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AD7314

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REV. A

Low Voltage, 10-Bit Digital Temperature

Sensor in 8-Lead MSOP

FUNCTIONAL BLOCK DIAGRAM

AD7314

BAND GAP

TEMPERATURE

SENSOR

SERIAL

BUS

INTERFACE

GND

ID

CE

SCLK

SDI

SDO

10-BIT

ANALOG-TO-DIGITAL

CONVERTER

TEMPERATURE

VALUE

REGISTER

FEATURES

10-Bit Temperature-to-Digital Converter

–35 C to +85 C Operating Temperature Range

2 C Accuracy

Shutdown Mode

Space-Saving MSOP Package

APPLICATIONS

Hard Disk Drives

Personal Computers

Electronic Test Equipment

Office Equipment

Domestic Appliances

Process Control

Mobile Phones

GENERAL DESCRIPTION

The AD7314 is a complete temperature monitoring system in

an 8-lead MSOP package. It contains a band gap temperature

sensor and 10-bit ADC to monitor and digitize the temperature

reading to a resolution of 0.25

∞C.

The AD7314 has a flexible serial interface that allows easy

interfacing to most microcontrollers. The interface is compat-

ible with SPI, QSPI™, and MICROWIRE™ protocols and is

also compatible with DSPs. The part features a standby mode

that is controlled via the serial interface.

The AD7314’s low supply current and SPI compatible interface

make it ideal for a variety of applications, including personal

computers, office equipment, and domestic appliances.

PRODUCT HIGHLIGHTS

1. The AD7314 has an on-chip temperature sensor that allows

an accurate measurement of the ambient temperature. The

measurable temperature range is –35

∞C to +85∞C, with a

±2∞C temperature accuracy.

2. Supply voltage of 2.65 V to 5.5 V.

3. Space-saving 8-lead MSOP package.

4. 10-bit temperature reading to 0.25

∞C resolution.

5. The AD7314 features a standby mode that reduces the

current consumption to 1

mA max.