The TMP03/TMP04 are monolithic temperature detectors thatgenerate a modulated serial digital output that varies in directproportion to the temperature of the device. An onboard sensorgenerates a voltage precisely proportional to absolute temperaturewhich is compared to an internal voltage reference andinput to a precision digital modulator. The ratiometric encodingformat of the serial digital output is independent of the clock drifterrors common to most serial modulation techniques such asvoltage-to-frequency converters. Overall accuracy is ±1.5°C(typical) from –25°C to +100°C, with excellent transducer linearity.The digital output of the TMP04 is CMOS/TTLcompatible, and is easily interfaced to the serial inputs of mostpopular microprocessors. The open-collector output of theTMP03 is capable of sinking 5 mA. The TMP03 is best suitedfor systems requiring isolated circuits utilizing optocouplers orisolation transformers.The TMP03 and TMP04 are specified for operation at supplyvoltages from 4.5 V to 7 V. Operating from 5 V, supply current(unloaded) is less than 1.3 mA.The TMP03/TMP04 are rated for operation over the –40°C to+100°C temperature range in the low cost TO-92, SO-8, andTSSOP-8 surface mount packages. Operation extends to 150°Cwith reduced accuracy.Applications Isolated sensors Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power system monitors

The AD22105 is a solid state thermostatic switch. Requiring only one external programming resistor, the AD22105 can be set to switch accurately at any temperature in the wide operating range of -40°C to +150°C. Using a novel circuit architecture, the AD22105 asserts an open collector output when the ambient temperature exceeds the user-programmed setpoint temperature. The AD22105 has approximately 4°C of hysteresis which prevents rapid thermal on/off cycling.The AD22105 is designed to operate on a single power supply voltage from +2.7 V to +7.0 V facilitating operation in battery powered applications as well as in industrial control systems. Because of low power dissipation (230 µW @ 3.3 V), self-heating errors are minimized and battery life is maximized.An optional internal 200 k(ohm) pull-up resistor is included to facilitate driving light loads such as CMOS inputs.Alternatively, a low power LED indicator may be driven directly. APPLICATIONS Industrial process control Thermal control systems CPU monitoring Computer thermal management circuits Fan control Handheld/portable electronic equipment

Thermostats Programmable Resolution 1-Wire Digital Thermometer

TEMP SENSOR 11BIT +/-4DEGC SOT23-5; IC Output Type:Open Drain; Sensing Accuracy Range:± 4°C; Sensing Temperature Min:-55°C; Sensing Temperature Max:125°C; Sensor Case Style:SOT-23; No. of Pins:5Pins; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Packaging:Each; Product Range:ADT6501 Series; Automotive Qualification Standard:-; MSL:MSL 1 - Unlimited; SVHC:No SVHC (20-Jun-2016)

TEMPERATURE SENSOR;

Board Mount Temperature Sensors

Board Mount Temperature Sensors Voltage Output Temperature Sensor with Signal Conditioning

SPI-/I2C-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC Features: 10-bit temperature-to-digital converter  10-bit 8-channel ADC  DC input bandwidth  Input range: 0 V to 2.25 V and 0 V to VDD Temperature range: −40°C to +120°C  Temperature sensor accuracy of ±0.5°C  Supply range: 2.7 V to 5.5 V  Power-down current : <10 μA Internal 2.25 VREF option Double-buffered input logic  I2C, SPI, QSPI™, MICROWIRE™, and DSP compatible 4-wire serial interface  SMBus packet error checking (PEC) compatible 16-lead QSOP

The AD590 is a 2-terminal integrated circuit temperature trans-ducer 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 AD590 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 AD590 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 AD590.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.PRODUCT HIGHLIGHTS The AD590 is a calibrated, 2-terminal temperature sensor requiring only a dc voltage supply (4 V to 30 V). Costly transmitters, filters, lead wire compensation, and linearization circuits are all unnecessary in applying the device. State-of-the-art laser trimming at the wafer level in conjunction with extensive final testing ensures that AD590 units are easily interchangeable. 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. 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. 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.

TEMPERATURE SENSOR;