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PDF ISL71590SEH Data sheet ( Hoja de datos )
| Número de pieza | ISL71590SEH | |
| Descripción | 2-Terminal Temperature Transducer | |
| Fabricantes | Intersil | |
| Logotipo |  |
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2-Terminal Temperature Transducer
ISL71590SEH
The ISL71590SEH is a temperature-to-current transducer
possessing two terminals. It has a high impedance current output
that allows it to be insensitive to voltage drops across long lines.
When provided a voltage between 4V and 33V, the device acts as
a constant current regulator that generates a current equal to
1µA/Kelvin (K).
The ISL71590SEH is specified over the -55°C to +125°C
temperature range and with ±1.7°C accuracy without the
need of additional circuitry, and also capable of operating up
to +150°C. With power requirements as low as 1.5mW (5V at
+25°C), it is an ideal choice for remote sensing applications as
any well-insulated twisted pair cable will allow for proper
operation. It can be used in several additional applications
including temperature compensation networks, flow rate
analysis, anemometry and biasing proportional to absolute
temperature.
The high output impedance (>10MΩ) leaves plenty of room for
variations in the power supply voltage. It is electrically durable
as it can withstand a forward operating voltage of 33V over the
full temperature range both under and without ion beam
radiation and a reverse voltage of -40V.
The ISL71590SEH is available in a 2 lead flatpack and die
forms.
Applications
• RF power amplifier bias compensation
• LCD bias compensation
• Laser diode bias compensation
• Sensor bias and linearization
• Data acquisition systems
Features
• 50krad(Si) low dose rate (ELDRS) shift . . . . . . . . . . . . . < 1°C
• Linear output current . . . . . . . . . . . . . . . . . . . . . . . . . . . 1µA/K
• Wide power supply input range. . . . . . . . . . . . . . . . 4V to 33V
• Low power consumption . . . . . . . . . . . . . . . . . . 1.5mW at 5V
• High output impedance provides excellent rejection to
variations in the supply line
• Additional linearization circuitry is not needed for operation
• Operating temperature range. . . . . . . . . . . . -55°C to +150°C
• QML qualified per MIL-PRF-38535 requirements
• Radiation environment
- SEL/SEB LETTH . . . . . . . . . . . . . . . . . . . 86.4 MeV•cm2/mg
- Total dose, high dose rate . . . . . . . . . . . . . . . . . 300krad(Si)
- Total dose, low dose rate . . . . . . . . . . . . . . . . . 50krad(Si)*
* Product capability established by initial characterization. The
EH version is acceptance tested on a wafer-by-wafer basis to
50krad(Si) at low dose rate.
• Electrically screened to SMD# 5962-13215
Related Literature
• AN1844, “ISL71590SEHXX Evaluation Board User’s Guide”
• AN1895, “Total Dose Radiation Report of the ISL71590SEH”
• AN1894, “SEE Radiation Report of the ISL71590SEH”
+
T
-
ISL71590
+4V to +33V
1kΩ
0.1%
VOUT = 1mV/K
FIGURE 1. TYPICAL APPLICATION
0.0
-0.2
-0.4
HDR
-0.6
-0.8 LDR
-1.0
-1.2 0
25 50 100 125 150 200 250 300
TOTAL DOSE (krad(Si))
FIGURE 2. IOUT SHIFT vs LOW/HIGH DOSE RATE RADIATION
September 26, 2013
FN8376.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2013. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
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1 page  
PARAMETER
Ambient Error (+25°C)
SYMBOL
E
ISL71590SEH
TABLE 1. BURN-IN AND LIFE TEST DELTA PARAMETERS
BURN-IN
END POINT
BURN-IN
DELTA
MIL-STD GROUP C
END POINT
±0.5
±0.25
±0.5
MIL-STD GROUP C
DELTA
±0.25
UNITS
°C
Typical Performance Curves Unless otherwise specified, VS = 5V, TA = +25°C.
450 298.7
298.6
400
298.5
350 298.4
298.3
300 298.2
250
200
-55 -35 -15 5
25 45 65 85 105 125 145 155
TEMPERATURE (°C)
FIGURE 5. OUTPUT CURRENT vs TEMPERATURE
298.1
298.0
297.9
4 6 8 10 12 14 16 18 20 22 24 26 28 30
SUPPLY VOLTAGE (V)
FIGURE 6. OUTPUT CURRENT vs VS VOLTAGE
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5-55 -35 -15 5 25 45 65 85 105 125 145 155
TEMPERATURE (°C)
FIGURE 7. TYPICAL ABSOLUTE ERROR WITHOUT EXTERNAL
CALIBRATION vs TEMPERATURE
500
+125°C
400
+25°C
300
-55°C
200
100
0.0
0
5 10 15 20 25 30 35 40 45
SUPPLY VOLTAGE (V)
FIGURE 8. VI CURVE OF VS vs IOUT OVER TEMPERATURE
50
5 September 26, 2013
FN8376.0
Free Datasheet http://www.datasheet4u.com/
5 Page 
ISL71590SEH
Typical Applications
The following section of the datasheet illustrates several
application ideas, touching on each with a short explanation.
There is an evaluation board ISL71590SEHEV1Z and
accompanying user guide “ISL71590SEH Evaluation Board
User’s Guide” that details 4 of the more fundamental
implementations of this device.
+5V
+
T
- ISL71590SEH
VOUT = 1mV/K
1kΩ
VS = +12V
++
TT
-1 - 2
+
T
-n
VOUT = (Io1+Io2 -- +Ion).R
n
R where n = number of ISL71590SEH
e.g. with 4 sensors and R = 250Ω Vout = 1mV/K)
FIGURE 30. AVERAGE TEMPERATURE SENSING SCHEME
The sum of the ISL71590SEH currents appears across R, which
represents the average temperature in the sensor array (See
Figure 30).
FIGURE 27.
423
298.2
218
218K
(-55°C)
298.2K
(+25°C)
423K
(+150°C)
TEMPERATURE
FIGURE 28. SIMPLE CONNECTION. OUTPUT IS PROPORTIONAL TO
ABSOLUTE TEMPERATURE
VS = +14V
+
T
-
+
T
-
+
T
-
1kΩ
0.1%
ISL71590SEH
Maximum number = (VSmin -VOUTmax)/4V
VOUT = 1mV/K
FIGURE 29. LOWEST TEMPERATURE SENSING SCHEME.
OUTPUTCURRENT IS THAT OF THE “COLDEST” SENSOR
+15V
+
-
RT
0.1%
HEATER
ELEMENT
ISL71590SEH
IS139
RB
37
R1 2 1
4
C R2
VZERO
R3
ISL71090SEH12
1.25V
FIGURE 31. SINGLE SETPOINT TEMPERATURE CONTROLLER
In Figure 31, the ISL71590SEH produces a temperature
dependent voltage across RT (C is for filtering noise). Setting R2
produces a scale-zero voltage. For the celsius scale, make
RT = 1kΩ and VZERO = 0.273V. For Fahrenheit, RT = 1.8kΩ and
VZERO = 0.460V.
500µA
I
++
--
FIGURE 32. SIMPLEST THERMOMETER
Figure 32, illustrates the simplest thermometer displaying
current output directly in Kelvin. using the ISL71590SEH, sensor
output is within ±1.7K over the entire range.
11 September 26, 2013
FN8376.0
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
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