FM20 FAIRCHILD | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

Features

  • Analog Output, -11.77mV/°C
  • Range, -55 to 130°C
  • Accuracy, ±1°C at 25°C
  • Supply Current, 9µA typical
  • Output Drive, 1µA
  • Self-heating < 0.021°C
  • Operating V oltage: +2.4V to +6V

Applications

  • Mobile Phones
  • Computers
  • Battery Management
  • Office Equipment
  • H V A C
  • Power Supply Modules
  • Disk Drives
  • Automotive

Description

As a precision CMOS temperature sensor, the FM20 is cost-effective for accurate low-power temperature monitoring applications. Output voltage versus temperature is extremely linear. With no load, the supply current is typically 1µA. For normal operation, the load on V OUT should be 5M Ω or less. In a typical application, a remotely mounted FM20 is monitored by a microcontroller with an analog A/D converter input. Alternatively, the FM20 can drive a comparator with a high impedance input. Accuracy is typically ±1°C at room temperature; and better than ±2.5°C from 0 to 50°C. Available packages are surface mount 5-pin SC70 and 3-pin SOT-23. Thermal Response FM20 Output Voltage vs. Temperature 25 50 75 100 125-25-50 -40 0 1863.9 391 VOUT (mV) Temperature (˚C) Temperature (˚C) = VOUT – 1863.9mV –11.77mV/˚C FM20 Ultra-Low-Power Analog Temperature Sensor

FM20 PRODUCT SPECIFICATION REV. 1.0.6 1/9/03 Pin Assignments Pin Descriptions Pin Name Pin No. Type FunctionSC-70 SOT-23 V OUT 3 2 Analog Output Temperature Sense. Analog output voltage indicating temperature. V OUT V DD

41 P o w e r

Supply Voltage. 2.4 to 6.0V GND 2, 5 3 Power Ground. FM20 VOUT 321 N/C VDD GND GND FM20 VOUTVDD GND

PRODUCT SPECIFICATION FM20 REV. 1.0.6 1/9/03 Absolute Maximum Ratings Notes: 1. Absolute maximum ratings are limits beyond which operation may cause permanent damage to the device. These are stress ratings only; functional operation at or above these limits is not implied. 2. Human Body Model: 100pF capacitor discharged through a 1.5k Ω resistor into each pin. Machine Model: 200pF capacitor discharged directly into each pin.

Electrical Characteristics

Limits apply for -55°C T A +130°C and V DD = +5.0V unless otherwise noted. Notes: 3. These specifications are guaranteed only for the test conditions listed. 4. Accuracy (expressed in °C) = Difference between calculated output voltage and measured output voltage. Calculated output voltage = -11.77mV/°C multiplied by device’s case temperature at specified conditions of temperature, voltage and power supply plus an offset of 1863.9 mV at 0°C. 5. Non-linearity is defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straight line, over the device's rated temperature range. 6. Lowest output current should be targeted; higher currents result in more self-heating of the device. 7. High capacitive loads may be driven by the output in a static mode, but it may require a delay time before initial read at power up to allow for the RC time constant of the charging capacitor. Parameter Min. Typ. Max. Units Supply Voltage +7 V Output Voltage V DD + 0.5 V Output Current -20/+1 µA Storage Temperature Range -60 +150 °C Lead Soldering Temperature 220 °C ESD Human Body Model Machine Model 2000 250 V V Parameter Symbol Conditions Min Typ Max Units Transfer Characteristic Sensitivity -11.77 mV/°C Output at 0°C 1863.9 mV Accuracy T A = +25°C T A = -55°C (T MIN T A = +130°C (T MAX Temperature Range -55 +130 °C Non-Linearity -0.5 +0.2 °C Output Output Voltage Range V OUT < V DD 300 2550 mV Output Current Source I ONSN Sensing 1 µA I ONSG Surge mA Output Current Sink I OL 20 µA Output resistance T A = 25°C k Ω Load regulation mV/mA Capacitive Load C L 100 1000 pF Power Supply Voltage V DD 2.4 6.0 V Quiescent Supply Current Output Floating I DD T A = +25°C -55°C T A +130°C 11.5 µA µA Package Self Heating SOT-23 SC70 0.02016 0.02082

stant of the FM20, while filtering the higher frequency noise. Figure 3. FM20 with Filter Network for Noisy Environments or for Capacitive Loads Greater than 300pF Table 1. Resistor/Capacitor Combinations for Filter Network

FM20 PRODUCT SPECIFICATION REV. 1.0.6 1/9/03 Mechanical Dimensions inches (millimeters) unless otherwise noted SC70 5-pin FS Package Code MAA05A PIN 1 0.0005 (0.013) 0.004 (0.100) 0.015 (0.370) 0.020 (0.510) 0.083 (2.100) 0.104 (2.640) 0.047 (1.20) 0.055 (1.40) 0.035 (0.890) 0.041 (1.030) SEATING PLANE 10° 0°0.015 (0.085) 0.007 (0.180) 0.0217 REF (0.55) REF 0.035 (0.890) 0.044 (1.120) 0.110 (2.800) 0.120 (3.040) 0.070 (1.780) 0.081 (2.050) 0.017 (0.450) 0.024 (0.600) 2.00±0.20 1.25±0.10 0.25 1.9 0.65 .5 min 0.4 min LAND PATTERN RECOMMENDATION SEE DETAIL A 0.10 0.00 0.25 0.10 0.45 0.10 0.20 0.9±.10 6.00° 6.00° R0.14 R0.10 0.20 GAGE PLANE

0.425 NOMINAL

NOTES: A. CONFORMS TO EIAJ REGISTERED OUTLINE DRAWING SC88A. B. DIMENSIONS DO NOT INCLUDE BURRS OR MOLD FLASH. C. DIMENSIONS ARE IN MILLIMETERS. 0°-30° 0.95±.15 max 0.1 max 0.1 M +0.10 -0.05 2.10±0.10 0.65 321 -A- -B-

FM20 PRODUCT SPECIFICATION 1/9/03 0.0m 003 Stock#DS30000020

2002 Fairchild Semiconductor Corporation

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

Ordering Information

Part Number Package Temperature Range Shipping FM20P5X 5-Pin SC70 -55°C to +130°C Tape and Reel, 3000 units/reel FM20S3X 3-Pin SOT -23 -55°C to +130°C Tape and Reel, 3000 units/reel