TMP04 AD [Analog Devices], TMP04 Datasheet

TMP04

Manufacturer Part Number

TMP04

Description

Serial Digital Output Thermometers

Manufacturer

AD [Analog Devices]

Datasheets

1.TMP03FRUZ-REEL7.pdf (16 pages)

2.TMP04.pdf (16 pages)

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Current page: 1 of 16
Download datasheet (242Kb)

GENERAL DESCRIPTION

The TMP03/TMP04 are monolithic temperature detectors that

generate a modulated serial digital output that varies in direct

proportion to the temperature of the device. An onboard sensor

generates a voltage precisely proportional to absolute tempera-

ture which is compared to an internal voltage reference and

input to a precision digital modulator. The ratiometric encoding

format of the serial digital output is independent of the clock drift

errors common to most serial modulation techniques such as

voltage-to-frequency converters. Overall accuracy is ± 1.5°C

(typical) from –25°C to +100°C, with excellent transducer lin-

earity. The digital output of the TMP04 is CMOS/TTL

compatible, and is easily interfaced to the serial inputs of most

popular microprocessors. The open-collector output of the

TMP03 is capable of sinking 5 mA. The TMP03 is best suited

for systems requiring isolated circuits utilizing optocouplers or

isolation transformers.

The TMP03 and TMP04 are specified for operation at supply

voltages from 4.5 V to 7 V. Operating from 5 V, supply current

(unloaded) is less than 1.3 mA.

The TMP03/TMP04 are rated for operation over the –40°C to

+100°C temperature range in the low cost TO-92, SO-8, and

TSSOP-8 surface mount packages. Operation extends to 150°C

with reduced accuracy.

Patent pending.

(continued on page 4)

Serial Digital Output Thermometers

FUNCTIONAL BLOCK DIAGRAM

PACKAGE TYPES AVAILABLE

TMP03/TMP04

SO-8 and RU-8 (TSSOP)

GND

OUT

V+

OUT

TEMPERATURE

MODULATOR

OUT

NC = NO CONNECT

SENSOR

TMP03/TMP04

DIGITAL

BOTTOM VIEW

TMP03/TMP04

(Not to Scale)

TO-92

TOP VIEW

VPTAT

TMP03/

TMP04

V+

GND

REF

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