ADT7408 datasheet(6/23 Pages) AD

Part #	ADT7408

Description	12-Bit Digital Temperature Sensor

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Data Sheet

ADT7408

Rev. A | Page 5 of 22

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter

Rating

VDD to VSS

−0.3 V to +7 V

SDA Input Voltage to VSS

−0.3 V to VDD + 0.3 V

SDA Output Voltage to VSS

−0.3 V to VDD + 0.3 V

SCL Input Voltage to VSS

−0.3 V to VDD + 0.3 V

EVENT# Output Voltage to VSS

−0.3 V to VDD + 0.3 V

Operating Temperature Range

−55°C to +150°C

Storage Temperature Range

−65°C to +160°C

Maximum Junction Temperature, TJMAX

150°C

Thermal Resistance1

θJA, Junction-to-Ambient (Still Air)

85°C/W

IR Reflow Soldering Profile

Refer to Figure 3

1 Power Dissipation PMAX = (TJMAX − TA)/θJA, where TA is the ambient

temperature. Thermal resistance value relates to the package being used on

a standard 2-layer PCB, which gives a worst-case θJA. Some documents may

publish junction to case, thermal resistance θJC, but it refers to a component

that is mounted on an ideal heat sink. As a result, junction to ambient,

thermal resistance is more practical for air cooled, PCB mounted

components.

Stresses at or above those listed under Absolute Maximum

Ratings may cause permanent damage to the product. This is a

stress rating only; functional operation of the product at these

or any other conditions above those indicated in the operational

section of this specification is not implied. Operation beyond

the maximum operating conditions for extended periods may

affect product reliability.

480 SECONDS MAX.

60 – 180 SECONDS

20 – 40 SECONDS

TIME (Seconds)

260 – 5/+0°C

150°C – 200°C

RAMP DOWN

6°C/SECOND

MAX.

217°C

RAMP UP

3°C/SECOND MAX

60 – 150 SECONDS

Figure 3. LFCSP Pb-Free Reflow Profile Based on JEDEC J-STD-20C

ESD CAUTION

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