TMP20 datasheet(3/18 Pages) TI1

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TMP20

www.ti.com

SBOS466 – DECEMBER 2009

ELECTRICAL CHARACTERISTICS

At TA = +25°C and V+ = 2.7V to 5.5V, unless otherwise noted.

TMP20

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

TEMPERATURE MEASUREMENT(1)

Accuracy(2)

TA = –55°C to +130°C

–2.5

+2.5

°C

vs Supply

V+ = 1.8V to +5.5V, at TA = +15°C to +130°C

–.0.05

+0.05

°C/V

V+ = 2.7V to +5.5V, at TA = –50°C to +130°C

–.0.05

+0.05

°C/V

Temperature Sensitivity(3)

TA = –30°C to +100°C

–11.4

—11.77

–12.2

mV/°C

Output Voltage(4)

TA = 0°C

1863.9

TA = +25°C

1574

Nonlinearity(5)

–20°C

≤ TA ≤ +80°C

±0.4

ANALOG OUTPUT

Output Resistance

–600

μA ≤ ILOAD ≤ 600μA

Ω

Load Regulation

–600

μA ≤ ILOAD ≤ 600μA

Maximum Capacitive Load

POWER SUPPLY

Specified Voltage Range

TA = –55°C to +130°C

2.7

5.5

TA = +15°C to +130°C

(6)

1.8

5.5

Quiescent Current

V+ = 5.5V, TA = +25°C

2.6

μA

over Temperature

V+ = 5.5V, T = –55°C to +130°C

μA

Shutdown Current

ISD

V+ < 0.5V

TEMPERATURE RANGE

Specified Operating Range

V+ = 2.7V to 5.5V

–55

+130

°C

V+ = 1.8V to 5.5V(6)

+15

+130

°C

Operating Range

V+ = 2.7V to 5.5V

–55

+150

°C

Thermal Resistance

θJA

SC70

185

°C/W

SOT563

238

°C/W

Self-Heating

SC70

0.01

°C

SOT563

0.01

°C

(1)

100% production tested at TA = +25°C. Specifications over temperature range are assured by design.

(2)

Power-supply rejection is encompassed in the accuracy specification.

(3)

Temperature sensitivity is the average slope to the equation VO = (–11.77 × T) + 1.860V.

(4)

VOUT is calculated from temperature with the following equation:

VO = (–3.88 × 10

–6 × T2) + (–1.15 × 10–2 × T) + 1.8639V,

where T is in °C.

(5)

Nonlinearity is the deviation of the calculated output voltage from the best fit straight line.

(6)

The TMP20 transfer function requires the output voltage to rise above the 1.8V supply as the temperature decreases below +15°C.

When operating at a 1.8V supply, it is normal for the TMP20 output to approach 1.8V and remain at that voltage as the temperature

continues to decrease below +15°C. This condition does not damage the device. Once the temperature rises above +15°C, the output

voltage resumes changing as the temperature changes, according to the transfer function specified in this document. For more

information about the transfer function, see the Transfer Function section.

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