LM20 datasheet(4/18 Pages) TI1

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LM20

SNIS106P – DECEMBER 1999 – REVISED FEBRUARY 2013

www.ti.com

Operation Ratings

(1)

Specified Temperature Range:

TMIN ≤ TA ≤ TMAX

LM20B, LM20C with

2.4 V

≤ V+≤ 2.7 V

−30°C ≤ TA ≤ 130°C

LM20B, LM20C with

2.7 V

≤ V+≤ 5.5 V

−55°C ≤ TA ≤ 130°C

LM20S with

2.4 V

≤ V+≤ 5.5 V

−30°C ≤ TA ≤ 125°C

LM20S with

2.7 V

≤ V+≤ 5.5 V

−40°C ≤ TA ≤ 125°C

Supply Voltage Range (V+)

2.4 V to 5.5 V

Thermal Resistance,

θJA

(2)

SC70

415°C/W

DSBGA

340°C/W

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see

the Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics

may degrade when the device is not operated under the listed test conditions.

(2)

The junction to ambient thermal resistance (

θJA) is specified without a heat sink in still air using the printed circuit board layout shown in

PCB Layouts Used For Thermal Measurements.

Electrical Characteristics

Unless otherwise noted, these specifications apply for V

+ = +2.7 V

DC. Boldface limits apply for TA = TJ = TMIN to TMAX ; all

other limits TA = TJ = 25°C; Unless otherwise noted.

LM20B

LM20C

LM20S

TYPICAL

UNIT

PARAMETER

CONDITIONS

Limits

(1)

(Limit)

(2)

TA = 25°C to 30°C

±1.5

±4.0

±2.5

°C (max)

TA = 130°C

±2.5

±5.0

°C (max)

TA = 125°C

±2.5

±5.0

±3.5

°C (max)

Temperature to Voltage Error

TA = 100°C

±2.2

±4.7

±3.2

°C (max)

VO = (−3.88×10

−6×T2)

TA = 85°C

±2.1

±4.6

±3.1

°C (max)

+ (

−1.15×10−2×T) + 1.8639V

TA = 80°C

±2.0

±4.5

±3.0

°C (max)

(3)

TA = 0°C

±1.9

±4.4

±2.9

°C (max)

TA = –30°C

±2.2

±4.7

±3.3

°C (min)

TA = –40°C

±2.3

±4.8

±3.5

°C (max)

TA = –55°C

±2.5

±5.0

°C (max)

Output Voltage at 0°C

1.8639

Variance from Curve

±1.0

°C

Non-Linearity (4)

–20°C

≤ TA ≤ 80°C

±0.4%

Sensor Gain (Temperature

Sensitivity or Average Slope) to

−11.4

−11.0

mV/°C (min)

–30°C

≤ TA ≤ 100°C

−11.77

equation: VO=−11.77

−12.2

−12.6

mV/°C (max)

mV/°C×T+1.860V

μA ≤ IL ≤ 16 μA

160

Ω (max)

Output Impedance

(5) (6)

(1)

Typicals are at TJ = TA = 25°C and represent most likely parametric norm.

(2)

Limits are guaranteed to TI's AOQL (Average Outgoing Quality Level).

(3)

Accuracy is defined as the error between the measured and calculated output voltage at the specified conditions of voltage, current, and

temperature (expressed in°C).

(4)

Non-Linearity is defined as the deviation of the calculated output-voltage-versus-temperature curve from the best-fit straight line, over

the temperature range specified.

(5)

Negative currents are flowing into the LM20. Positive currents are flowing out of the LM20. Using this convention the LM20 can at most

sink

−1 μA and source 16 μA.

(6)

Load regulation or output impedance specifications apply over the supply voltage range of 2.4V to 5.5V.

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