GND

Thermal Diodes

6

TMP235, TMP236

SBOS857 – SEPTEMBER 2017

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7 Detailed Description

7.1 Overview

The TMP23x devices are a family of linear analog temperature sensors with a output voltage proportional to

temperature. These temperature sensors have an accuracy from 0°C to 70°C of ±1°C (TMP23x) and ±2°C

(TMP23x). The TMP235 device provides a positive slope output of 10 mV/°C over the full –40°C to +150°C

temperature range and a 2.3 V to 5.5 V supply range. The higher gain TMP236 sensor provides a positive slope

output of 19.5 mV/°C from –10°C to +125°C and a 3.1 V to 5.5 V supply range. A class-AB output driver provides

a maximum output of 100 µA to drive capacitive loads up to 1000 pF.

7.2 Functional Block Diagram

7.3 Feature Description

7.3.1 TMP23x Transfer Function

Table 1 lists the output voltages of the TMP23x devices across the full operating temperature range. The first-

order columns of this table are the straight line references that determine the accuracy specifications of the

TMP23x devices (see Electrical Characteristics). The second-order columns show the small amount of typical

nonlinearity in the output.

Table 1. TMP23X Transfer Table

TEMP

(°C)

TMP235

TMP236

First-Order

Second-Order

First-Order

Second-Order

–40

100

TBD

–

–

–35

150

TBD

–

–

–30

200

TBD

–

–

–25

250

TBD

–

–

–20

300

TBD

–

–

–15

350

TBD

–

–

–10

400

TBD

205

TBD

–5

450

TBD

303

TBD

0

500

TBD

400

TBD

5

550

TBD

498

TBD

10

600

TBD

595

TBD

15

650

TBD

693

TBD

20

700

TBD

790

TBD

25

750

TBD

888

TBD

30

800

TBD

985

TBD

35

850

TBD

1083

TBD