AMC80 Datasheet, PDF (1/23 Pages) Texas Instruments – System Hardware Monitor with Two-Wire/SMBus Serial Interface

AMC80
www.ti.com
SBOS559 – MAY 2011
System Hardware Monitor with Two-Wire/SMBus Serial Interface
Check for Samples: AMC80
FEATURES
1
•2 10-bit ADC with Seven Analog Inputs
• Fan-Speed Monitoring Inputs
• Input Range/Resolution:
– Default: 2.56 V/2.5 mV
– Programmable: V_DD/6 mV
• Chassis Intrusion Detection Input
• Interrupt Alarms:
– Upper Over-Limit
– Lower Under-Limit
• Interrupt Status Register Input for External
Temperature Sensors
• Shutdown Mode
• Programmable RST_OUT/OS
• Pin Compatible with LM96080 and LM80
• Package: 24-Pin TSSOP
APPLICATIONS
• Communications Equipment
• Servers
• Industrial and Medical Equipment
• Storage Area Networks
• Set-Top Boxes
• Test and Measurement Equipment
DESCRIPTION
The AMC80 is a system hardware monitoring and
control circuit that includes a seven-channel, 10-bit
analog-to-digital converter (ADC), two programmable
fan-speed monitors, and a two-wire interface. The
AMC80 also includes programmable upper over-limit
and lower under-limit alarms that activate when the
programmed limits are exceeded.
The AMC80 can interface with both linear and digital
temperature sensors. The 2.5-mV least significant bit
(LSB) and 2.56-V input range can accept inputs from
a linear sensor such as the TMP20. The BTI pin is
used as an input from a digital sensor such as the
TMP75. The AMC80 operates from a 3-V to 5.5-V
supply voltage, has low supply current, and can be
configured using a two-wire interface, thus making it
ideal for a wide range of applications.
The AMC80 is available in a 24-lead TSSOP package
and is fully specified over the –40°C to +125°C
temperature range.
Positive
Voltage
Negative
Voltage
TMP75
Temperature
Sensor
Chassis
Intrusion
Detector
Analog
Inputs
V+
CH0
CH1
CH2
CH3
CH4
CH5
CH6
Temperature
Sensor
FAN1
FAN2
BTI
GPI(CI)
INT_IN
Serial
Bus
Interface
SDA
SCL
A0/NTEST_OUT
A1
A2
AMC80
10-Bit
Delta-Sigma
ADC
Limit
Registers
and
Alarm
Comparators
Fan Speed
Counter
Interface and Control
Interrupt
Masking
and
Interrupt
Control
INT
RST_OUT/OS
Interrupt
Outputs
GPO
NTEST_IN/RESET_IN
Digital
Inputs
and
Outputs
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated