The AD8494/AD8495/AD8496/AD8497 are precision instrumentation amplifiers with thermocouple cold junction compensators on an integrated circuit. They produce a high level (5 mV/°C) output directly from a thermocouple signal by combining an ice point reference with a precalibrated amplifier. They can be used as standalone thermometers or as switched output setpoint controllers using either a fixed or remote setpoint control.The AD8494/AD8495/AD8496/AD8497 can be powered from a single-ended supply (less than 3 V) and can measure temperatures below 0°C by offsetting the reference input. To minimize self-heating, an unloaded AD849x typically operates with a total supply current of 180 μA, but it is also capable of delivering in excess of ±5 mA to a load.The AD8494 and AD8496 are precalibrated by laser wafer trimming to match the characteristics of J type (iron-constantan) thermocouples; the AD8495 and AD8497 are laser trimmed to match the characteristics of K type (chromel-alumel) thermo-couples. See Table 1 on the data sheet for the optimized ambient temperature range of each part.The AD8494/AD8495/AD8496/AD8497 allow a wide variety of supply voltages. With a 5 V single supply, the 5 mV/°C output allows the devices to cover nearly 1000 degrees of a thermo-couple’s temperature range.The AD8494/AD8495/AD8496/AD8497 work with 3 V supplies, allowing them to interface directly to lower supply ADCs. They can also work with supplies as large as 36 V in industrial systems that require a wide common-mode input range.Product Highlights Complete, precision laser wafer trimmed thermocouple signal conditioning system in a single IC package. Flexible pinout provides for operation as a setpoint controller or as a standalone Celsius thermometer. Rugged inputs withstand 4 kV ESD and provide over-voltage protection (OVP) up to VS ± 25 V. Differential inputs reject common-mode noise on the thermocouple leads. Reference pin voltage can be offset to measure 0°C on single supplies. Available in a small, 8-lead MSOP that is fully RoHS compliant. Applications J type thermocouple temperature measurement Setpoint controller Celsius thermometer Universal cold junction compensator White goods (oven, stove top) temperature measurements Exhaust gas temperature sensing Catalytic converter temperature sensing div#landing_page_sec ul { padding:0 0 15px 10px; margin:0px; } div#landing_page_sec li { padding:3px 0 2px 20px; margin:0px; list-style:none; background:url(/static/imported-files/embedded_html/images/li_img.gif) no-repeat 7px 9px; display:block; color:#000000; font-family: Arial, Helvetica, sans-serif; }

Board Mount Temperature Sensors TEMP TRANSDUCER IC

AD590 - 2-Terminal IC Temperature Transducer

Features:

• Linear current output: 1 µA/K
• Wide temperature range: -55°C to +150°C
• Probe compatible ceramic sensor package
• 2-terminal device: voltage in/current out
• Laser trimmed to ±0.5°C calibration accuracy (AD590M)
• Excellent linearity: ±0.3°C over full range (AD590M)
• Wide power supply range: 4 V to 30 V
• Sensor isolation from case
• Available in 2-lead FLATPACK, 4-lead LFCSP, 3-pin TO-52, 8-lead SOIC, and die form

Additional Details:

The AD590 is a 2-terminal integrated circuit temperature sensor that generates an output current directly proportional to absolute temperature. With supply voltages ranging from 4 V to 30 V, it functions as a high-impedance, constant-current source, delivering 1 μA per Kelvin. The chip's thin-film resistors are laser-trimmed to ensure a precise output of 298.2 μA at 298.2 K (25°C).

The AD590 is ideal for temperature-sensing applications below 150°C, offering a cost-effective alternative to traditional electrical temperature sensors. Its monolithic design eliminates the need for additional support circuits like linearization, precision amplifiers, resistance measurement, or cold junction compensation.

Beyond temperature measurement, the AD590 is suitable for applications such as temperature compensation, biasing proportional to absolute temperature, flow rate measurement, fluid level detection, and anemometry. Available in die form, it is well-suited for hybrid circuits and rapid temperature measurement in protected environments.

