in an SC70 Package
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
MAX6612 MAX1137
V
CC
V
SUPPLY
V
DD
GND GND
OUT AIN_
C
S
C
LOAD
C
REF
SDA
SCL
R
PU1
R
PU2
Typical Application Circuit
19-2546; Rev 0; 7/02
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
TOP
MARK
MAX6612MXK-T -55°C to +150°C 5 SC70-5 ADG
GND
V
CC
OUT
15BA
MAX6612
SC70
TOP VIEW
2
34
Pin Configuration
OUTPUT VOLTAGE vs. AMBIENT TEMPERATURE
MAX6612 toc01
AMBIENT TEMPERATURE (°C)
OUTPUT VOLTAGE (mV)
1251007550250
500
1000
1500
2000
2500
3000
3500
0
-25 150
V
CC
= 5.5V
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX6612 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
5432
5
10
15
20
25
0
16
T
A
= +25°C
Typical Operating Characteristics
(V
CC
= 3.3V, C
S
= 0.1µF, C
LOAD
= 1000pF, unless otherwise specified.)
MAX6612
High-Slope, Low-Power, Analog Temperature
Sensor in an SC70 Package
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.4V to 5.5V, C
LOAD
= 1000pF, T
A
= -10°C to +150°C, unless otherwise specified.)
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: 100% production tested at +25°C. Guaranteed by design through temperature.
Note 2: T is in °C.
Note 3: Guaranteed by design.
V
CC
to GND..............................................................-0.3V to +6V
OUT to GND..................................................-0.3V to V
CC
+ 0.3V
ESD Protection (Human Body)...........................................2000V
Current into Any Pin ............................................................20mA
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW
Operating Temperature Range .........................-55°C to +150°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
T
A
= +25°C, V
CC
= 3.3V -1.2 +1.2
T
A
= +60°C to +70°C, V
CC
= 3.3V -3.0 +3.0
T
A
= +60°C to +100°C, V
CC
= 3.3V -4.3 +4.3
T
A
= -10°C to +125°C, V
CC
= 3.3V -5.5 +5.5
Temperature Error
V
OUT
= 0.4 + (0.01953
✕
T) –
(2
✕
10
-6
✕
T
2
)
(Notes 1, 2)
T
A
= -10°C to +150°C, V
CC
= 5.5V ±5
°C
Supply Voltage Range V
CC
2.4 2.3 5.5 V
Supply Current I
Q
No load 35 µA
Output Voltage V
OUT
T
A
= 0°C 400 mV
Sensor Gain (Average Slope) T
A
= -10°C to +150°C 19.53 mV/°C
Capacitive Load No sustained oscillations (Note 3) 1000 pF
Turn-On Time C
LOAD
= 1000pF 80 µs
Shutdown Current V
CC
< 0.8V 1 µA
Supply Sensitivity V
CC
= 2.4V to 5.5V 0.5 0.8 °C/V
Load Regulation I
OUT
= 2µA to 100µA 0.03 °C/µA
Detailed Description
The MAX6612 is an analog output temperature sensor
whose output voltage is a linear function of its die tem-
perature. The slope of the output voltage is 19.53mV/°C
and there is a 400mV offset at 0°C to allow measure-
ment of negative temperatures. The maximum supply
current is 35µA, and the supply voltage range is from
2.4V to 5.5V for the -10°C to +150°C temperature
range. The temperature error is less than ±1.2°C at T
A
= +25°C, ±3°C from T
A
= 0°C to +70°C, and ±4.5°C
from T
A
= -10°C to +125°C.
The operating temperature range varies with the supply
voltage with higher supply voltages enabling wider
temperature ranges. The MAX6612 can be used over a
range of -10°C to +125°C with a supply voltage of 3.3V
or greater. For applications with a supply voltage of
2.4V, the MAX6612 can be used over a temperature
range of -10°C to +70°C.
Transfer Function
The temperature-to-voltage transfer function has a lin-
ear positive slope and can be approximated by the
equation:
V
OUT
= 0.40V + (0.01953V/°C ✕ T°C) - (2 ✕ 10
-6
✕ T°C
2
)
where T is the MAX6612’s die temperature in °C.
Therefore:
T (°C) = (V
OUT
- 0.40V) / 0.01953V/°C
Applications Information
Sensing Circuit Board and
Ambient Temperatures
Temperature sensor ICs like the MAX6612 that sense
their own die temperatures must be mounted on or
close to the object whose temperature they are intend-
ed to measure. Because there is a good thermal path
between the SC70 package’s metal leads and the IC
die, the MAX6612 can accurately measure the temper-
ature 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 compo-
nent 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.
MAX6612
High-Slope, Low-Power, Analog Temperature
Sensor in an SC70 Package
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, C
S
= 0.1µF, C
LOAD
= 1000pF, unless otherwise specified.)
SUPPLY CURRENT
vs. AMBIENT TEMPERATURE
MAX6612 toc03
AMBIENT TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1251007550250-25-50
5
10
15
20
25
30
35
0
-75 150
V
CC
= 5.5V
V
CC
= 3.3V
V
CC
= 2.4V
STEP RESPONSE FROM
+25°C TO +100°C IN FLOURINERT BATH
MAX6612 toc04
1s/div
V
OUT
500mV/div
0
PIN NAME FUNCTION
1 A Must be connected to GND.
2 GND GND
3 OUT
Temperature Sensor Output. Connect a
capacitor (at least 1000pF) from this
pin to GND.
4V
CC
Power-Supply Input. Bypass V
CC
to
GND with a 0.1µF ceramic capacitor.
5 B Must be connected to GND.
Pin Description
_______________________________________________________________________________________ 3
P1-P3P4-P5

MAX6612MXK+T

Mfr. #:
Buy MAX6612MXK+T
Manufacturer:
Maxim Integrated
Description:
Board Mount Temperature Sensors Low-Power Analog Temperature Sensor
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet