Temperature

Sensor

Limit

Registers

and

Alarm

Comparators

Interrupt

Masking

and

Interrupt

Control

InterfaceandControl

AMC80

CH0

CH6

Analog

Inputs

TMP75

Temperature

Sensor

Chassis

Intrusion

Detector

GPI(CI)

INT_IN

BTI

A0/NTEST_OUT

SDA

SCL

A1

A2

CH1

CH2

CH3

CH4

CH5

GPO

INT

RST_OUTOS

/

Interrupt

Outputs

Serial

Bus

Interface

10-Bit

Delta-Sigma

ADC

V+

Positive

Voltage

Negative

Voltage

FanSpeed

Counter

FAN1

FAN2

NTEST_INRESET_IN

/

Digital

Inputs

and

Outputs

AMC80

www.ti.com

SBOS559

– MAY 2011

System Hardware Monitor with Two-Wire/SMBus Serial Interface

Check for Samples: AMC80

1

FEATURES

2

•

10-bit ADC with Seven Analog Inputs

•

Storage Area Networks

•

Fan-Speed Monitoring Inputs

•

Set-Top Boxes

•

Input Range/Resolution:

•

Test and Measurement Equipment

– Default: 2.56 V/2.5 mV

DESCRIPTION

The AMC80 is a system hardware monitoring and

•

Chassis Intrusion Detection Input

control circuit that includes a seven-channel, 10-bit

•

Interrupt Alarms:

analog-to-digital converter (ADC), two programmable

fan-speed monitors, and a two-wire interface. The

– Upper Over-Limit

AMC80 also includes programmable upper over-limit

– Lower Under-Limit

and lower under-limit alarms that activate when the

•

Interrupt Status Register Input for External

programmed limits are exceeded.

Temperature Sensors

The AMC80 can interface with both linear and digital

•

Shutdown Mode

temperature sensors. The 2.5-mV least significant bit

•

Programmable RST_OUT/OS

(LSB) and 2.56-V input range can accept inputs from

a linear sensor such as the TMP20. The BTI pin is

•

Pin Compatible with LM96080 and LM80

used as an input from a digital sensor such as the

•

Package: 24-Pin TSSOP

TMP75. The AMC80 operates from a 3-V to 5.5-V

supply voltage, has low supply current, and can be

APPLICATIONS

configured using a two-wire interface, thus making it

ideal for a wide range of applications.

•

Communications Equipment

•

Servers

The AMC80 is available in a 24-lead TSSOP package

and is fully specified over the

–40°C to +125°C

•

Industrial and Medical Equipment

temperature range.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.