MAX1617A View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX1617A

Remote/Local Temperature Sensor with SMBus Serial Interface

Maxim Integrated 

MAX1617A

Remote/Local Temperature Sensor

with SMBus Serial Interface

Electrical Characteristics (continued)

(VCC = +3.3V, TA = -55°C to +125°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

SMBus INTERFACE

Logic Input High Voltage

Logic Input Low Voltage

Logic Output Low Sink Current

STBY, SMBCLK, SMBDATA

VCC = 3V

VCC = 5.5V

STBY, SMBCLK, SMBDATA; VCC = 3V to 5.5V

ALERT, SMBDATA forced to 0.4V

MIN TYP MAX UNITS

2.2

V

2.4

0.8

V

6

mA

ALERT Output High Leakage

Current

Logic Input Current

ALERT forced to 5.5V

Logic inputs forced to VCC or GND

1

µA

-2

2

µA

Note 1: All devices 100% production tested at TA = +85°C. Limits over temperature are guaranteed by design.

Note 2: Guaranteed but not 100% tested.

Note 3: Quantization error is not included in specifications for temperature accuracy. For example, if the MAX1617A device tempera-

ture 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 4: A remote diode is any diode-connected transistor from Table 1. TR is the junction temperature of the remote diode. See

Remote-Diode Selection for remote diode forward voltage requirements.

Note 5: 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 6: 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.

Typical Operating Characteristics

(TA = +25°C, unless otherwise noted.)

TEMPERATURE ERROR

vs. PC BOARD RESISTANCE

20

10

PATH = DXP TO GND

0

-10

-20

1

PATH = DXP TO VCC (5V)

3

10

30

100

LEAKAGE RESISTANCE (MΩ)

TEMPERATURE ERROR

vs. REMOTE-DIODE TEMPERATURE

2

1

ZETEX FMMT3904

0

MOTOROLA MMBT3904

SAMSUNG KST3904

-1

RANDOM

SAMPLES

-2

-50

0

50

100

150

TEMPERATURE (°C)

TEMPERATURE ERROR vs.

POWER-SUPPLY NOISE FREQUENCY

12

VIN = SQUARE WAVE APPLIED TO

VCC WITH NO 0.1µF VCC CAPACITOR

9

VIN = 250mVp-p

REMOTE DIODE

6

VIN = 250mVp-p

LOCAL DIODE

3

VIN = 100mVp-p

REMOTE DIODE

0

50 500 5k 50k 500k 5M 50M

FREQUENCY (Hz)

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