The AD590 excels in remote sensing applications, thanks to its high-impedance current output, which minimizes the effect of voltage drops over long distances. A well-insulated twisted pair can transmit data over hundreds of feet to the receiving circuitry. Additionally, the AD590 is easy to multiplex, as its current can be switched using a CMOS multiplexer, or the supply voltage can be controlled by a logic gate output.

 

10-Bit Digital Temperature Sensor (AD7416) and Four Single-Channel ADCs

Thermostats Digital Thermometer and Memory

Thermostats

SPI-/I2C-Compatible, 10-Bit Digital Temperature Sensor and 8-Channel ADC

AMP THERMOCOUPLE TYPE K, 3°C , 14DIP; IC Output Type: Voltage; Sensing Accuracy Range: ± 3°C; Sensing Temperature Min: -55°C; Sensing Temperature Max: +125°C; Sensor Case Style: DIP; No. of Pins: 14Pins; Supply Voltage Min: 5V; Supply Voltage Max: 15V; Product Range: AD595 Series; Automotive Qualification Standard: -; MSL: -; SVHC: No SVHC (07-Jul-2017); Amplifier Type: Thermocouple; Bandwidth: 15kHz; Base Number: 595; Device Marking: AD595AQ; IC Generic Number: 595; Input Offset Voltage Max: 11µV; Logic Function Number: 595; No. of Amplifiers: 1Amplifiers; Operating Temperature Max: 125°C; Operating Temperature Range: -55°C to +125°C; Output Current: 5mA; Output Voltage: 13V; Output Voltage per °C: 10mV/°C; Sensor / Transducer Type: Temperature; Supply Current: 160µA; Supply Voltage Range: 5V to ± 15V; Temperature Sensing Range: -55°C to +125°C; Termination Type: Through Hole

TEMPERATURE SENSOR;

The ADT7310 is a high accuracy digital temperature sensor in a narrow SOIC package. It contains a band gap temperature reference and a 13-bit ADC to monitor and digitize the temperature to a 0.0625°C resolution. The ADC resolution, by default, is set to 13 bits (0.0625 °C). This can be changed to 16 bits (0.0078 °C) by setting Bit 7 in the configuration register (Register Address 0x01).The ADT7310 is guaranteed to operate over supply voltages from 2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically 210 μA. The ADT7310 has a shutdown mode that powers down the device and offers a shutdown current of typically 2 μA. The ADT7310 is rated for operation over the −55°C to +150°C temperature range.The CT pin is an open-drain output that becomes active when the temperature exceeds a programmable critical temperature limit. The default critical temperature limit is 147°C. The INT pin is also an open-drain output that becomes active when the temperature exceeds a programmable limit. The INT and CT pins can operate in either comparator or interrupt mode.APPLICATIONS Medical equipment Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power system monitors Hand-held applications

The ADT7410 is a high accuracy digital temperature sensor in anarrow SOIC package. It contains a band gap temperature referenceand a 13-bit ADC to monitor and digitize the temperature to a0.0625°C resolution. The ADC resolution, by default, is set to13 bits (0.0625°C). This can be changed to 16 bits (0.0078°C) bysetting Bit 7 in the configuration register (Register Address 0x03).The ADT7410 is guaranteed to operate over supply voltages from2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is typically210 μA. The ADT7410 has a shutdown mode that powersdown the device and offers a shutdown current of typically 2 μA.The ADT7410 is rated for operation over the −55°C to +150°Ctemperature range.Pin A0 and Pin A1 are available for address selection, giving theADT7410 four possible I2C addresses. The CT pin is an open-drainoutput that becomes active when the temperature exceedsa programmable critical temperature limit. The default criticaltemperature limit is 147°C. The INT pin is also an open-drainoutput that becomes active when the temperature exceeds aprogrammable limit. The INT and CT pins can operate in eithercomparator or interrupt mode.Applications Medical equipment Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power system monitors Hand-held applications