© 2005 Microchip Technology Inc.

DS21498C-page 1

TC1047/TC1047A

Features

• Supply Voltage Range:

- TC1047: 2.7V to 4.4V

- TC1047A: 2.5V to 5.5V

• Wide Temperature Measurement Range:

• High Temperature Converter Accuracy:

• Linear Temperature Slope: 10 mV/°C (typ.)

• Available in 3-Pin SOT-23B Package

• Very Low Supply Current:

-35 µA Typical

Applications

• Cellular Phones

• Power Supply Thermal Shutdown

• Temperature-Controlled Fans

• Temperature Measurement/Instrumentation

• Temperature Regulators

• Consumer Electronics

• Portable Battery-Powered Equipment

Block Diagram

General Description

The TC1047 and TC1047A are linear voltage output

temperature sensors whose output voltage is directly

proportional

to

the

measured

temperature.

The

TC1047 and TC1047A can accurately measure

temperature from -40°C to +125°C. With the TC1047,

the supply voltage can vary between 2.7V and 4.4V.

The power supply range of the TC1047A is from 2.5V

to 5.5V.

The output voltage range for these devices is typically

100 mV at -40°C, 500 mV at 0°C, 750 mV at +25°C and

1.75V at +125°C. A 10 mV/°C voltage slope output

response

allows

for

a

predictable

temperature

measurement over a wide temperature range. The

TC1047 and TC1047A are packaged in 3-pin SOT-23B

packages,

making

them

ideal

for

space-critical

applications.

Package Type

TC1047A

A/D

Microcontroller

Converter

Note: 3-Pin SOT-23B is equivalent to JEDEC TO-236

TC1047/1047A

1

2

3

Precision Temperature-to-Voltage Converter