±0.5°C Accurate PWM

Temperature Sensor in 5-Lead SC-70

Data Sheet

TMP05/TMP06

Rev. C

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FEATURES

Modulated serial digital output, proportional to

temperature

±0.5°C typical accuracy at 25°C

±1.0°C accuracy from 0°C to 70°C

Two grades available

Operation from −40°C to +150°C

Operation from 3 V to 5.5 V

Power consumption 70 μW maximum at 3.3 V

CMOS-/TTL-compatible output on TMP05

Flexible open-drain output on TMP06

Small, low cost, 5-lead SC-70 and SOT-23 packages

APPLICATIONS

Isolated sensors

Environmental control systems

Computer thermal monitoring

Thermal protection

Industrial process control

Power-system monitors

FUNCTIONAL BLOCK DIAGRAM

TMP05/TMP06

OUT

CONV/IN

FUNC

GND

1

3

5

4

TEMPERATURE

SENSOR

REFERENCE

CLK AND

TIMING

GENERATION

OUTPUT

CONTROL

AVERAGING

BLOCK/

COUNTER

2

Σ-∆

CORE

Figure 1.

GENERAL DESCRIPTION

The TMP05/TMP06 are monolithic temperature sensors that

generate a modulated serial digital output (PWM), which varies

in direct proportion to the temperature of the devices. The high

high temperature accuracy of ±1°C from 0°C to 70°C with

excellent transducer linearity. The digital output of the TMP05/

TMP06 is CMOS-/TTL-compatible and is easily interfaced to

the serial inputs of most popular microprocessors. The flexible

open-drain output of the TMP06 is capable of sinking 5 mA.

The TMP05/TMP06 are specified for operation at supply voltages

from 3 V to 5.5 V. Operating at 3.3 V, the supply current is typically

370 μA. The TMP05/TMP06 are rated for operation over the –40°C

to +150°C temperature range. It is not recommended to operate

these devices at temperatures above 125°C for more than a total

of 5% (5,000 hours) of the lifetime of the devices. They are

packaged in low cost, low area SC-70 and SOT-23 packages.

The TMP05/TMP06 have three modes of operation: continu-

ously converting mode, daisy-chain mode, and one shot mode.

A three-state FUNC input determines the mode in which the

TMP05/TMP06 operate.

The CONV/IN input pin is used to determine the rate at which

the TMP05/TMP06 measure temperature in continuously

converting mode and one shot mode. In daisy-chain mode, the

CONV/IN pin operates as the input to the daisy chain.

PRODUCT HIGHLIGHTS

1.

The TMP05/TMP06 have an on-chip temperature sensor

that allows an accurate measurement of the ambient

temperature. The measurable temperature range is

–40°C to +150°C.

2.

Supply voltage is 3 V to 5.5 V.

3.

Space-saving 5-lead SOT-23 and SC-70 packages.

4.

Temperature accuracy is typically ±0.5°C. Each part needs

a decoupling capacitor to achieve this accuracy.

5.

Temperature resolution of 0.025°C.

6.

The TMP05/TMP06 feature a one shot mode that reduces

the average power consumption to 102 μW at 1 SPS.