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

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

AMC80

SBOS559B – MAY 2011 – REVISED OCTOBER 2015

AMC80 System Hardware Monitor with Two-Wire and SMBus Serial Interface

1 Features

3 Description

The AMC80 is a system hardware monitoring and

1

•

10-Bit ADC With Seven Analog Inputs

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

•

Fan-Speed Monitoring Inputs

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

•

Input Range/Resolution:

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

AMC80 also includes programmable upper over-limit

–

Default: 2.56 V/2.5 mV

and lower under-limit alarms that activate when the

–

Programmable: VDD/6 mV

programmed limits are exceeded.

•

Chassis Intrusion Detection Input

The AMC80 can interface with both linear and digital

•

Interrupt Alarms:

temperature sensors. The 2.5-mV least significant bit

–

Upper Over-Limit

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

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

–

Lower Under-Limit

used as an input from a digital sensor such as the

•

Interrupt Status Register Input for External

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

Temperature Sensors

supply voltage, has low supply current, and can be

•

Shutdown Mode

configured using a two-wire interface, thus making it

ideal for a wide range of applications.

•

Programmable RST_OUT/OS

•

Pin Compatible with LM96080 and LM80

The AMC80 is available in a 24-lead TSSOP package

and is fully specified over the –40°C to +125°C

•

Package: 24-Pin TSSOP

temperature range.

2 Applications

Device Information(1)

•

Communications Equipment

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Servers

AMC80

TSSOP (24)

7.80 mm × 4.40 mm

•

Industrial and Medical Equipment

(1) For all available packages, see the package option addendum

at the end of the data sheet.

•

Storage Area Networks

•

Set-Top Boxes

•

Test and Measurement Equipment

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.