LPC1547JBD48 datasheet(81/99 Pages) NXP

81 / 99 page

LPC15XX

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Product data sheet

Rev. 1 — 19 February 2014

81 of 99

NXP Semiconductors

LPC15xx

32-bit ARM Cortex-M3 microcontroller

[1]

Absolute temperature accuracy.

[2]

Typical values are derived from nominal simulation (VDDA = 3.3 V; Tamb = 27 C; nominal process models).

Maximum values are derived from worst case simulation (VDDA = 2.6 V; Tamb = 105 C; slow process

models).

[3]

Internal voltage reference must be powered before the temperature sensor can be turned on.

[4]

Settling time applies to switching between comparator and ADC channels.

[1]

Measured over matrix samples.

[2]

Measured for samples over process corners.

Table 27.

Temperature sensor static and dynamic characteristics

VDDA = 2.4 V to 3.6 V

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

DTsen

sensor

temperature

accuracy

Tamb = 40 C to +105 C

[1] --

C

linearity error

Tamb = 40 C to +105 C-

C

ts(pu)

power-up

settling time

to 99% of temperature

sensor output value

[2][3] -81

110

s

Table 28.

Temperature sensor Linear-Least-Square (LLS) fit parameters

VDDA = 2.4 V to 3.6 V

Fit parameter

Range

Min

Typ

Max

Unit

LLS slope

Tamb = 40 C to +105 C

[1] -

-2.29

mV/

C

LLS intercept at 0

CT

amb = 40 C to +105 C

[1] -

577.3

Value at 30

C

[2] 502

514

VDDA = 3.3 V; measured on matrix samples.

Fig 43. LLS fit of the temperature sensor output voltage

aaa-011334

-40

-10

110

200

400

600

800

temperature (°C)

(mV)

Measured temperature sensor output

measured temperature sensor output

LLS fit

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