SA56004HD,118【PDF 1/43 页】IC TEMP SENSOR DIGITAL 8SOIC

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1. General description

The NXP Semiconductors SA56004X is an SMBus compatible, 11-bit remote/local digital

temperature sensor with overtemperature alarms. The remote channel of the SA56004X

monitors a diode junction, such as a substrate PNP of a microprocessor or a diode

connected transistor such as the 2N3904 (NPN) or 2N3906 (PNP). With factory trimming,

remote sensor accuracy of ? 癈 is achieved.

Undertemperature and overtemperature alert thresholds can be programmed to cause the

ALERT

output to indicate when the on-chip or remote temperature is out of range. This

output may be used as a system interrupt or SMBus alert. The T_CRIT

output is activated

when the on-chip or remote temperature measurement rises above the programmed

T_CRIT threshold register value. This output may be used to activate a cooling fan, send

a warning or trigger a system shutdown. To enhance system reliability further, the

SA56004X employs an SMBus time-out protocol. The SA56004X has a unique device

architecture.

The SA56004X is available in the SO8, TSSOP8 and HVSON8 packages. SA56004X has

8 factory-programmed device address options. The SA56004X is pin-compatible with the

LM86, MAX6657/8, and ADM1032.

2. Features and benefits

n Accurately senses temperature of remote microprocessor thermal diodes or diode

connected transistors within ? 癈

n On-chip local temperature sensing within ?/SPAN>2 ?/SPAN>C

n Temperature range of -40 ?/SPAN>C to +125 ?/SPAN>C

n 11-bit, 0.125 ?/SPAN>C resolution

n 8 different device addresses are available for server applications. The SA56004ED

with marking code 56004E, and SA56004EDP with marking code 6004E are address

compatible with the National LM86, the MAX6657/8 and the ADM1032.

n Offset registers available for adjusting the remote temperature accuracy

n Programmable under/overtemperature alarms: ALERT

and T_CRIT

n SMBus 2.0 compatible interface, supports TIMEOUT

n Operating voltage range: 3.0 V to 3.6 V

n I

C-bus Standard-mode and Fast-mode compatible

n SO8, TSSOP8 and HVSON8 packages

n Programmable conversion rate (0.0625 Hz to 26 Hz)

n Undervoltage lockout prevents erroneous temperature readings

n Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

SA56004X

SMBus-compatible, 8-pin, remote/local digital temperature

sensor with overtemperature alarms

Rev. 7 25 February 2013

Product data sheet

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