AD22100AT Analog Devices Inc, AD22100AT Datasheet

IC TEMP SENSOR VOUT TO-92-3

AD22100AT

Manufacturer Part Number
AD22100AT
Description
IC TEMP SENSOR VOUT TO-92-3
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD22100AT

Rohs Status
RoHS non-compliant
Sensing Temperature
-50°C ~ 150°C
Output Type
Voltage
Voltage - Supply
4 V ~ 6.5 V
Accuracy
±1°C
Package / Case
TO-226-3, TO-92-3 (TO-226AA)
Peak Reflow Compatible (260 C)
No
Ic Function
Temperature Sensor IC
Termination Type
Through Hole
Leaded Process Compatible
No
Mounting Type
Through Hole
Operating Temperature Range
-50°C To +150°C
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
FEATURES
200°C temperature span
Accuracy better than ±2% of full scale
Linearity better than ±1% of full scale
Temperature coefficient of 22.5 mV/°C
Output proportional to temperature × V+
Single-supply operation
Reverse voltage protection
Minimal self-heating
High level, low impedance output
APPLICATIONS
HVAC systems
System temperature compensation
Board level temperature sensing
Electronic thermostats
MARKETS
Industrial process control
Instrumentation
Automotive
GENERAL DESCRIPTION
The AD22100 is a monolithic temperature sensor with on-chip
signal conditioning. It can be operated over the temperature
range −50°C to +150°C, making it ideal for use in numerous
HVAC, instrumentation, and automotive applications.
The signal conditioning eliminates the need for any trimming,
buffering, or linearization circuitry, greatly simplifying the
system design and reducing the overall system cost.
The output voltage is proportional to the temperature x the
supply voltage (ratiometric). The output swings from 0.25 V at
−50°C to +4.75 V at +150°C using a single +5.0 V supply.
Due to its ratiometric nature, the AD22100 offers a cost-
effective solution when interfacing to an analog-to-digital
converter. This is accomplished by using the ADC’s +5 V
power supply as a reference to both the ADC and the AD22100
eliminating the need for and cost of a precision reference (see
Figure 2).
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
Voltage Output Temperature Sensor
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
AD22100
FUNCTIONAL BLOCK DIAGRAM
–50C TO +150C
with Signal Conditioning
R
T
V
O
Figure 2. Application Circuit
© 2004 Analog Devices, Inc. All rights reserved.
1k
SIGNAL OUTPUT
DIRECT TO ADC
V+
Figure 1.
+5V
0.1F
REFERENCE
INPUT
AD22100
www.analog.com
ANALOG-TO-
CONVERTER
DIGITAL
V
OUT

Related parts for AD22100AT

AD22100AT Summary of contents

Page 1

... The signal conditioning eliminates the need for any trimming, buffering, or linearization circuitry, greatly simplifying the system design and reducing the overall system cost. The output voltage is proportional to the temperature x the supply voltage (ratiometric). The output swings from 0. −50°C to +4. +150°C using a single +5.0 V supply. ...

Page 2

AD22100 TABLE OF CONTENTS Specifications..................................................................................... 3 Chip Specifications....................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configurations and Function Descriptions ........................... 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ........................................................................ 7 Absolute Accuracy and Nonlinearity Specifications ............... 7 ...

Page 3

... FS (full scale) is defined as the operating temperature range −50°C to +150°C. The listed maximum specification limit applies to the guaranteed temperature range. For example, the AD22100K has a nonlinearity of (0.5%) × (200°C) = 1°C over the guaranteed temperature range of 0°C to +100°C. ...

Page 4

... Supply Voltage Reversed Continuous Supply Voltage Operating Temperature Storage Temperature Output Short Circuit Ground Lead Temperature Range (Soldering 10 sec) Junction Temperature ESD CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges ...

Page 5

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS GND BOTTOM VIEW (Not to Scale) Figure 3. 3-Lead TO-92 Table 4. 3-Lead TO-92 Pin Function Descriptions Pin No. Mnemonic Description 1 V+ Power Supply Input Device ...

Page 6

AD22100 TYPICAL PERFORMANCE CHARACTERISTICS (T0-92 (SOIC 400 FLOW RATE (CFM) Figure 5. Thermal Response vs. Flow Rate 800 1200 Rev Page 250 200 (SOIC) ...

Page 7

... R T Figure 7. Simplified Block Diagram The temperature-dependent resistor, labeled R change in resistance that is nearly linearly proportional to temperature. This resistor is excited with a current source that is proportional to the power supply voltage. The resulting voltage across R is therefore both supply voltage proportional and line- T arly varying with temperature. The remainder of the AD22100 ...

Page 8

... THERMAL ENVIRONMENT EFFECTS The thermal environment in which the AD22100 is used determines two performance traits: the effect of self-heating on accuracy and the response time of the sensor to rapid changes in temperature. In the first case, a rise in the IC junction ) A temperature above the ambient temperature is a function of two ...

Page 9

... Response of the AD22100 output to abrupt changes in ambient temperature can be modeled by a single time constant t expo- nential function. Figure 10 shows the typical response time plots for a few media of interest. 100 ALUMINUM 90 BLOCK MOVING 80 AIR 70 60 STILL AIR TIME (sec) Figure 10. Response Time The time constant t is dependent on θ ...

Page 10

AD22100 OUTLINE DIMENSIONS 0.210 (5.33) 0.170 (4.32) 0.205 (5.21) 0.175 (4.45) 0.135 (3.43) MIN 0.050 (1.27) MAX 0.019 (0.482) 0.055 (1.40) SQ 0.016 (0.407) 0.045 (1.15) 0.105 (2.66) 0.095 (2.42) 0.500 (12.70) MIN SEATING PLANE COMPLIANT TO JEDEC STANDARDS TO-226AA ...

Page 11

... AD22100KR 0°C to +100°C AD22100KR-REEL7 0°C to +100°C 1 AD22100KRZ 0°C to +100°C 1 AD22100KRZ-REEL7 0°C to +100°C AD22100AT –40°C to +85°C AD22100AR –40°C to +85°C AD22100AR-REEL –40°C to +85°C AD22100AR-REEL7 –40°C to +85°C AD22100ST –50°C to +150°C AD22100SR – ...

Page 12

AD22100 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and regis- tered trademarks are the property of their respective owners. C00673–0–7/04(D) Rev Page ...

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