Allicdata Part #: | AD590LH/883B-ND |
Manufacturer Part#: |
AD590LH/883B |
Price: | $ 0.00 |
Product Category: | Sensors, Transducers |
Manufacturer: | Analog Devices Inc. |
Short Description: | IC TEMP TRANSDUCR 2-TERM TO-52-3Temperature Sensor... |
More Detail: | N/A |
DataSheet: | AD590LH/883B Datasheet/PDF |
Quantity: | 1322 |
Series: | AD590 |
Packaging: | Tube |
Part Status: | Active |
Sensor Type: | Analog, Local |
Sensing Temperature - Local: | -55°C ~ 150°C |
Sensing Temperature - Remote: | -- |
Output Type: | Analog Current |
Voltage - Supply: | 4 V ~ 30 V |
Resolution: | -- |
Features: | -- |
Accuracy - Highest (Lowest): | ±1°C |
Test Condition: | 25°C |
Operating Temperature: | -55°C ~ 150°C |
Mounting Type: | Through Hole |
Package / Case: | TO-206AC, TO-52-3 Metal Can |
Supplier Device Package: | TO-52-3 |
Base Part Number: | AD590 |
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1. DESCRIPTION
The AD590LH/883B is a 2-terminal integrated circuit temperature transducer that produces an output current proportional to absolute temperature. For supply voltages between 4 V and 30 V, the device acts as a high impedance, constant current regulator passing 1 μA/K. Laser trimming of the chip’s thin-film resistors is used to calibrate the device to 298.2 μA output at 298.2 K (25°C). The AD590LH/883B should be used in any temperature-sensing application below 150°C in which conventional electrical temperature sensors are currently employed. The inherent low cost of a monolithic integrated circuit combined with the elimination of support circuitry makes the AD590LH/883B an attractive alternative for many temperature measurement situations. Linearization circuitry, precision voltage amplifiers, resistance measuring circuitry, and cold junction compensation are not needed in applying the AD590LH/883B. In addition to temperature measurement, applications include temperature compensation or correction of discrete components, biasing proportional to absolute temperature, flow rate measurement, level detection of fluids and anemometry. The AD590 is available in die form, making it suitable for hybrid circuits and fast temperature measurements in protected environments. The AD590 is particularly useful in remote sensing applications. The device is insensitive to voltage drops over long lines due to its high impedance current output. Any well-insulated twisted pair is sufficient for operation at hundreds of feet from the receiving circuitry. The output characteristics also make the AD590 easy to multiplex: the current can be switched by a CMOS multiplexer, or the supply voltage can be switched by a logic gate output.
2. FEATURES
1. Linear current output: 1 μA/K
2. Wide temperature range: −55°C to +150°C
3. Probe-compatible ceramic sensor package
4. 2-terminal device: voltage in/current out
5. Laser trimmed to ±0.5°C calibration accuracy (AD590M)
6. Excellent linearity: ±0.3°C over full range (AD590M)
7. Wide power supply range: 4 V to 30 V
8. Sensor isolation from case
9. Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52, 8-lead SOIC, and die form
3. PRODUCT HIGHLIGHTS
1. The AD590 is a calibrated, 2-terminal temperature sensor requiring only a dc voltage supply. Costly transmitters, filters, lead wire compensation, and linearization circuits are all unnecessary in applying the device.
2. State-of-the-art laser trimming at the wafer level in conjunction with extensive final testing ensures that AD590 units are easily interchangeable.
3. Superior interface rejection occurs because the output is a current rather than a voltage. In addition, power requirements are low (1.5 mW @ 5 V @ 25°C). These features make the AD590 easy to apply as a remote sensor.
4. The high output impedance (>10 MΩ) provides excellent rejection of supply voltage drift. For instance, changing the power supply from 5 V to 10 V results in only a 1 μA maximum current change, or 1°C equivalent error.
5. The AD590 is electrically durable: it withstands a forward voltage of up to 44 V and a reverse voltage of 20 V. Therefore, supply irregularities or pin reversal does not damage the device.
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