AD590JF Analog Devices Inc, AD590JF Datasheet - Page 9

• Manufacturer Part Number: AD590JF
• Description: IC TEMP TRANSDUCER 2-TERM 2-CQFP
• Manufacturer: Analog Devices Inc

Specifications of AD590JF

• Sensing Temperature: -55°C ~ 150°C
• Output Type: Current
• Voltage - Supply: 4 V ~ 30 V
• Accuracy: ±5°C
• Package / Case: 2-CQFP
• Ic Output Type: Current
• Sensing Accuracy Range: ± 5°C
• Supply Voltage Range: 4V To 30V
• Sensor Case Style: Flatpack
• No. Of Pins: 2
• Termination Type: SMD
• Body Style: Flatpack
• Current, Supply: 298.2 μA (Typ.) @ 25 °C
• Current, Switching: 298.2 μA
• Function: Temperature
• Linearity: ± 0.3 °C
• Output: Current
• Primary Type: Temperature
• Range, Measurement: 150 °C
• Temperature Coefficient: 1 μA⁄K (Typ.)
• Temperature, Operating, Maximum: 150 °C
• Temperature, Operating, Minimum: -55 °C
• Temperature, Soldering: 300 °C
• Termination: Solder
• Voltage, Forward: 44 V
• Voltage, Output: 4 V (Min.)
• Voltage, Reverse: -20 V
• Voltage, Supply: 30 V
• 2-terminal Device: voltage in⁄current out
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Table 4. Thermal Resistance
Medium
Aluminum Block
Stirred Oil
Moving Air
Still Air
1
2
3
The time response of the AD590 to a step change in
temperature is determined by the thermal resistances and the
thermal capacities of the chip, C
about 0.04 Ws/°C for the AD590. C
medium, because it includes anything that is in direct thermal
contact with the case. The single time constant exponential
curve of Figure 15 is usually sufficient to describe the time
response, T (t). Table 4 shows the effective time constant, τ, for
several media.
τ is dependent upon velocity of oil; average of several velocities listed above.
Air velocity @ 9 ft/sec.
The time constant is defined as the time required to reach 63.2% of an
instantaneous temperature change.
With Heat Sink
Without Heat Sink
With Heat Sink
Without Heat Sink
2
3
H
30
42
45
115
191
480
(°C/Watt)
θ
JC
CH
+ θ
, and the case, C
C
CA
F
10
60
–
190
–
650
varies with the measured
H
0.6
1.4
5.0
13.5
108
60
C
. C
τ (sec)
CH
is
F
0.1
0.6
–
10.0
–
30
1
Rev. E | Page 9 of 16
T
T
INITIAL
FINAL
τ
Figure 15. Time Response Curve
T(t) = T
INITIAL
+ (T
TIME
FINAL
4τ
– T
INITIAL
)
×
(1 – e
–t/τ
)
AD590