UCD3138RMHT datasheet(18/78 Pages) TI1

18 / 78 page

UCD3138

SLUSAP2F – MARCH 2012 – REVISED NOVEMBER 2013

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ELECTRICAL CHARACTERISTICS (continued)

V33A = V33D = V33DIO = 3.3V; 1

μF from BP18 to DGND, TJ = –40°C to 125°C (unless otherwise noted)

PARAMETER

TEST CONDITION

MIN

TYP

MAX

UNIT

Internal signal warning of brownout

Brownout

2.9

conditions

TEMPERATURE SENSOR(7)

VTEMP

Voltage range of sensor

1.46

2.44

Voltage resolution

Volts/°C

5.9

mV/ºC

Temperature resolution

Degree C per bit

0.1034

ºC/LSB

Accuracy(7)(8)

-40°C to 125°C

–10

±5

ºC

Temperature range

-40°C to 125°C

–40

125

ºC

ITEMP

Current draw of sensor when active

μA

TON

Turn on time / settling time of sensor

100

μs

VAMB

Ambient temperature

Trimmed 25°C reading

1.85

ANALOG COMPARATOR

DAC

Reference DAC Range

2.5

Reference Voltage

2.478

2.5

2.513

Bits

bits

INL(7)

–0.42

0.21

LSB

DNL(7)

0.06

0.12

LSB

Offset

–5.5

19.5

Time to disable DPWM output based on 0

V to 2.5 V step input on the analog

150

comparator.(9)

Reference DAC buffered output load(10)

0.5

Buffer offset (-0.5 mA)

4.6

8.3

Buffer offset (1.0 mA)

–0.05

(7)

Characterized by design and not production tested.

(8)

Ambient temperature offset value should be used from the TEMPSENCTRL register to meet accuracy.

(9)

As designed and characterized. Not 100% tested in production.

(10) Available from reference DACs for comparators D, E, F and G.

Electrical Specifications

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