AD7814ARM Analog Devices Inc, AD7814ARM Datasheet

AD7814ARM

Manufacturer Part Number

AD7814ARM

Description

IC DGTL TEMP SENSOR 10BIT 8-MSOP

Manufacturer

Analog Devices Inc

Datasheet

1.AD7814ARMZ.pdf (8 pages)

Specifications of AD7814ARM

Mounting Type

Surface Mount

Package / Case

8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Rohs Status

RoHS non-compliant

Function

Temp Monitoring System (Sensor)

Topology

ADC, Register Bank

Sensor Type

Internal

Sensing Temperature

-55°C ~ 125°C

Output Type

MICROWIRE™, QSPI™, SPI™

Output Alarm

Output Fan

Voltage - Supply

2.7 V ~ 5.5 V

Operating Temperature

-55°C ~ 125°C

Peak Reflow Compatible (260 C)

Ic Function

Temperature Sensor IC

Supply Voltage

2.7V

Leaded Process Compatible

Temperature Sensor Function

Temp Sensor

Resolution

10b

Package Type

MSOP

Operating Temperature (min)

-55

Operating Temperature (max)

125C

Operating Temperature Classification

Military

Operating Supply Voltage (min)

2.7V

Operating Supply Voltage (typ)

3.3/5V

Operating Supply Voltage (max)

5.5V

Lead Free Status / Rohs Status

Not Compliant

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

AD7814ARMZ

Manufacturer:

Quantity:

6 218

Company:

Meier Automation Equipment Co., Limited

Part Number:

AD7814ARMZ

Manufacturer:

ADI/亚德诺

Quantity:

20 000

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Associated Companies conveys a license for the purchaser under the Philips I

Patent Rights to use these components in an I

conforms to the I

REV. E

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties that

may result from its use. No license is granted by implication or otherwise

under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

GENERAL DESCRIPTION

The AD7814 is a complete temperature monitoring system in a

SOT-23 package or 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 AD7814 has a flexible serial interface that allows easy inter-

facing to most microcontrollers. The interface is compatible

with SPI

compatible with DSPs. The part features a standby mode that is

controlled via the serial interface.

The AD7814’s wide supply voltage range, low supply current,

and SPI-compatible interface make it ideal for a variety of

applications, including personal computers, office equipment,

and domestic appliances.

FEATURES

10-Bit Temperature-to-Digital Converter

–55 C to +125 C Operating Temperature Range

SPI- and DSP-Compatible Serial Interface

Shutdown Mode

Space-Saving SOT-23 Package

APPLICATIONS

Hard Disk Drives

Personal Computers

Electronic Test Equipment

Office Equipment

Domestic Appliances

Process Control

2 C Accuracy

, QSPI™, and MICROWIRE™ protocol, and is also

C Standard Specification as defined by Philips.

C components of Analog Devices or one of its sublicensed

C system, provided that the system

10-Bit Digital Temperature Sensor

PRODUCT HIGHLIGHTS

1. The AD7814 has an on-chip temperature sensor that allows

2. Supply voltage of 2.7 V to 5.5 V

3. Space-saving 6-lead SOT-23 package and 8-lead MSOP

4. 10-bit temperature reading to 0.25°C resolution

5. Standby mode that reduces the current consumption to 1 µA

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

an accurate measurement of the ambient temperature. The

measurable temperature range is –55°C to +125°C, with a

± 2°C temperature accuracy.

package

GND

FUNCTIONAL BLOCK DIAGRAM

TEMPERATURE

AD7814

BAND GAP

SENSOR

INTERFACE

SERIAL

in 6-Lead SOT-23

BUS

ANALOG/DIGITAL

TEMPERATURE

CONVERTER

VALUE

10-BIT

AD7814

www.analog.com

SCLK

DIN

DOUT

Related parts for AD7814ARM

AD7814ARM Summary of contents

Page 1

FEATURES 10-Bit Temperature-to-Digital Converter – +125 C Operating Temperature Range 2 C Accuracy SPI- and DSP-Compatible Serial Interface Shutdown Mode Space-Saving SOT-23 Package APPLICATIONS Hard Disk Drives Personal Computers Electronic Test Equipment Office Equipment Domestic Appliances Process ...

Page 2

AD7814–SPECIFICATIONS Parameter TEMPERATURE SENSOR AND ADC Accuracy Resolution Update Rate Temperature Conversion Time SUPPLIES Supply Voltage Supply Current Normal Mode Shutdown Mode ( Shutdown Mode ( Power Dissipation Power Dissipation ...

Page 3

... AD7814ARM –55°C to +125°C AD7814ARM-REEL –55°C to +125°C AD7814ARM-REEL7 –55°C to +125°C 2 AD7814ARMZ –55°C to +125°C 2 AD7814ARMZ-REEL –55°C to +125°C 2 AD7814ARMZ-REEL7 –55°C to +125°C 1 Temperature error is over 0°C to 85°C temperature range Pb-free part CAUTION ESD (electrostatic discharge) sensitive device ...

Page 4

AD7814 Pin SOT-23 MSOP Mnemonic Pin No. Pin No. GND 1 7 DIN SCLK DOUT SOT-23 GND 1 AD7814 DIN 2 TOP VIEW (Not ...

Page 5

CIRCUIT INFORMATION The AD7814 is a 10-bit digital temperature sensor. The part houses an on-chip temperature sensor, a 10-bit A/D converter, a reference, and serial interface logic functions in a SOT-23 package. The A/D converter section consists of a conventional ...

Page 6

AD7814 SCLK LEADING DOUT ZERO DON'T DIN CARE Read Operation Figure 2 shows the timing diagram for a serial read from the AD7814. The CS line enables the SCLK input. Ten bits of ...

Page 7

AD7814* SCLK DOUT DIN CS *ADDITIONAL PINS OMITTED FOR CLARITY Figure 4. AD7814 to 8051 Interface AD7814 to PIC16C6x/7x Interface Figure 5 shows an interface circuit between the AD7814 and the PIC16C6x/7x microcontroller. The PIC16C6x/7x synchronous serial port (SSP) is ...

Page 8

AD7814 INDICATOR 0.15 MAX Revision History Location 8/04—Data Sheet Changed from REV REV. E. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . ...

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