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FM20

Ultra-Low-Power Analog Temperature Sensor

Fairchild Semiconductor 

PRODUCT SPECIFICATION

FM20

Absolute Maximum Ratings1

Parameter

Supply Voltage

Output Voltage

Output Current

Storage Temperature Range

Lead Soldering Temperature

ESD2

Human Body Model

Machine Model

Min.

-60

Typ.

Max.

+7

VDD + 0.5

-20/+1

+150

220

Units

V

V

µA

°C

°C

2000

V

250

V

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 1.5kΩ resistor into each pin. Machine Model: 200pF capacitor

discharged directly into each pin.

Electrical Characteristics3

Limits apply for -55°C ≤ TA ≤ +130°C and VDD = +5.0V unless otherwise noted.

Parameter

Symbol

Conditions

Min

Transfer Characteristic

Sensitivity

Output at 0°C

Accuracy4

Temperature Range

Non-Linearity5

TA = +25°C

-2

TA = -55°C (TMIN)

-3

TA = +130°C (TMAX)

-5

-55

-0.5

Output

Output Voltage Range

VOUT < VDD

300

Output Current Source6

IONSN Sensing

Output Current Sink6

IONSG

IOL

Surge

Output resistance

TA = 25°C

Load regulation

Capacitive Load7

CL

100

Power

Supply Voltage

VDD

2.4

Quiescent Supply Current

Output Floating

IDD

TA = +25°C

-55°C ≤ TA ≤ +130°C

Package

Self Heating

SOT-23

SC70

Typ Max Units

-11.77

1863.9

±1

±2

±2

+2

+3

+5

+130

+0.2

mV/°C

mV

°C

°C

°C

°C

°C

2550 mV

1

µA

mA

20

µA

kΩ

mV/mA

1000 pF

6.0

V

9

11.5 µA

9

14

µA

0.02016 °C

0.02082 °C

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.

REV. 1.0.6 1/9/03

3

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