ASC7531A データシートの表示（PDF） - Unspecified

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ASC7531A

LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR AND VOLTAGE MONITOR

Unspecified 

aSC7531A / aSC7531B

LOW-VOLTAGE 1-WIRE DIGITAL TEMPERATURE SENSOR

AND VOLTAGE MONITOR

PRODUCT SPECIFICATION

Product Description

The aSC7531 is a high-precision CMOS temperature sensor

and voltage monitor with Simple Serial Transport (SST)

compatible serial digital interface, intended for use in PC

hardware monitor applications.

Communication of device capabilities, temperature and voltage

readings take place over the high-speed bi-directional SST

interface.

The SST temperature sensor provides a means for an analog

signal to travel over a digital bus enabling remote temperature

sensing in areas previously not monitored in the PC. The

temperature sensor supports an internal and external thermal

diode. aSC7531A is used with 2N3904 transistor connected as

a remote diode, aSC7531B is used with CPU substrate diode.

The aSC7531 is available in MSOP-10 surface mount

package.

Pin Configuration

VDD

1

10 SST

GND 2

9 ADD0

D+

3

8

aSC7531A/

2.5V

D-

aSC7531B

4

7

VCCP

12V 5

6 5V

Features

• On-chip and remote temperature sensors

• Accuracy:

o +/- 3°C over operational range

o Internal +/- 2°C over 40°C to 70°C

o Remote +/- 1°C over 50°C to 70°C

• Operational Range: -40°C to 125°C

• Temperature resolution: 0.125°C

• Voltage monitoring of 12V, 5V, 3.3V, 2.5V and Vccp

to +/- 2% accuracy, 7.8mV resolution

• 1-wire SST serial interface

• Negotiable SST signaling rate up to 2-Mbps

• Internally corrected for diode non-ideality and series

resistance

• 3-state address pin sets one of 3 SST bus address

0x48 through 0x4A

• 10-lead MSOP package

• MSL-1 per JEDEC J-STD-020C

• Pb-free Matte Sn lead finish & RoHS Compliant

Packages

Applications

Desktop and Notebook Computers

Application Diagram

with aSC7531A

2N3904

3

3.3V

1

with aSC7531B

4

CPU

ADD0 9

SST 10

SST

Interface

aSC7531A/

aSC7531B

2

5 12V

8 2.5V

7 VCCP

6 5V

Ordering Information

Part Number Package Temp. Range and Operating Voltage

aSC7531AM10

10-Lead

MSOP

aSC7531BM10

10-Lead

MSOP

Ayww – Assembly site, year, workweek

-40°C to 125°C, 3.3V

-40°C to 125°C, 3.3V

© Andigilog, Inc. 2006

-1-

www.andigilog.com

Marking

531A

Ayww

531B

Ayww

Supplied In

2500 units Tape &

Reel

2500 units Tape &

Reel

December 2006 - 70A05012

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