MAX6667 Maxim Integrated Products, MAX6667 Datasheet
MAX6667
Manufacturer Part Number
MAX6667
Description
(MAX6666 / MAX6667) High-Accuracy PWM Output Temperature Sensors
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX6667.pdf
(7 pages)
www.DataSheet4U.com
The MAX6666/MAX6667 are high-accuracy, low-cost,
low-power temperature sensors with a single-wire
output. The MAX6666/MAX6667 convert the ambient
temperature into a ratiometric PWM output with temper-
ature information contained in the duty cycle of the out-
put square wave. The MAX6666 has a push-pull output
and the MAX6667 has an open-drain output.
The MAX6666/MAX6667 operate at supply voltages
from +3V to +5.5V. The typical unloaded supply current
at 5.0V is 200µA. Both devices feature a single-wire
output that minimizes the number of pins necessary to
interface with a microprocessor (µP). The output is a
square wave with a nominal frequency of 35Hz (±20%)
at +25°C. The output format is decoded as follows:
Where t
modulated by the temperature (Figure 1). The MAX6666/
MAX6667 operate from -40°C to +125°C and are available
in space-saving SOT23 packages.
19-2138; Rev 3; 8/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Process Control
Industrial
HVAC and Environmental Control
Automotive
µP and µC Temperature Monitoring
1
Temperature (°C) = 235 - (400 x t
MAX6666
MAX6667
is fixed with a typical value of 10ms and t
+3.3V
GND
V
CC
Typical Operating Circuit
High-Accuracy PWM Output Temperature
DOUT
________________________________________________________________ Maxim Integrated Products
General Description
t
1
t
2
Applications
1
INPUT TO
TIMER/COUNTER
) / t
2
µC
2
is
o Simple Single-Wire PWM Output
o ±1.0°C Accuracy at +25°C
o High Accuracy
o Operate Up to +125°C
o Low 200µA Typical Current Consumption
o Small SOT23 package
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
MAX6666AUT+T
MAX6667AUT+T
±1°C at T
±2.5°C at T
PART
A
TOP VIEW
D
GND
A
OUT
V
= +30°C
CC
= +10°C to +50°C
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
1
2
3
Ordering Information
+
MAX6666
MAX6667
SOT23
Pin Configuration
PIN-
PACKAGE
6 SOT23
6 SOT23
6 I.C.
5
4
Sensors
I.C.
I.C.
Features
AATG
MARK
AATF
TOP
1
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