TMP1827 datasheet(6/65 Pages) TI

6 / 65 page

Over free-air temperature range and VDD = 1.7 V to 5.5 V (unless otherwise noted); Typical specifications are at TA = 25°C

and VDD = 3.3 V (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SDQ DIGITAL INPUT/OUTPUT

CIN

SDQ pin capacitance

VIL

Input logic low level(3)

–0.3

0.2 × VS

VIH

Input logic high level(3)

0.8 × VS

VS + 0.3

VHYST

Hysteresis

0.3

VOL

Output low level

IOL = –4 mA

0.4

IO CHARACTERISTICS

CIN

Input capacitance

VIL

Input logic low level(3)

–0.3

0.3 × VS

VIH

Input logic high level(3)

0.7 × VS

VS + 0.3

IIN

Input leakage current

±0.12

µA

VOL

Output low level

IOL = –3 mA

0.4

RESISTOR ADDRESS DECODER CHARACTERISTICS

CLOAD

Load capacitance as seen

on ADDR pin (includes PCB

parasitics)

100

RADDR resistor range

6.49

54.9

kΩ

RADDR resistor tolerance

TA = 25°C

–1.0

1.0

RADDR resistor temperature

coefficient

–100

100 ppm/°C

RADDR resistor lifetime drift

–0.2

0.2

tRESDET

Resistor decoding time

2.8

POWER SUPPLY

IPU

Pullup current(5)

Bus powered mode, serial bus idle

400

μA

IDD_ACTIVE

Supply current during

temperature conversion

Temperature Conversion, serial bus idle

154

μA

IDD_SB

Standby current(4)

VDD powered, serial

bus inactive, continuous

conversion mode

TA = -55°C to 85°C

1.6

4.2

μA

TA = -55°C to 150°C

IDD_SD

Shutdown current

Serial bus inactive, one

shot conversion mode

TA = -55°C to 85°C

1.3

3.3

μA

TA = -55°C to 150°C

23.2

VPOR

Power-on reset threshold

voltage

Supply rising (Figure 8-4, Figure 8-5)

1.5

Brownout detect

Supply falling

1.3

tINIT

POR Initialization Time

Time required by device to reset after power up

(Figure 8-4, Figure 8-5)

2.0

(1)

Repeatability is the ability to reproduce a reading when the measured temperature is applied consecutively, under the same conditions.

See Figure 8-11

(2)

Long term stability is determined using accelerated operational life testing at a junction temperature of 150°C.

(3)

In bus powered mode VS = VPUR. In supply powered mode VS = VDD.

(4)

Quiescent current between conversions.

(5)

The pullup current parameter is required to size the bus pullup resistor (See Section 9.3.3) for active temperature conversion or

EEPROM read and program or authentication operations.

8.6 1-Wire Interface Timing

Over free-air temperature range and VDD = 1.70 V to 5.5 V (unless otherwise noted)

STANDARD MODE

OVERDRIVE MODE

UNIT

MIN

MAX

MIN

MAX

BUS RESET AND BIT SLOT TIMING

TMP1827

SBOSA15A – SEPTEMBER 2022 – REVISED MAY 2023

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