Rainbow-electronics MAX1617A Manual de usuario descargar pdf (Pagina 4)

50 5k 500k50k 5M500 50M

TEMPERATURE ERROR vs.

POWER-SUPPLY NOISE FREQUENCY

MAX1617ATOC04

FREQUENCY (Hz)

TEMPERATURE ERROR (°C)

= SQUARE WAVE APPLIED TO

WITH NO 0.1µF V

CAPACITOR

= 250mVp-p

REMOTE DIODE

= 250mVp-p

LOCAL DIODE

= 100mVp-p

REMOTE DIODE

-20

-10

110303 100

TEMPERATURE ERROR

vs. PC BOARD RESISTANCE

MAX1617ATOC01

LEAKAGE RESISTANCE (MΩ)

TEMPERATURE ERROR (°C)

PATH = DXP TO V

(5V)

PATH = DXP TO GND

-2

-1

-50 50 1000 150

TEMPERATURE ERROR

vs. REMOTE-DIODE TEMPERATURE

MAX1617ATOC02

TEMPERATURE (°C)

TEMPERATURE ERROR (°C)

SAMSUNG KST3904

MOTOROLA MMBT3904

ZETEX FMMT3904

RANDOM

SAMPLES

__________________________________________Typical Operating Characteristics

= +25°C, unless otherwise noted.)

MAX1617A

Remote/Local Temperature Sensor

with SMBus Serial Interface

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

= +3.3V, T

= -55°C to +125°C, unless otherwise noted.) (Note 6)

Note 1: Guaranteed but not 100% tested.

Note 2: Quantization error is not included in specifications for temperature accuracy. For example, if the MAX1617A device temper-

ature is exactly +66.7°C, the ADC may report +66°C, +67°C, or +68°C (due to the quantization error plus the +1/2°C offset

used for rounding up) and still be within the guaranteed ±1°C error limits for the +60°C to +100°C temperature range

(Table 2).

Note 3: A remote diode is any diode-connected transistor from Table 1. T

is the junction temperature of the remote diode. See

Remote Diode Selection

for remote diode forward voltage requirements.

Note 4: The SMBus logic block is a static design that works with clock frequencies down to DC. While slow operation is possible, it

violates the 10kHz minimum clock frequency and SMBus specifications, and may monopolize the bus.

Note 5: Note that a transition must internally provide at least a hold time in order to bridge the undefined region (300ns max) of

SMBCLK’s falling edge.

Note 6: Specifications from -55°C to +125°C are guaranteed by design, not production tested.

CONDITIONS UNITSMIN TYP MAXPARAMETER

STBY, SMBCLK, SMBDATA

2.2

Logic Input High Voltage V

2.4

STBY, SMBCLK, SMBDATA; V

= 3V to 5.5V

V0.8Logic Input Low Voltage

ALERT forced to 5.5V

µA1

ALERT Output High Leakage

Current

Logic inputs forced to V

or GND µA-2 2Logic Input Current

= 3V

= 5.5V

ALERT, SMBDATA forced to 0.4V

mA6Logic Output Low Sink Current

SMBus INTERFACE

1 2 3 4 5 6 7 8 9 ... 17 18

MAX1617 A 1
MAX1617A 10

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Rainbow-electronics MAX1617A Manual de usuario Pagina 4

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